From 572ccdab50bb3ae9096d6947c2e78a7107acf2dd Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Sat, 14 Apr 2018 10:51:05 -0700 Subject: scsi: target: target_core_user.[ch]: convert comments into DOC: Make documentation on target-supported userspace-I/O design be usable by kernel-doc by using "DOC:". This is used in the driver-api Documentation chapter. Signed-off-by: Randy Dunlap To: "Nicholas A. Bellinger" Cc: linux-scsi@vger.kernel.org Cc: target-devel@vger.kernel.org Cc: linux-doc@vger.kernel.org Cc: "James E.J. Bottomley" Cc: "Martin K. Petersen" Cc: Jonathan Corbet Signed-off-by: Martin K. Petersen --- include/uapi/linux/target_core_user.h | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) (limited to 'include/uapi/linux') diff --git a/include/uapi/linux/target_core_user.h b/include/uapi/linux/target_core_user.h index 0be80f72646b..6e299349b158 100644 --- a/include/uapi/linux/target_core_user.h +++ b/include/uapi/linux/target_core_user.h @@ -9,21 +9,22 @@ #define TCMU_VERSION "2.0" -/* +/** + * DOC: Ring Design * Ring Design * ----------- * * The mmaped area is divided into three parts: - * 1) The mailbox (struct tcmu_mailbox, below) - * 2) The command ring - * 3) Everything beyond the command ring (data) + * 1) The mailbox (struct tcmu_mailbox, below); + * 2) The command ring; + * 3) Everything beyond the command ring (data). * * The mailbox tells userspace the offset of the command ring from the * start of the shared memory region, and how big the command ring is. * * The kernel passes SCSI commands to userspace by putting a struct * tcmu_cmd_entry in the ring, updating mailbox->cmd_head, and poking - * userspace via uio's interrupt mechanism. + * userspace via UIO's interrupt mechanism. * * tcmu_cmd_entry contains a header. If the header type is PAD, * userspace should skip hdr->length bytes (mod cmdr_size) to find the -- cgit v1.2.3 From c1aea9196ef4f6b64a8ef7e62a933f7e4164aed9 Mon Sep 17 00:00:00 2001 From: Vitaly Kuznetsov Date: Wed, 16 May 2018 17:21:31 +0200 Subject: KVM: x86: hyperv: declare KVM_CAP_HYPERV_TLBFLUSH capability MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit We need a new capability to indicate support for the newly added HvFlushVirtualAddress{List,Space}{,Ex} hypercalls. Upon seeing this capability, userspace is supposed to announce PV TLB flush features by setting the appropriate CPUID bits (if needed). Signed-off-by: Vitaly Kuznetsov Signed-off-by: Radim Krčmář --- include/uapi/linux/kvm.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/uapi/linux') diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h index b02c41e53d56..b252ceb3965c 100644 --- a/include/uapi/linux/kvm.h +++ b/include/uapi/linux/kvm.h @@ -948,6 +948,7 @@ struct kvm_ppc_resize_hpt { #define KVM_CAP_S390_BPB 152 #define KVM_CAP_GET_MSR_FEATURES 153 #define KVM_CAP_HYPERV_EVENTFD 154 +#define KVM_CAP_HYPERV_TLBFLUSH 155 #ifdef KVM_CAP_IRQ_ROUTING -- cgit v1.2.3 From 136200f4fd365a0a9c549893c9641f6eeff53f22 Mon Sep 17 00:00:00 2001 From: Suman Anna Date: Thu, 31 May 2018 12:11:03 -0500 Subject: rpmsg: char: Switch to SPDX license identifier Use the appropriate SPDX license identifier in the rpmsg char driver source file and drop the previous boilerplate license text. The uapi header file already had the SPDX license identifier added as part of a mass update but the license text removal was deferred for later, and this patch drops the same. Signed-off-by: Suman Anna Signed-off-by: Bjorn Andersson --- include/uapi/linux/rpmsg.h | 9 --------- 1 file changed, 9 deletions(-) (limited to 'include/uapi/linux') diff --git a/include/uapi/linux/rpmsg.h b/include/uapi/linux/rpmsg.h index 225eb38705dc..e14c6dab4223 100644 --- a/include/uapi/linux/rpmsg.h +++ b/include/uapi/linux/rpmsg.h @@ -1,15 +1,6 @@ /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ /* * Copyright (c) 2016, Linaro Ltd. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 and - * only version 2 as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. */ #ifndef _UAPI_RPMSG_H_ -- cgit v1.2.3 From 05e98465e08a58d7f8f577281f0c98c71c624c4b Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Fri, 1 Jun 2018 20:36:30 +0200 Subject: ncpfs: remove uapi .h files Now that ncpfs is removed from the tree, there is no need to keep the uapi header files around as no one uses them, and it is not a feature that the kernel supports anymore. Signed-off-by: Greg Kroah-Hartman --- include/uapi/linux/ncp.h | 202 ----------------------------------------- include/uapi/linux/ncp_fs.h | 147 ------------------------------ include/uapi/linux/ncp_mount.h | 72 --------------- include/uapi/linux/ncp_no.h | 20 ---- 4 files changed, 441 deletions(-) delete mode 100644 include/uapi/linux/ncp.h delete mode 100644 include/uapi/linux/ncp_fs.h delete mode 100644 include/uapi/linux/ncp_mount.h delete mode 100644 include/uapi/linux/ncp_no.h (limited to 'include/uapi/linux') diff --git a/include/uapi/linux/ncp.h b/include/uapi/linux/ncp.h deleted file mode 100644 index ca6f3d42c88f..000000000000 --- a/include/uapi/linux/ncp.h +++ /dev/null @@ -1,202 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ -/* - * ncp.h - * - * Copyright (C) 1995 by Volker Lendecke - * Modified for sparc by J.F. Chadima - * Modified for __constant_ntoh by Frank A. Vorstenbosch - * - */ - -#ifndef _LINUX_NCP_H -#define _LINUX_NCP_H - -#include - -#define NCP_PTYPE (0x11) -#define NCP_PORT (0x0451) - -#define NCP_ALLOC_SLOT_REQUEST (0x1111) -#define NCP_REQUEST (0x2222) -#define NCP_DEALLOC_SLOT_REQUEST (0x5555) - -struct ncp_request_header { - __u16 type; - __u8 sequence; - __u8 conn_low; - __u8 task; - __u8 conn_high; - __u8 function; - __u8 data[0]; -} __attribute__((packed)); - -#define NCP_REPLY (0x3333) -#define NCP_WATCHDOG (0x3E3E) -#define NCP_POSITIVE_ACK (0x9999) - -struct ncp_reply_header { - __u16 type; - __u8 sequence; - __u8 conn_low; - __u8 task; - __u8 conn_high; - __u8 completion_code; - __u8 connection_state; - __u8 data[0]; -} __attribute__((packed)); - -#define NCP_VOLNAME_LEN (16) -#define NCP_NUMBER_OF_VOLUMES (256) -struct ncp_volume_info { - __u32 total_blocks; - __u32 free_blocks; - __u32 purgeable_blocks; - __u32 not_yet_purgeable_blocks; - __u32 total_dir_entries; - __u32 available_dir_entries; - __u8 sectors_per_block; - char volume_name[NCP_VOLNAME_LEN + 1]; -}; - -#define AR_READ (cpu_to_le16(1)) -#define AR_WRITE (cpu_to_le16(2)) -#define AR_EXCLUSIVE (cpu_to_le16(0x20)) - -#define NCP_FILE_ID_LEN 6 - -/* Defines for Name Spaces */ -#define NW_NS_DOS 0 -#define NW_NS_MAC 1 -#define NW_NS_NFS 2 -#define NW_NS_FTAM 3 -#define NW_NS_OS2 4 - -/* Defines for ReturnInformationMask */ -#define RIM_NAME (cpu_to_le32(1)) -#define RIM_SPACE_ALLOCATED (cpu_to_le32(2)) -#define RIM_ATTRIBUTES (cpu_to_le32(4)) -#define RIM_DATA_SIZE (cpu_to_le32(8)) -#define RIM_TOTAL_SIZE (cpu_to_le32(0x10)) -#define RIM_EXT_ATTR_INFO (cpu_to_le32(0x20)) -#define RIM_ARCHIVE (cpu_to_le32(0x40)) -#define RIM_MODIFY (cpu_to_le32(0x80)) -#define RIM_CREATION (cpu_to_le32(0x100)) -#define RIM_OWNING_NAMESPACE (cpu_to_le32(0x200)) -#define RIM_DIRECTORY (cpu_to_le32(0x400)) -#define RIM_RIGHTS (cpu_to_le32(0x800)) -#define RIM_ALL (cpu_to_le32(0xFFF)) -#define RIM_COMPRESSED_INFO (cpu_to_le32(0x80000000)) - -/* Defines for NSInfoBitMask */ -#define NSIBM_NFS_NAME 0x0001 -#define NSIBM_NFS_MODE 0x0002 -#define NSIBM_NFS_GID 0x0004 -#define NSIBM_NFS_NLINKS 0x0008 -#define NSIBM_NFS_RDEV 0x0010 -#define NSIBM_NFS_LINK 0x0020 -#define NSIBM_NFS_CREATED 0x0040 -#define NSIBM_NFS_UID 0x0080 -#define NSIBM_NFS_ACSFLAG 0x0100 -#define NSIBM_NFS_MYFLAG 0x0200 - -/* open/create modes */ -#define OC_MODE_OPEN 0x01 -#define OC_MODE_TRUNCATE 0x02 -#define OC_MODE_REPLACE 0x02 -#define OC_MODE_CREATE 0x08 - -/* open/create results */ -#define OC_ACTION_NONE 0x00 -#define OC_ACTION_OPEN 0x01 -#define OC_ACTION_CREATE 0x02 -#define OC_ACTION_TRUNCATE 0x04 -#define OC_ACTION_REPLACE 0x04 - -/* access rights attributes */ -#ifndef AR_READ_ONLY -#define AR_READ_ONLY 0x0001 -#define AR_WRITE_ONLY 0x0002 -#define AR_DENY_READ 0x0004 -#define AR_DENY_WRITE 0x0008 -#define AR_COMPATIBILITY 0x0010 -#define AR_WRITE_THROUGH 0x0040 -#define AR_OPEN_COMPRESSED 0x0100 -#endif - -struct nw_nfs_info { - __u32 mode; - __u32 rdev; -}; - -struct nw_info_struct { - __u32 spaceAlloc; - __le32 attributes; - __u16 flags; - __le32 dataStreamSize; - __le32 totalStreamSize; - __u16 numberOfStreams; - __le16 creationTime; - __le16 creationDate; - __u32 creatorID; - __le16 modifyTime; - __le16 modifyDate; - __u32 modifierID; - __le16 lastAccessDate; - __u16 archiveTime; - __u16 archiveDate; - __u32 archiverID; - __u16 inheritedRightsMask; - __le32 dirEntNum; - __le32 DosDirNum; - __u32 volNumber; - __u32 EADataSize; - __u32 EAKeyCount; - __u32 EAKeySize; - __u32 NSCreator; - __u8 nameLen; - __u8 entryName[256]; - /* libncp may depend on there being nothing after entryName */ -#ifdef __KERNEL__ - struct nw_nfs_info nfs; -#endif -} __attribute__((packed)); - -/* modify mask - use with MODIFY_DOS_INFO structure */ -#define DM_ATTRIBUTES (cpu_to_le32(0x02)) -#define DM_CREATE_DATE (cpu_to_le32(0x04)) -#define DM_CREATE_TIME (cpu_to_le32(0x08)) -#define DM_CREATOR_ID (cpu_to_le32(0x10)) -#define DM_ARCHIVE_DATE (cpu_to_le32(0x20)) -#define DM_ARCHIVE_TIME (cpu_to_le32(0x40)) -#define DM_ARCHIVER_ID (cpu_to_le32(0x80)) -#define DM_MODIFY_DATE (cpu_to_le32(0x0100)) -#define DM_MODIFY_TIME (cpu_to_le32(0x0200)) -#define DM_MODIFIER_ID (cpu_to_le32(0x0400)) -#define DM_LAST_ACCESS_DATE (cpu_to_le32(0x0800)) -#define DM_INHERITED_RIGHTS_MASK (cpu_to_le32(0x1000)) -#define DM_MAXIMUM_SPACE (cpu_to_le32(0x2000)) - -struct nw_modify_dos_info { - __le32 attributes; - __le16 creationDate; - __le16 creationTime; - __u32 creatorID; - __le16 modifyDate; - __le16 modifyTime; - __u32 modifierID; - __u16 archiveDate; - __u16 archiveTime; - __u32 archiverID; - __le16 lastAccessDate; - __u16 inheritanceGrantMask; - __u16 inheritanceRevokeMask; - __u32 maximumSpace; -} __attribute__((packed)); - -struct nw_search_sequence { - __u8 volNumber; - __u32 dirBase; - __u32 sequence; -} __attribute__((packed)); - -#endif /* _LINUX_NCP_H */ diff --git a/include/uapi/linux/ncp_fs.h b/include/uapi/linux/ncp_fs.h deleted file mode 100644 index e76a44229d2f..000000000000 --- a/include/uapi/linux/ncp_fs.h +++ /dev/null @@ -1,147 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ -/* - * ncp_fs.h - * - * Copyright (C) 1995, 1996 by Volker Lendecke - * - */ - -#ifndef _LINUX_NCP_FS_H -#define _LINUX_NCP_FS_H - -#include -#include -#include -#include - -#include -#include - -/* - * ioctl commands - */ - -struct ncp_ioctl_request { - unsigned int function; - unsigned int size; - char __user *data; -}; - -struct ncp_fs_info { - int version; - struct sockaddr_ipx addr; - __kernel_uid_t mounted_uid; - int connection; /* Connection number the server assigned us */ - int buffer_size; /* The negotiated buffer size, to be - used for read/write requests! */ - - int volume_number; - __le32 directory_id; -}; - -struct ncp_fs_info_v2 { - int version; - unsigned long mounted_uid; - unsigned int connection; - unsigned int buffer_size; - - unsigned int volume_number; - __le32 directory_id; - - __u32 dummy1; - __u32 dummy2; - __u32 dummy3; -}; - -struct ncp_sign_init -{ - char sign_root[8]; - char sign_last[16]; -}; - -struct ncp_lock_ioctl -{ -#define NCP_LOCK_LOG 0 -#define NCP_LOCK_SH 1 -#define NCP_LOCK_EX 2 -#define NCP_LOCK_CLEAR 256 - int cmd; - int origin; - unsigned int offset; - unsigned int length; -#define NCP_LOCK_DEFAULT_TIMEOUT 18 -#define NCP_LOCK_MAX_TIMEOUT 180 - int timeout; -}; - -struct ncp_setroot_ioctl -{ - int volNumber; - int namespace; - __le32 dirEntNum; -}; - -struct ncp_objectname_ioctl -{ -#define NCP_AUTH_NONE 0x00 -#define NCP_AUTH_BIND 0x31 -#define NCP_AUTH_NDS 0x32 - int auth_type; - size_t object_name_len; - void __user * object_name; /* a userspace data, in most cases user name */ -}; - -struct ncp_privatedata_ioctl -{ - size_t len; - void __user * data; /* ~1000 for NDS */ -}; - -/* NLS charsets by ioctl */ -#define NCP_IOCSNAME_LEN 20 -struct ncp_nls_ioctl -{ - unsigned char codepage[NCP_IOCSNAME_LEN+1]; - unsigned char iocharset[NCP_IOCSNAME_LEN+1]; -}; - -#define NCP_IOC_NCPREQUEST _IOR('n', 1, struct ncp_ioctl_request) -#define NCP_IOC_GETMOUNTUID _IOW('n', 2, __kernel_old_uid_t) -#define NCP_IOC_GETMOUNTUID2 _IOW('n', 2, unsigned long) - -#define NCP_IOC_CONN_LOGGED_IN _IO('n', 3) - -#define NCP_GET_FS_INFO_VERSION (1) -#define NCP_IOC_GET_FS_INFO _IOWR('n', 4, struct ncp_fs_info) -#define NCP_GET_FS_INFO_VERSION_V2 (2) -#define NCP_IOC_GET_FS_INFO_V2 _IOWR('n', 4, struct ncp_fs_info_v2) - -#define NCP_IOC_SIGN_INIT _IOR('n', 5, struct ncp_sign_init) -#define NCP_IOC_SIGN_WANTED _IOR('n', 6, int) -#define NCP_IOC_SET_SIGN_WANTED _IOW('n', 6, int) - -#define NCP_IOC_LOCKUNLOCK _IOR('n', 7, struct ncp_lock_ioctl) - -#define NCP_IOC_GETROOT _IOW('n', 8, struct ncp_setroot_ioctl) -#define NCP_IOC_SETROOT _IOR('n', 8, struct ncp_setroot_ioctl) - -#define NCP_IOC_GETOBJECTNAME _IOWR('n', 9, struct ncp_objectname_ioctl) -#define NCP_IOC_SETOBJECTNAME _IOR('n', 9, struct ncp_objectname_ioctl) -#define NCP_IOC_GETPRIVATEDATA _IOWR('n', 10, struct ncp_privatedata_ioctl) -#define NCP_IOC_SETPRIVATEDATA _IOR('n', 10, struct ncp_privatedata_ioctl) - -#define NCP_IOC_GETCHARSETS _IOWR('n', 11, struct ncp_nls_ioctl) -#define NCP_IOC_SETCHARSETS _IOR('n', 11, struct ncp_nls_ioctl) - -#define NCP_IOC_GETDENTRYTTL _IOW('n', 12, __u32) -#define NCP_IOC_SETDENTRYTTL _IOR('n', 12, __u32) - -/* - * The packet size to allocate. One page should be enough. - */ -#define NCP_PACKET_SIZE 4070 - -#define NCP_MAXPATHLEN 255 -#define NCP_MAXNAMELEN 14 - -#endif /* _LINUX_NCP_FS_H */ diff --git a/include/uapi/linux/ncp_mount.h b/include/uapi/linux/ncp_mount.h deleted file mode 100644 index 9bdbcd68c329..000000000000 --- a/include/uapi/linux/ncp_mount.h +++ /dev/null @@ -1,72 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ -/* - * ncp_mount.h - * - * Copyright (C) 1995, 1996 by Volker Lendecke - * - */ - -#ifndef _LINUX_NCP_MOUNT_H -#define _LINUX_NCP_MOUNT_H - -#include -#include - -#define NCP_MOUNT_VERSION 3 /* Binary */ - -/* Values for flags */ -#define NCP_MOUNT_SOFT 0x0001 -#define NCP_MOUNT_INTR 0x0002 -#define NCP_MOUNT_STRONG 0x0004 /* enable delete/rename of r/o files */ -#define NCP_MOUNT_NO_OS2 0x0008 /* do not use OS/2 (LONG) namespace */ -#define NCP_MOUNT_NO_NFS 0x0010 /* do not use NFS namespace */ -#define NCP_MOUNT_EXTRAS 0x0020 -#define NCP_MOUNT_SYMLINKS 0x0040 /* enable symlinks */ -#define NCP_MOUNT_NFS_EXTRAS 0x0080 /* Enable use of NFS NS meta-info */ - -struct ncp_mount_data { - int version; - unsigned int ncp_fd; /* The socket to the ncp port */ - __kernel_uid_t mounted_uid; /* Who may umount() this filesystem? */ - __kernel_pid_t wdog_pid; /* Who cares for our watchdog packets? */ - - unsigned char mounted_vol[NCP_VOLNAME_LEN + 1]; - unsigned int time_out; /* How long should I wait after - sending a NCP request? */ - unsigned int retry_count; /* And how often should I retry? */ - unsigned int flags; - - __kernel_uid_t uid; - __kernel_gid_t gid; - __kernel_mode_t file_mode; - __kernel_mode_t dir_mode; -}; - -#define NCP_MOUNT_VERSION_V4 (4) /* Binary or text */ - -struct ncp_mount_data_v4 { - int version; - unsigned long flags; /* NCP_MOUNT_* flags */ - /* MIPS uses long __kernel_uid_t, but... */ - /* we neever pass -1, so it is safe */ - unsigned long mounted_uid; /* Who may umount() this filesystem? */ - /* MIPS uses long __kernel_pid_t */ - long wdog_pid; /* Who cares for our watchdog packets? */ - - unsigned int ncp_fd; /* The socket to the ncp port */ - unsigned int time_out; /* How long should I wait after - sending a NCP request? */ - unsigned int retry_count; /* And how often should I retry? */ - - /* MIPS uses long __kernel_uid_t... */ - /* we never pass -1, so it is safe */ - unsigned long uid; - unsigned long gid; - /* MIPS uses unsigned long __kernel_mode_t */ - unsigned long file_mode; - unsigned long dir_mode; -}; - -#define NCP_MOUNT_VERSION_V5 (5) /* Text only */ - -#endif diff --git a/include/uapi/linux/ncp_no.h b/include/uapi/linux/ncp_no.h deleted file mode 100644 index 654d7c7f5d92..000000000000 --- a/include/uapi/linux/ncp_no.h +++ /dev/null @@ -1,20 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ -#ifndef _NCP_NO -#define _NCP_NO - -/* these define the attribute byte as seen by NCP */ -#define aRONLY (__cpu_to_le32(1)) -#define aHIDDEN (__cpu_to_le32(2)) -#define aSYSTEM (__cpu_to_le32(4)) -#define aEXECUTE (__cpu_to_le32(8)) -#define aDIR (__cpu_to_le32(0x10)) -#define aARCH (__cpu_to_le32(0x20)) -#define aSHARED (__cpu_to_le32(0x80)) -#define aDONTSUBALLOCATE (__cpu_to_le32(1L<<11)) -#define aTRANSACTIONAL (__cpu_to_le32(1L<<12)) -#define aPURGE (__cpu_to_le32(1L<<16)) -#define aRENAMEINHIBIT (__cpu_to_le32(1L<<17)) -#define aDELETEINHIBIT (__cpu_to_le32(1L<<18)) -#define aDONTCOMPRESS (__cpu_to_le32(1L<<27)) - -#endif /* _NCP_NO */ -- cgit v1.2.3 From b575e837215325544b0dbcef912f13f369de4f3f Mon Sep 17 00:00:00 2001 From: Mathieu Desnoyers Date: Sat, 2 Jun 2018 08:43:53 -0400 Subject: uapi/headers: Provide types_32_64.h Provide helper macros for fields which represent pointers in kernel-userspace ABI. This facilitates handling of 32-bit user-space by 64-bit kernels by defining those fields as 32-bit 0-padding and 32-bit integer on 32-bit architectures, which allows the kernel to treat those as 64-bit integers. The order of padding and 32-bit integer depends on the endianness. Signed-off-by: Mathieu Desnoyers Signed-off-by: Thomas Gleixner Cc: Joel Fernandes Cc: Peter Zijlstra Cc: Catalin Marinas Cc: Dave Watson Cc: Will Deacon Cc: Andi Kleen Cc: "H . Peter Anvin" Cc: Chris Lameter Cc: Russell King Cc: Andrew Hunter Cc: Michael Kerrisk Cc: "Paul E . McKenney" Cc: Paul Turner Cc: Boqun Feng Cc: Josh Triplett Cc: Steven Rostedt Cc: Ben Maurer Cc: linux-api@vger.kernel.org Cc: Andy Lutomirski Cc: Andrew Morton Cc: Linus Torvalds Link: https://lkml.kernel.org/r/20180602124408.8430-2-mathieu.desnoyers@efficios.com --- include/uapi/linux/types_32_64.h | 50 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100644 include/uapi/linux/types_32_64.h (limited to 'include/uapi/linux') diff --git a/include/uapi/linux/types_32_64.h b/include/uapi/linux/types_32_64.h new file mode 100644 index 000000000000..0a87ace34a57 --- /dev/null +++ b/include/uapi/linux/types_32_64.h @@ -0,0 +1,50 @@ +/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ +#ifndef _UAPI_LINUX_TYPES_32_64_H +#define _UAPI_LINUX_TYPES_32_64_H + +/* + * linux/types_32_64.h + * + * Integer type declaration for pointers across 32-bit and 64-bit systems. + * + * Copyright (c) 2015-2018 Mathieu Desnoyers + */ + +#ifdef __KERNEL__ +# include +#else +# include +#endif + +#include + +#ifdef __BYTE_ORDER +# if (__BYTE_ORDER == __BIG_ENDIAN) +# define LINUX_BYTE_ORDER_BIG_ENDIAN +# else +# define LINUX_BYTE_ORDER_LITTLE_ENDIAN +# endif +#else +# ifdef __BIG_ENDIAN +# define LINUX_BYTE_ORDER_BIG_ENDIAN +# else +# define LINUX_BYTE_ORDER_LITTLE_ENDIAN +# endif +#endif + +#ifdef __LP64__ +# define LINUX_FIELD_u32_u64(field) __u64 field +# define LINUX_FIELD_u32_u64_INIT_ONSTACK(field, v) field = (intptr_t)v +#else +# ifdef LINUX_BYTE_ORDER_BIG_ENDIAN +# define LINUX_FIELD_u32_u64(field) __u32 field ## _padding, field +# define LINUX_FIELD_u32_u64_INIT_ONSTACK(field, v) \ + field ## _padding = 0, field = (intptr_t)v +# else +# define LINUX_FIELD_u32_u64(field) __u32 field, field ## _padding +# define LINUX_FIELD_u32_u64_INIT_ONSTACK(field, v) \ + field = (intptr_t)v, field ## _padding = 0 +# endif +#endif + +#endif /* _UAPI_LINUX_TYPES_32_64_H */ -- cgit v1.2.3 From d7822b1e24f2df5df98c76f0e94a5416349ff759 Mon Sep 17 00:00:00 2001 From: Mathieu Desnoyers Date: Sat, 2 Jun 2018 08:43:54 -0400 Subject: rseq: Introduce restartable sequences system call Expose a new system call allowing each thread to register one userspace memory area to be used as an ABI between kernel and user-space for two purposes: user-space restartable sequences and quick access to read the current CPU number value from user-space. * Restartable sequences (per-cpu atomics) Restartables sequences allow user-space to perform update operations on per-cpu data without requiring heavy-weight atomic operations. The restartable critical sections (percpu atomics) work has been started by Paul Turner and Andrew Hunter. It lets the kernel handle restart of critical sections. [1] [2] The re-implementation proposed here brings a few simplifications to the ABI which facilitates porting to other architectures and speeds up the user-space fast path. Here are benchmarks of various rseq use-cases. Test hardware: arm32: ARMv7 Processor rev 4 (v7l) "Cubietruck", 2-core x86-64: Intel E5-2630 v3@2.40GHz, 16-core, hyperthreading The following benchmarks were all performed on a single thread. * Per-CPU statistic counter increment getcpu+atomic (ns/op) rseq (ns/op) speedup arm32: 344.0 31.4 11.0 x86-64: 15.3 2.0 7.7 * LTTng-UST: write event 32-bit header, 32-bit payload into tracer per-cpu buffer getcpu+atomic (ns/op) rseq (ns/op) speedup arm32: 2502.0 2250.0 1.1 x86-64: 117.4 98.0 1.2 * liburcu percpu: lock-unlock pair, dereference, read/compare word getcpu+atomic (ns/op) rseq (ns/op) speedup arm32: 751.0 128.5 5.8 x86-64: 53.4 28.6 1.9 * jemalloc memory allocator adapted to use rseq Using rseq with per-cpu memory pools in jemalloc at Facebook (based on rseq 2016 implementation): The production workload response-time has 1-2% gain avg. latency, and the P99 overall latency drops by 2-3%. * Reading the current CPU number Speeding up reading the current CPU number on which the caller thread is running is done by keeping the current CPU number up do date within the cpu_id field of the memory area registered by the thread. This is done by making scheduler preemption set the TIF_NOTIFY_RESUME flag on the current thread. Upon return to user-space, a notify-resume handler updates the current CPU value within the registered user-space memory area. User-space can then read the current CPU number directly from memory. Keeping the current cpu id in a memory area shared between kernel and user-space is an improvement over current mechanisms available to read the current CPU number, which has the following benefits over alternative approaches: - 35x speedup on ARM vs system call through glibc - 20x speedup on x86 compared to calling glibc, which calls vdso executing a "lsl" instruction, - 14x speedup on x86 compared to inlined "lsl" instruction, - Unlike vdso approaches, this cpu_id value can be read from an inline assembly, which makes it a useful building block for restartable sequences. - The approach of reading the cpu id through memory mapping shared between kernel and user-space is portable (e.g. ARM), which is not the case for the lsl-based x86 vdso. On x86, yet another possible approach would be to use the gs segment selector to point to user-space per-cpu data. This approach performs similarly to the cpu id cache, but it has two disadvantages: it is not portable, and it is incompatible with existing applications already using the gs segment selector for other purposes. Benchmarking various approaches for reading the current CPU number: ARMv7 Processor rev 4 (v7l) Machine model: Cubietruck - Baseline (empty loop): 8.4 ns - Read CPU from rseq cpu_id: 16.7 ns - Read CPU from rseq cpu_id (lazy register): 19.8 ns - glibc 2.19-0ubuntu6.6 getcpu: 301.8 ns - getcpu system call: 234.9 ns x86-64 Intel(R) Xeon(R) CPU E5-2630 v3 @ 2.40GHz: - Baseline (empty loop): 0.8 ns - Read CPU from rseq cpu_id: 0.8 ns - Read CPU from rseq cpu_id (lazy register): 0.8 ns - Read using gs segment selector: 0.8 ns - "lsl" inline assembly: 13.0 ns - glibc 2.19-0ubuntu6 getcpu: 16.6 ns - getcpu system call: 53.9 ns - Speed (benchmark taken on v8 of patchset) Running 10 runs of hackbench -l 100000 seems to indicate, contrary to expectations, that enabling CONFIG_RSEQ slightly accelerates the scheduler: Configuration: 2 sockets * 8-core Intel(R) Xeon(R) CPU E5-2630 v3 @ 2.40GHz (directly on hardware, hyperthreading disabled in BIOS, energy saving disabled in BIOS, turboboost disabled in BIOS, cpuidle.off=1 kernel parameter), with a Linux v4.6 defconfig+localyesconfig, restartable sequences series applied. * CONFIG_RSEQ=n avg.: 41.37 s std.dev.: 0.36 s * CONFIG_RSEQ=y avg.: 40.46 s std.dev.: 0.33 s - Size On x86-64, between CONFIG_RSEQ=n/y, the text size increase of vmlinux is 567 bytes, and the data size increase of vmlinux is 5696 bytes. [1] https://lwn.net/Articles/650333/ [2] http://www.linuxplumbersconf.org/2013/ocw/system/presentations/1695/original/LPC%20-%20PerCpu%20Atomics.pdf Signed-off-by: Mathieu Desnoyers Signed-off-by: Thomas Gleixner Acked-by: Peter Zijlstra (Intel) Cc: Joel Fernandes Cc: Catalin Marinas Cc: Dave Watson Cc: Will Deacon Cc: Andi Kleen Cc: "H . Peter Anvin" Cc: Chris Lameter Cc: Russell King Cc: Andrew Hunter Cc: Michael Kerrisk Cc: "Paul E . McKenney" Cc: Paul Turner Cc: Boqun Feng Cc: Josh Triplett Cc: Steven Rostedt Cc: Ben Maurer Cc: Alexander Viro Cc: linux-api@vger.kernel.org Cc: Andy Lutomirski Cc: Andrew Morton Cc: Linus Torvalds Link: http://lkml.kernel.org/r/20151027235635.16059.11630.stgit@pjt-glaptop.roam.corp.google.com Link: http://lkml.kernel.org/r/20150624222609.6116.86035.stgit@kitami.mtv.corp.google.com Link: https://lkml.kernel.org/r/20180602124408.8430-3-mathieu.desnoyers@efficios.com --- include/uapi/linux/rseq.h | 133 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 133 insertions(+) create mode 100644 include/uapi/linux/rseq.h (limited to 'include/uapi/linux') diff --git a/include/uapi/linux/rseq.h b/include/uapi/linux/rseq.h new file mode 100644 index 000000000000..d620fa43756c --- /dev/null +++ b/include/uapi/linux/rseq.h @@ -0,0 +1,133 @@ +/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ +#ifndef _UAPI_LINUX_RSEQ_H +#define _UAPI_LINUX_RSEQ_H + +/* + * linux/rseq.h + * + * Restartable sequences system call API + * + * Copyright (c) 2015-2018 Mathieu Desnoyers + */ + +#ifdef __KERNEL__ +# include +#else +# include +#endif + +#include + +enum rseq_cpu_id_state { + RSEQ_CPU_ID_UNINITIALIZED = -1, + RSEQ_CPU_ID_REGISTRATION_FAILED = -2, +}; + +enum rseq_flags { + RSEQ_FLAG_UNREGISTER = (1 << 0), +}; + +enum rseq_cs_flags_bit { + RSEQ_CS_FLAG_NO_RESTART_ON_PREEMPT_BIT = 0, + RSEQ_CS_FLAG_NO_RESTART_ON_SIGNAL_BIT = 1, + RSEQ_CS_FLAG_NO_RESTART_ON_MIGRATE_BIT = 2, +}; + +enum rseq_cs_flags { + RSEQ_CS_FLAG_NO_RESTART_ON_PREEMPT = + (1U << RSEQ_CS_FLAG_NO_RESTART_ON_PREEMPT_BIT), + RSEQ_CS_FLAG_NO_RESTART_ON_SIGNAL = + (1U << RSEQ_CS_FLAG_NO_RESTART_ON_SIGNAL_BIT), + RSEQ_CS_FLAG_NO_RESTART_ON_MIGRATE = + (1U << RSEQ_CS_FLAG_NO_RESTART_ON_MIGRATE_BIT), +}; + +/* + * struct rseq_cs is aligned on 4 * 8 bytes to ensure it is always + * contained within a single cache-line. It is usually declared as + * link-time constant data. + */ +struct rseq_cs { + /* Version of this structure. */ + __u32 version; + /* enum rseq_cs_flags */ + __u32 flags; + LINUX_FIELD_u32_u64(start_ip); + /* Offset from start_ip. */ + LINUX_FIELD_u32_u64(post_commit_offset); + LINUX_FIELD_u32_u64(abort_ip); +} __attribute__((aligned(4 * sizeof(__u64)))); + +/* + * struct rseq is aligned on 4 * 8 bytes to ensure it is always + * contained within a single cache-line. + * + * A single struct rseq per thread is allowed. + */ +struct rseq { + /* + * Restartable sequences cpu_id_start field. Updated by the + * kernel, and read by user-space with single-copy atomicity + * semantics. Aligned on 32-bit. Always contains a value in the + * range of possible CPUs, although the value may not be the + * actual current CPU (e.g. if rseq is not initialized). This + * CPU number value should always be compared against the value + * of the cpu_id field before performing a rseq commit or + * returning a value read from a data structure indexed using + * the cpu_id_start value. + */ + __u32 cpu_id_start; + /* + * Restartable sequences cpu_id field. Updated by the kernel, + * and read by user-space with single-copy atomicity semantics. + * Aligned on 32-bit. Values RSEQ_CPU_ID_UNINITIALIZED and + * RSEQ_CPU_ID_REGISTRATION_FAILED have a special semantic: the + * former means "rseq uninitialized", and latter means "rseq + * initialization failed". This value is meant to be read within + * rseq critical sections and compared with the cpu_id_start + * value previously read, before performing the commit instruction, + * or read and compared with the cpu_id_start value before returning + * a value loaded from a data structure indexed using the + * cpu_id_start value. + */ + __u32 cpu_id; + /* + * Restartable sequences rseq_cs field. + * + * Contains NULL when no critical section is active for the current + * thread, or holds a pointer to the currently active struct rseq_cs. + * + * Updated by user-space, which sets the address of the currently + * active rseq_cs at the beginning of assembly instruction sequence + * block, and set to NULL by the kernel when it restarts an assembly + * instruction sequence block, as well as when the kernel detects that + * it is preempting or delivering a signal outside of the range + * targeted by the rseq_cs. Also needs to be set to NULL by user-space + * before reclaiming memory that contains the targeted struct rseq_cs. + * + * Read and set by the kernel with single-copy atomicity semantics. + * Set by user-space with single-copy atomicity semantics. Aligned + * on 64-bit. + */ + LINUX_FIELD_u32_u64(rseq_cs); + /* + * - RSEQ_DISABLE flag: + * + * Fallback fast-track flag for single-stepping. + * Set by user-space if lack of progress is detected. + * Cleared by user-space after rseq finish. + * Read by the kernel. + * - RSEQ_CS_FLAG_NO_RESTART_ON_PREEMPT + * Inhibit instruction sequence block restart and event + * counter increment on preemption for this thread. + * - RSEQ_CS_FLAG_NO_RESTART_ON_SIGNAL + * Inhibit instruction sequence block restart and event + * counter increment on signal delivery for this thread. + * - RSEQ_CS_FLAG_NO_RESTART_ON_MIGRATE + * Inhibit instruction sequence block restart and event + * counter increment on migration for this thread. + */ + __u32 flags; +} __attribute__((aligned(4 * sizeof(__u64)))); + +#endif /* _UAPI_LINUX_RSEQ_H */ -- cgit v1.2.3 From 64e6dd1fb2f1ed799f317dc34aa6e251c64f4981 Mon Sep 17 00:00:00 2001 From: Gao Feng Date: Thu, 7 Jun 2018 18:15:14 +0800 Subject: netfilter: nf_conntrack: Increase __IPS_MAX_BIT with new bit IPS_OFFLOAD_BIT The __IPS_MAX_BIT is used in __ctnetlink_change_status as the max bit value. When add new bit IPS_OFFLOAD_BIT whose value is 14, we should increase the __IPS_MAX_BIT too, from 14 to 15. There is no any bug in current codes, although it lost one loop in __ctnetlink_change_status. Because the new bit IPS_OFFLOAD_BIT belongs the IPS_UNCHANGEABLE_MASK. Signed-off-by: Gao Feng Signed-off-by: Pablo Neira Ayuso --- include/uapi/linux/netfilter/nf_conntrack_common.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/uapi/linux') diff --git a/include/uapi/linux/netfilter/nf_conntrack_common.h b/include/uapi/linux/netfilter/nf_conntrack_common.h index c712eb6879f1..336014bf8868 100644 --- a/include/uapi/linux/netfilter/nf_conntrack_common.h +++ b/include/uapi/linux/netfilter/nf_conntrack_common.h @@ -112,7 +112,7 @@ enum ip_conntrack_status { IPS_EXPECTED | IPS_CONFIRMED | IPS_DYING | IPS_SEQ_ADJUST | IPS_TEMPLATE | IPS_OFFLOAD), - __IPS_MAX_BIT = 14, + __IPS_MAX_BIT = 15, }; /* Connection tracking event types */ -- cgit v1.2.3 From 7eced5ab5a7366ee7ca5360b3eca9d220c2b2887 Mon Sep 17 00:00:00 2001 From: Pablo Neira Ayuso Date: Sun, 3 Jun 2018 12:06:57 +0200 Subject: netfilter: nf_tables: add NFT_LOGLEVEL_* enumeration and use it This is internal, not exposed through uapi, and although it maps with userspace LOG_*, with the introduction of LOGLEVEL_AUDIT we are incurring in namespace pollution. This patch adds the NFT_LOGLEVEL_ enumeration and use it from nft_log. Fixes: 1a893b44de45 ("netfilter: nf_tables: Add audit support to log statement") Signed-off-by: Pablo Neira Ayuso Acked-by: Phil Sutter Signed-off-by: David S. Miller --- include/uapi/linux/netfilter/nf_tables.h | 28 +++++++++++++++++++++++++--- 1 file changed, 25 insertions(+), 3 deletions(-) (limited to 'include/uapi/linux') diff --git a/include/uapi/linux/netfilter/nf_tables.h b/include/uapi/linux/netfilter/nf_tables.h index ae00a3c49b8a..c9bf74b94f37 100644 --- a/include/uapi/linux/netfilter/nf_tables.h +++ b/include/uapi/linux/netfilter/nf_tables.h @@ -1099,9 +1099,31 @@ enum nft_log_attributes { #define NFTA_LOG_MAX (__NFTA_LOG_MAX - 1) /** - * LOGLEVEL_AUDIT - a pseudo log level enabling audit logging - */ -#define LOGLEVEL_AUDIT 8 + * enum nft_log_level - nf_tables log levels + * + * @NFT_LOGLEVEL_EMERG: system is unusable + * @NFT_LOGLEVEL_ALERT: action must be taken immediately + * @NFT_LOGLEVEL_CRIT: critical conditions + * @NFT_LOGLEVEL_ERR: error conditions + * @NFT_LOGLEVEL_WARNING: warning conditions + * @NFT_LOGLEVEL_NOTICE: normal but significant condition + * @NFT_LOGLEVEL_INFO: informational + * @NFT_LOGLEVEL_DEBUG: debug-level messages + * @NFT_LOGLEVEL_AUDIT: enabling audit logging + */ +enum nft_log_level { + NFT_LOGLEVEL_EMERG, + NFT_LOGLEVEL_ALERT, + NFT_LOGLEVEL_CRIT, + NFT_LOGLEVEL_ERR, + NFT_LOGLEVEL_WARNING, + NFT_LOGLEVEL_NOTICE, + NFT_LOGLEVEL_INFO, + NFT_LOGLEVEL_DEBUG, + NFT_LOGLEVEL_AUDIT, + __NFT_LOGLEVEL_MAX +}; +#define NFT_LOGLEVEL_MAX (__NFT_LOGLEVEL_MAX + 1) /** * enum nft_queue_attributes - nf_tables queue expression netlink attributes -- cgit v1.2.3 From a5a16e43529b5040760ebf9bd9b056dd34861f93 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Thu, 7 Jun 2018 15:37:34 +0200 Subject: xsk: Fix umem fill/completion queue mmap on 32-bit MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit With gcc-4.1.2 on 32-bit: net/xdp/xsk.c:663: warning: integer constant is too large for ‘long’ type net/xdp/xsk.c:665: warning: integer constant is too large for ‘long’ type Add the missing "ULL" suffixes to the large XDP_UMEM_PGOFF_*_RING values to fix this. net/xdp/xsk.c:663: warning: comparison is always false due to limited range of data type net/xdp/xsk.c:665: warning: comparison is always false due to limited range of data type "unsigned long" is 32-bit on 32-bit systems, hence the offset is truncated, and can never be equal to any of the XDP_UMEM_PGOFF_*_RING values. Use loff_t (and the required cast) to fix this. Fixes: 423f38329d267969 ("xsk: add umem fill queue support and mmap") Fixes: fe2308328cd2f26e ("xsk: add umem completion queue support and mmap") Signed-off-by: Geert Uytterhoeven Acked-by: Björn Töpel Signed-off-by: Daniel Borkmann --- include/uapi/linux/if_xdp.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/uapi/linux') diff --git a/include/uapi/linux/if_xdp.h b/include/uapi/linux/if_xdp.h index 1fa0e977ea8d..caed8b1614ff 100644 --- a/include/uapi/linux/if_xdp.h +++ b/include/uapi/linux/if_xdp.h @@ -63,8 +63,8 @@ struct xdp_statistics { /* Pgoff for mmaping the rings */ #define XDP_PGOFF_RX_RING 0 #define XDP_PGOFF_TX_RING 0x80000000 -#define XDP_UMEM_PGOFF_FILL_RING 0x100000000 -#define XDP_UMEM_PGOFF_COMPLETION_RING 0x180000000 +#define XDP_UMEM_PGOFF_FILL_RING 0x100000000ULL +#define XDP_UMEM_PGOFF_COMPLETION_RING 0x180000000ULL /* Rx/Tx descriptor */ struct xdp_desc { -- cgit v1.2.3 From cfecc2918d2b3c5e86ff1a6c95eabbbb17bb8fd3 Mon Sep 17 00:00:00 2001 From: Tiwei Bie Date: Fri, 1 Jun 2018 12:02:39 +0800 Subject: virtio_pci: support enabling VFs There is a new feature bit allocated in virtio spec to support SR-IOV (Single Root I/O Virtualization): https://github.com/oasis-tcs/virtio-spec/issues/11 This patch enables the support for this feature bit in virtio driver. Signed-off-by: Tiwei Bie Signed-off-by: Michael S. Tsirkin --- include/uapi/linux/virtio_config.h | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'include/uapi/linux') diff --git a/include/uapi/linux/virtio_config.h b/include/uapi/linux/virtio_config.h index 308e2096291f..b7c1f4e7d59e 100644 --- a/include/uapi/linux/virtio_config.h +++ b/include/uapi/linux/virtio_config.h @@ -49,7 +49,7 @@ * transport being used (eg. virtio_ring), the rest are per-device feature * bits. */ #define VIRTIO_TRANSPORT_F_START 28 -#define VIRTIO_TRANSPORT_F_END 34 +#define VIRTIO_TRANSPORT_F_END 38 #ifndef VIRTIO_CONFIG_NO_LEGACY /* Do we get callbacks when the ring is completely used, even if we've @@ -71,4 +71,9 @@ * this is for compatibility with legacy systems. */ #define VIRTIO_F_IOMMU_PLATFORM 33 + +/* + * Does the device support Single Root I/O Virtualization? + */ +#define VIRTIO_F_SR_IOV 37 #endif /* _UAPI_LINUX_VIRTIO_CONFIG_H */ -- cgit v1.2.3 From 2eb98105f8c7f4b867f7f714a998f5b8c1bb009b Mon Sep 17 00:00:00 2001 From: Tiwei Bie Date: Fri, 1 Jun 2018 19:26:32 +0800 Subject: virtio: update the comments for transport features The existing comments for transport features are outdated. So update them to address the latest changes in the spec. Suggested-by: Michael S. Tsirkin Signed-off-by: Tiwei Bie Reviewed-by: Cornelia Huck Signed-off-by: Michael S. Tsirkin Reviewed-by: Stefan Hajnoczi --- include/uapi/linux/virtio_config.h | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) (limited to 'include/uapi/linux') diff --git a/include/uapi/linux/virtio_config.h b/include/uapi/linux/virtio_config.h index b7c1f4e7d59e..449132c76b1c 100644 --- a/include/uapi/linux/virtio_config.h +++ b/include/uapi/linux/virtio_config.h @@ -45,9 +45,12 @@ /* We've given up on this device. */ #define VIRTIO_CONFIG_S_FAILED 0x80 -/* Some virtio feature bits (currently bits 28 through 32) are reserved for the - * transport being used (eg. virtio_ring), the rest are per-device feature - * bits. */ +/* + * Virtio feature bits VIRTIO_TRANSPORT_F_START through + * VIRTIO_TRANSPORT_F_END are reserved for the transport + * being used (e.g. virtio_ring, virtio_pci etc.), the + * rest are per-device feature bits. + */ #define VIRTIO_TRANSPORT_F_START 28 #define VIRTIO_TRANSPORT_F_END 38 -- cgit v1.2.3 From 766d3571d8e50d3a73b77043dc632226f9e6b389 Mon Sep 17 00:00:00 2001 From: "Michael S. Tsirkin" Date: Fri, 8 Jun 2018 02:19:53 +0300 Subject: kvm: fix typo in flag name KVM_X86_DISABLE_EXITS_HTL really refers to exit on halt. Obviously a typo: should be named KVM_X86_DISABLE_EXITS_HLT. Fixes: caa057a2cad ("KVM: X86: Provide a capability to disable HLT intercepts") Cc: stable@vger.kernel.org Signed-off-by: Michael S. Tsirkin Signed-off-by: Paolo Bonzini --- include/uapi/linux/kvm.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/uapi/linux') diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h index b252ceb3965c..b6270a3b38e9 100644 --- a/include/uapi/linux/kvm.h +++ b/include/uapi/linux/kvm.h @@ -677,10 +677,10 @@ struct kvm_ioeventfd { }; #define KVM_X86_DISABLE_EXITS_MWAIT (1 << 0) -#define KVM_X86_DISABLE_EXITS_HTL (1 << 1) +#define KVM_X86_DISABLE_EXITS_HLT (1 << 1) #define KVM_X86_DISABLE_EXITS_PAUSE (1 << 2) #define KVM_X86_DISABLE_VALID_EXITS (KVM_X86_DISABLE_EXITS_MWAIT | \ - KVM_X86_DISABLE_EXITS_HTL | \ + KVM_X86_DISABLE_EXITS_HLT | \ KVM_X86_DISABLE_EXITS_PAUSE) /* for KVM_ENABLE_CAP */ -- cgit v1.2.3 From 215a31f19dedd4e92a67cf5a9717ee898d012b3a Mon Sep 17 00:00:00 2001 From: Pablo Neira Ayuso Date: Mon, 11 Jun 2018 17:18:29 +0200 Subject: netfilter: nft_dynset: do not reject set updates with NFT_SET_EVAL NFT_SET_EVAL is signalling the kernel that this sets can be updated from the evaluation path, even if there are no expressions attached to the element. Otherwise, set updates with no expressions fail. Update description to describe the right semantics. Fixes: 22fe54d5fefc ("netfilter: nf_tables: add support for dynamic set updates") Signed-off-by: Pablo Neira Ayuso --- include/uapi/linux/netfilter/nf_tables.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/uapi/linux') diff --git a/include/uapi/linux/netfilter/nf_tables.h b/include/uapi/linux/netfilter/nf_tables.h index c9bf74b94f37..89438e68dc03 100644 --- a/include/uapi/linux/netfilter/nf_tables.h +++ b/include/uapi/linux/netfilter/nf_tables.h @@ -266,7 +266,7 @@ enum nft_rule_compat_attributes { * @NFT_SET_INTERVAL: set contains intervals * @NFT_SET_MAP: set is used as a dictionary * @NFT_SET_TIMEOUT: set uses timeouts - * @NFT_SET_EVAL: set contains expressions for evaluation + * @NFT_SET_EVAL: set can be updated from the evaluation path * @NFT_SET_OBJECT: set contains stateful objects */ enum nft_set_flags { -- cgit v1.2.3 From 2dd5aa15d9a2d4b87b32d93f3c5a66f175c0123d Mon Sep 17 00:00:00 2001 From: Jorge Sanjuan Date: Thu, 14 Jun 2018 15:05:55 +0100 Subject: ALSA: usb-audio: Add bi-directional terminal types Define the bi-directional USB terminal types for audio devices. Signed-off-by: Jorge Sanjuan Signed-off-by: Takashi Iwai --- include/uapi/linux/usb/audio.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/uapi/linux') diff --git a/include/uapi/linux/usb/audio.h b/include/uapi/linux/usb/audio.h index 13d98e6e0db1..74e520fb944f 100644 --- a/include/uapi/linux/usb/audio.h +++ b/include/uapi/linux/usb/audio.h @@ -230,6 +230,14 @@ struct uac1_output_terminal_descriptor { #define UAC_OUTPUT_TERMINAL_COMMUNICATION_SPEAKER 0x306 #define UAC_OUTPUT_TERMINAL_LOW_FREQ_EFFECTS_SPEAKER 0x307 +/* Terminals - 2.4 Bi-directional Terminal Types */ +#define UAC_BIDIR_TERMINAL_UNDEFINED 0x400 +#define UAC_BIDIR_TERMINAL_HANDSET 0x401 +#define UAC_BIDIR_TERMINAL_HEADSET 0x402 +#define UAC_BIDIR_TERMINAL_SPEAKER_PHONE 0x403 +#define UAC_BIDIR_TERMINAL_ECHO_SUPPRESSING 0x404 +#define UAC_BIDIR_TERMINAL_ECHO_CANCELING 0x405 + /* Set bControlSize = 2 as default setting */ #define UAC_DT_FEATURE_UNIT_SIZE(ch) (7 + ((ch) + 1) * 2) -- cgit v1.2.3 From 94aefd32f431a2c15f9d2c5f8f19dece73a77b52 Mon Sep 17 00:00:00 2001 From: Avi Kivity Date: Fri, 8 Jun 2018 17:55:05 +0300 Subject: aio: mark __aio_sigset::sigmask const io_pgetevents() will not change the signal mask. Mark it const to make it clear and to reduce the need for casts in user code. Reviewed-by: Christoph Hellwig Signed-off-by: Avi Kivity Signed-off-by: Al Viro --- include/uapi/linux/aio_abi.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/uapi/linux') diff --git a/include/uapi/linux/aio_abi.h b/include/uapi/linux/aio_abi.h index 75846164290e..d00221345c19 100644 --- a/include/uapi/linux/aio_abi.h +++ b/include/uapi/linux/aio_abi.h @@ -109,7 +109,7 @@ struct iocb { #undef IFLITTLE struct __aio_sigset { - sigset_t __user *sigmask; + const sigset_t __user *sigmask; size_t sigsetsize; }; -- cgit v1.2.3 From badbc27df3a934e0025be238754f9ca6a852c006 Mon Sep 17 00:00:00 2001 From: Luca Coelho Date: Fri, 8 Jun 2018 10:04:47 +0300 Subject: nl80211: fix some kernel doc tag mistakes There is a bunch of tags marking constants with &, which means struct or enum name. Replace them with %, which is the correct tag for constants. Signed-off-by: Luca Coelho Signed-off-by: Johannes Berg --- include/uapi/linux/nl80211.h | 28 ++++++++++++++-------------- 1 file changed, 14 insertions(+), 14 deletions(-) (limited to 'include/uapi/linux') diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h index 28b36545de24..27e4e441caac 100644 --- a/include/uapi/linux/nl80211.h +++ b/include/uapi/linux/nl80211.h @@ -981,18 +981,18 @@ * only the %NL80211_ATTR_IE data is used and updated with this command. * * @NL80211_CMD_SET_PMK: For offloaded 4-Way handshake, set the PMK or PMK-R0 - * for the given authenticator address (specified with &NL80211_ATTR_MAC). - * When &NL80211_ATTR_PMKR0_NAME is set, &NL80211_ATTR_PMK specifies the + * for the given authenticator address (specified with %NL80211_ATTR_MAC). + * When %NL80211_ATTR_PMKR0_NAME is set, %NL80211_ATTR_PMK specifies the * PMK-R0, otherwise it specifies the PMK. * @NL80211_CMD_DEL_PMK: For offloaded 4-Way handshake, delete the previously * configured PMK for the authenticator address identified by - * &NL80211_ATTR_MAC. + * %NL80211_ATTR_MAC. * @NL80211_CMD_PORT_AUTHORIZED: An event that indicates that the 4 way * handshake was completed successfully by the driver. The BSSID is - * specified with &NL80211_ATTR_MAC. Drivers that support 4 way handshake + * specified with %NL80211_ATTR_MAC. Drivers that support 4 way handshake * offload should send this event after indicating 802.11 association with - * &NL80211_CMD_CONNECT or &NL80211_CMD_ROAM. If the 4 way handshake failed - * &NL80211_CMD_DISCONNECT should be indicated instead. + * %NL80211_CMD_CONNECT or %NL80211_CMD_ROAM. If the 4 way handshake failed + * %NL80211_CMD_DISCONNECT should be indicated instead. * * @NL80211_CMD_CONTROL_PORT_FRAME: Control Port (e.g. PAE) frame TX request * and RX notification. This command is used both as a request to transmit @@ -1029,9 +1029,9 @@ * initiated the connection through the connect request. * * @NL80211_CMD_STA_OPMODE_CHANGED: An event that notify station's - * ht opmode or vht opmode changes using any of &NL80211_ATTR_SMPS_MODE, - * &NL80211_ATTR_CHANNEL_WIDTH,&NL80211_ATTR_NSS attributes with its - * address(specified in &NL80211_ATTR_MAC). + * ht opmode or vht opmode changes using any of %NL80211_ATTR_SMPS_MODE, + * %NL80211_ATTR_CHANNEL_WIDTH,%NL80211_ATTR_NSS attributes with its + * address(specified in %NL80211_ATTR_MAC). * * @NL80211_CMD_MAX: highest used command number * @__NL80211_CMD_AFTER_LAST: internal use @@ -2218,7 +2218,7 @@ enum nl80211_commands { * @NL80211_ATTR_EXTERNAL_AUTH_ACTION: Identify the requested external * authentication operation (u32 attribute with an * &enum nl80211_external_auth_action value). This is used with the - * &NL80211_CMD_EXTERNAL_AUTH request event. + * %NL80211_CMD_EXTERNAL_AUTH request event. * @NL80211_ATTR_EXTERNAL_AUTH_SUPPORT: Flag attribute indicating that the user * space supports external authentication. This attribute shall be used * only with %NL80211_CMD_CONNECT request. The driver may offload @@ -3491,7 +3491,7 @@ enum nl80211_sched_scan_match_attr { * @NL80211_RRF_AUTO_BW: maximum available bandwidth should be calculated * base on contiguous rules and wider channels will be allowed to cross * multiple contiguous/overlapping frequency ranges. - * @NL80211_RRF_IR_CONCURRENT: See &NL80211_FREQUENCY_ATTR_IR_CONCURRENT + * @NL80211_RRF_IR_CONCURRENT: See %NL80211_FREQUENCY_ATTR_IR_CONCURRENT * @NL80211_RRF_NO_HT40MINUS: channels can't be used in HT40- operation * @NL80211_RRF_NO_HT40PLUS: channels can't be used in HT40+ operation * @NL80211_RRF_NO_80MHZ: 80MHz operation not allowed @@ -5643,11 +5643,11 @@ enum nl80211_nan_func_attributes { * @NL80211_NAN_SRF_INCLUDE: present if the include bit of the SRF set. * This is a flag. * @NL80211_NAN_SRF_BF: Bloom Filter. Present if and only if - * &NL80211_NAN_SRF_MAC_ADDRS isn't present. This attribute is binary. + * %NL80211_NAN_SRF_MAC_ADDRS isn't present. This attribute is binary. * @NL80211_NAN_SRF_BF_IDX: index of the Bloom Filter. Mandatory if - * &NL80211_NAN_SRF_BF is present. This is a u8. + * %NL80211_NAN_SRF_BF is present. This is a u8. * @NL80211_NAN_SRF_MAC_ADDRS: list of MAC addresses for the SRF. Present if - * and only if &NL80211_NAN_SRF_BF isn't present. This is a nested + * and only if %NL80211_NAN_SRF_BF isn't present. This is a nested * attribute. Each nested attribute is a MAC address. * @NUM_NL80211_NAN_SRF_ATTR: internal * @NL80211_NAN_SRF_ATTR_MAX: highest NAN SRF attribute -- cgit v1.2.3 From 5fb94e9ca333f0fe1d96de06704a79942b3832c3 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Tue, 8 May 2018 15:14:57 -0300 Subject: docs: Fix some broken references As we move stuff around, some doc references are broken. Fix some of them via this script: ./scripts/documentation-file-ref-check --fix Manually checked if the produced result is valid, removing a few false-positives. Acked-by: Takashi Iwai Acked-by: Masami Hiramatsu Acked-by: Stephen Boyd Acked-by: Charles Keepax Acked-by: Mathieu Poirier Reviewed-by: Coly Li Signed-off-by: Mauro Carvalho Chehab Acked-by: Jonathan Corbet --- include/uapi/linux/prctl.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/uapi/linux') diff --git a/include/uapi/linux/prctl.h b/include/uapi/linux/prctl.h index db9f15f5db04..c0d7ea0bf5b6 100644 --- a/include/uapi/linux/prctl.h +++ b/include/uapi/linux/prctl.h @@ -170,7 +170,7 @@ struct prctl_mm_map { * asking selinux for a specific new context (e.g. with runcon) will result * in execve returning -EPERM. * - * See Documentation/prctl/no_new_privs.txt for more details. + * See Documentation/userspace-api/no_new_privs.rst for more details. */ #define PR_SET_NO_NEW_PRIVS 38 #define PR_GET_NO_NEW_PRIVS 39 -- cgit v1.2.3 From 6c3796d130ed2860489885a934dcb7bb334d5eb0 Mon Sep 17 00:00:00 2001 From: "bstroesser@ts.fujitsu.com" Date: Thu, 24 May 2018 18:49:41 +0200 Subject: scsi: target: tcmu: add read length support Generally target core and TCMUser seem to work fine for tape devices and media changers. But there is at least one situation where TCMUser is not able to support sequential access device emulation correctly. The situation is when an initiator sends a SCSI READ CDB with a length that is greater than the length of the tape block to read. We can distinguish two subcases: A) The initiator sent the READ CDB with the SILI bit being set. In this case the sequential access device has to transfer the data from the tape block (only the length of the tape block) and transmit a good status. The current interface between TCMUser and the userspace does not support reduction of the read data size by the userspace program. The patch below fixes this subcase by allowing the userspace program to specify a reduced data size in read direction. B) The initiator sent the READ CDB with the SILI bit not being set. In this case the sequential access device has to transfer the data from the tape block as in A), but additionally has to transmit CHECK CONDITION with the ILI bit set and NO SENSE in the sensebytes. The information field in the sensebytes must contain the residual count. With the below patch a user space program can specify the real read data length and appropriate sensebytes. TCMUser then uses the se_cmd flag SCF_TREAT_READ_AS_NORMAL, to force target core to transmit the real data size and the sensebytes. Note: the flag SCF_TREAT_READ_AS_NORMAL is introduced by Lee Duncan's patch "[PATCH v4] target: transport should handle st FM/EOM/ILI reads" from Tue, 15 May 2018 18:25:24 -0700. Signed-off-by: Bodo Stroesser Acked-by: Mike Christie Reviewed-by: Lee Duncan Signed-off-by: Martin K. Petersen --- include/uapi/linux/target_core_user.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/uapi/linux') diff --git a/include/uapi/linux/target_core_user.h b/include/uapi/linux/target_core_user.h index 6e299349b158..b7b57967d90f 100644 --- a/include/uapi/linux/target_core_user.h +++ b/include/uapi/linux/target_core_user.h @@ -44,6 +44,7 @@ #define TCMU_MAILBOX_VERSION 2 #define ALIGN_SIZE 64 /* Should be enough for most CPUs */ #define TCMU_MAILBOX_FLAG_CAP_OOOC (1 << 0) /* Out-of-order completions */ +#define TCMU_MAILBOX_FLAG_CAP_READ_LEN (1 << 1) /* Read data length */ struct tcmu_mailbox { __u16 version; @@ -71,6 +72,7 @@ struct tcmu_cmd_entry_hdr { __u16 cmd_id; __u8 kflags; #define TCMU_UFLAG_UNKNOWN_OP 0x1 +#define TCMU_UFLAG_READ_LEN 0x2 __u8 uflags; } __packed; @@ -119,7 +121,7 @@ struct tcmu_cmd_entry { __u8 scsi_status; __u8 __pad1; __u16 __pad2; - __u32 __pad3; + __u32 read_len; char sense_buffer[TCMU_SENSE_BUFFERSIZE]; } rsp; }; -- cgit v1.2.3 From 08ba91ee6e2c1c08d3f0648f978cbb5dbf3491d8 Mon Sep 17 00:00:00 2001 From: Doron Roberts-Kedes Date: Fri, 15 Jun 2018 14:05:32 -0700 Subject: nbd: Add the nbd NBD_DISCONNECT_ON_CLOSE config flag. If NBD_DISCONNECT_ON_CLOSE is set on a device, then the driver will issue a disconnect from nbd_release if the device has no remaining bdev->bd_openers. Fix ret val so reconfigure with only setting the flag succeeds. Reviewed-by: Josef Bacik Signed-off-by: Doron Roberts-Kedes Signed-off-by: Jens Axboe --- include/uapi/linux/nbd.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/uapi/linux') diff --git a/include/uapi/linux/nbd.h b/include/uapi/linux/nbd.h index 85a3fb65e40a..20d6cc91435d 100644 --- a/include/uapi/linux/nbd.h +++ b/include/uapi/linux/nbd.h @@ -53,6 +53,9 @@ enum { /* These are client behavior specific flags. */ #define NBD_CFLAG_DESTROY_ON_DISCONNECT (1 << 0) /* delete the nbd device on disconnect. */ +#define NBD_CFLAG_DISCONNECT_ON_CLOSE (1 << 1) /* disconnect the nbd device on + * close by last opener. + */ /* userspace doesn't need the nbd_device structure */ -- cgit v1.2.3 From a11e1d432b51f63ba698d044441284a661f01144 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Thu, 28 Jun 2018 09:43:44 -0700 Subject: Revert changes to convert to ->poll_mask() and aio IOCB_CMD_POLL The poll() changes were not well thought out, and completely unexplained. They also caused a huge performance regression, because "->poll()" was no longer a trivial file operation that just called down to the underlying file operations, but instead did at least two indirect calls. Indirect calls are sadly slow now with the Spectre mitigation, but the performance problem could at least be largely mitigated by changing the "->get_poll_head()" operation to just have a per-file-descriptor pointer to the poll head instead. That gets rid of one of the new indirections. But that doesn't fix the new complexity that is completely unwarranted for the regular case. The (undocumented) reason for the poll() changes was some alleged AIO poll race fixing, but we don't make the common case slower and more complex for some uncommon special case, so this all really needs way more explanations and most likely a fundamental redesign. [ This revert is a revert of about 30 different commits, not reverted individually because that would just be unnecessarily messy - Linus ] Cc: Al Viro Cc: Christoph Hellwig Signed-off-by: Linus Torvalds --- include/uapi/linux/aio_abi.h | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'include/uapi/linux') diff --git a/include/uapi/linux/aio_abi.h b/include/uapi/linux/aio_abi.h index d00221345c19..d4e768d55d14 100644 --- a/include/uapi/linux/aio_abi.h +++ b/include/uapi/linux/aio_abi.h @@ -39,8 +39,10 @@ enum { IOCB_CMD_PWRITE = 1, IOCB_CMD_FSYNC = 2, IOCB_CMD_FDSYNC = 3, - /* 4 was the experimental IOCB_CMD_PREADX */ - IOCB_CMD_POLL = 5, + /* These two are experimental. + * IOCB_CMD_PREADX = 4, + * IOCB_CMD_POLL = 5, + */ IOCB_CMD_NOOP = 6, IOCB_CMD_PREADV = 7, IOCB_CMD_PWRITEV = 8, @@ -109,7 +111,7 @@ struct iocb { #undef IFLITTLE struct __aio_sigset { - const sigset_t __user *sigmask; + sigset_t __user *sigmask; size_t sigsetsize; }; -- cgit v1.2.3 From 4c79579b44b1876444f4d04de31c1a37098a0350 Mon Sep 17 00:00:00 2001 From: David Ahern Date: Tue, 26 Jun 2018 16:21:18 -0700 Subject: bpf: Change bpf_fib_lookup to return lookup status For ACLs implemented using either FIB rules or FIB entries, the BPF program needs the FIB lookup status to be able to drop the packet. Since the bpf_fib_lookup API has not reached a released kernel yet, change the return code to contain an encoding of the FIB lookup result and return the nexthop device index in the params struct. In addition, inform the BPF program of any post FIB lookup reason as to why the packet needs to go up the stack. The fib result for unicast routes must have an egress device, so remove the check that it is non-NULL. Signed-off-by: David Ahern Signed-off-by: Daniel Borkmann --- include/uapi/linux/bpf.h | 28 +++++++++++++++++++++++----- 1 file changed, 23 insertions(+), 5 deletions(-) (limited to 'include/uapi/linux') diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h index 59b19b6a40d7..b7db3261c62d 100644 --- a/include/uapi/linux/bpf.h +++ b/include/uapi/linux/bpf.h @@ -1857,7 +1857,8 @@ union bpf_attr { * is resolved), the nexthop address is returned in ipv4_dst * or ipv6_dst based on family, smac is set to mac address of * egress device, dmac is set to nexthop mac address, rt_metric - * is set to metric from route (IPv4/IPv6 only). + * is set to metric from route (IPv4/IPv6 only), and ifindex + * is set to the device index of the nexthop from the FIB lookup. * * *plen* argument is the size of the passed in struct. * *flags* argument can be a combination of one or more of the @@ -1873,9 +1874,10 @@ union bpf_attr { * *ctx* is either **struct xdp_md** for XDP programs or * **struct sk_buff** tc cls_act programs. * Return - * Egress device index on success, 0 if packet needs to continue - * up the stack for further processing or a negative error in case - * of failure. + * * < 0 if any input argument is invalid + * * 0 on success (packet is forwarded, nexthop neighbor exists) + * * > 0 one of **BPF_FIB_LKUP_RET_** codes explaining why the + * * packet is not forwarded or needs assist from full stack * * int bpf_sock_hash_update(struct bpf_sock_ops_kern *skops, struct bpf_map *map, void *key, u64 flags) * Description @@ -2612,6 +2614,18 @@ struct bpf_raw_tracepoint_args { #define BPF_FIB_LOOKUP_DIRECT BIT(0) #define BPF_FIB_LOOKUP_OUTPUT BIT(1) +enum { + BPF_FIB_LKUP_RET_SUCCESS, /* lookup successful */ + BPF_FIB_LKUP_RET_BLACKHOLE, /* dest is blackholed; can be dropped */ + BPF_FIB_LKUP_RET_UNREACHABLE, /* dest is unreachable; can be dropped */ + BPF_FIB_LKUP_RET_PROHIBIT, /* dest not allowed; can be dropped */ + BPF_FIB_LKUP_RET_NOT_FWDED, /* packet is not forwarded */ + BPF_FIB_LKUP_RET_FWD_DISABLED, /* fwding is not enabled on ingress */ + BPF_FIB_LKUP_RET_UNSUPP_LWT, /* fwd requires encapsulation */ + BPF_FIB_LKUP_RET_NO_NEIGH, /* no neighbor entry for nh */ + BPF_FIB_LKUP_RET_FRAG_NEEDED, /* fragmentation required to fwd */ +}; + struct bpf_fib_lookup { /* input: network family for lookup (AF_INET, AF_INET6) * output: network family of egress nexthop @@ -2625,7 +2639,11 @@ struct bpf_fib_lookup { /* total length of packet from network header - used for MTU check */ __u16 tot_len; - __u32 ifindex; /* L3 device index for lookup */ + + /* input: L3 device index for lookup + * output: device index from FIB lookup + */ + __u32 ifindex; union { /* inputs to lookup */ -- cgit v1.2.3 From 2cd3ae2129736f9019130064d09713a375870941 Mon Sep 17 00:00:00 2001 From: Avi Kivity Date: Fri, 29 Jun 2018 15:37:25 +0200 Subject: aio: mark __aio_sigset::sigmask const io_pgetevents() will not change the signal mask. Mark it const to make it clear and to reduce the need for casts in user code. Reviewed-by: Christoph Hellwig Signed-off-by: Avi Kivity Signed-off-by: Al Viro [hch: reapply the patch that got incorrectly reverted] Signed-off-by: Christoph Hellwig Signed-off-by: Linus Torvalds --- include/uapi/linux/aio_abi.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/uapi/linux') diff --git a/include/uapi/linux/aio_abi.h b/include/uapi/linux/aio_abi.h index d4e768d55d14..3c5038b587ba 100644 --- a/include/uapi/linux/aio_abi.h +++ b/include/uapi/linux/aio_abi.h @@ -111,7 +111,7 @@ struct iocb { #undef IFLITTLE struct __aio_sigset { - sigset_t __user *sigmask; + const sigset_t __user *sigmask; size_t sigsetsize; }; -- cgit v1.2.3