diff options
| author | Steven Chen <chenste@linux.microsoft.com> | 2025-04-21 15:25:09 -0700 |
|---|---|---|
| committer | Mimi Zohar <zohar@linux.ibm.com> | 2025-04-29 15:54:53 -0400 |
| commit | 0091d9241ea24c5275be4a3e5a032862fd9de9ec (patch) | |
| tree | c9bc30f0ff6c9aeeca8ea1479e0c077bfdd5c239 /include/linux | |
| parent | c95e1acb6d7f00efab73e41b31e0560751e3f469 (diff) | |
kexec: define functions to map and unmap segments
Implement kimage_map_segment() to enable IMA to map the measurement log
list to the kimage structure during the kexec 'load' stage. This function
gathers the source pages within the specified address range, and maps them
to a contiguous virtual address range.
This is a preparation for later usage.
Implement kimage_unmap_segment() for unmapping segments using vunmap().
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Dave Young <dyoung@redhat.com>
Co-developed-by: Tushar Sugandhi <tusharsu@linux.microsoft.com>
Signed-off-by: Tushar Sugandhi <tusharsu@linux.microsoft.com>
Signed-off-by: Steven Chen <chenste@linux.microsoft.com>
Acked-by: Baoquan He <bhe@redhat.com>
Tested-by: Stefan Berger <stefanb@linux.ibm.com> # ppc64/kvm
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/kexec.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/kexec.h b/include/linux/kexec.h index c8971861521a..805743208d19 100644 --- a/include/linux/kexec.h +++ b/include/linux/kexec.h @@ -474,13 +474,19 @@ extern bool kexec_file_dbg_print; #define kexec_dprintk(fmt, arg...) \ do { if (kexec_file_dbg_print) pr_info(fmt, ##arg); } while (0) +extern void *kimage_map_segment(struct kimage *image, unsigned long addr, unsigned long size); +extern void kimage_unmap_segment(void *buffer); #else /* !CONFIG_KEXEC_CORE */ struct pt_regs; struct task_struct; +struct kimage; static inline void __crash_kexec(struct pt_regs *regs) { } static inline void crash_kexec(struct pt_regs *regs) { } static inline int kexec_should_crash(struct task_struct *p) { return 0; } static inline int kexec_crash_loaded(void) { return 0; } +static inline void *kimage_map_segment(struct kimage *image, unsigned long addr, unsigned long size) +{ return NULL; } +static inline void kimage_unmap_segment(void *buffer) { } #define kexec_in_progress false #endif /* CONFIG_KEXEC_CORE */ |