diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/include/asm/xen/hypervisor.h | 8 | ||||
| -rw-r--r-- | arch/arm/include/asm/xen/page.h | 1 | ||||
| -rw-r--r-- | arch/arm/kernel/setup.c | 2 | ||||
| -rw-r--r-- | arch/arm/xen/enlighten.c | 62 | ||||
| -rw-r--r-- | arch/arm/xen/mm.c | 2 | ||||
| -rw-r--r-- | arch/arm/xen/p2m.c | 2 | ||||
| -rw-r--r-- | arch/arm64/kernel/setup.c | 2 | ||||
| -rw-r--r-- | arch/x86/configs/xen.config | 28 |
8 files changed, 81 insertions, 26 deletions
diff --git a/arch/arm/include/asm/xen/hypervisor.h b/arch/arm/include/asm/xen/hypervisor.h index 1317ee40f4df..04ff8e7b37df 100644 --- a/arch/arm/include/asm/xen/hypervisor.h +++ b/arch/arm/include/asm/xen/hypervisor.h @@ -1,6 +1,8 @@ #ifndef _ASM_ARM_XEN_HYPERVISOR_H #define _ASM_ARM_XEN_HYPERVISOR_H +#include <linux/init.h> + extern struct shared_info *HYPERVISOR_shared_info; extern struct start_info *xen_start_info; @@ -18,4 +20,10 @@ static inline enum paravirt_lazy_mode paravirt_get_lazy_mode(void) extern struct dma_map_ops *xen_dma_ops; +#ifdef CONFIG_XEN +void __init xen_early_init(void); +#else +static inline void xen_early_init(void) { return; } +#endif + #endif /* _ASM_ARM_XEN_HYPERVISOR_H */ diff --git a/arch/arm/include/asm/xen/page.h b/arch/arm/include/asm/xen/page.h index 0b579b2f4e0e..1bee8ca12494 100644 --- a/arch/arm/include/asm/xen/page.h +++ b/arch/arm/include/asm/xen/page.h @@ -12,7 +12,6 @@ #include <xen/interface/grant_table.h> #define phys_to_machine_mapping_valid(pfn) (1) -#define mfn_to_virt(m) (__va(mfn_to_pfn(m) << PAGE_SHIFT)) #define pte_mfn pte_pfn #define mfn_pte pfn_pte diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c index e6d8c7658ffd..36c18b73c1f4 100644 --- a/arch/arm/kernel/setup.c +++ b/arch/arm/kernel/setup.c @@ -46,6 +46,7 @@ #include <asm/cacheflush.h> #include <asm/cachetype.h> #include <asm/tlbflush.h> +#include <asm/xen/hypervisor.h> #include <asm/prom.h> #include <asm/mach/arch.h> @@ -972,6 +973,7 @@ void __init setup_arch(char **cmdline_p) arm_dt_init_cpu_maps(); psci_init(); + xen_early_init(); #ifdef CONFIG_SMP if (is_smp()) { if (!mdesc->smp_init || !mdesc->smp_init()) { diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c index 7d0f07020c80..6c09cc440a2b 100644 --- a/arch/arm/xen/enlighten.c +++ b/arch/arm/xen/enlighten.c @@ -24,6 +24,7 @@ #include <linux/cpuidle.h> #include <linux/cpufreq.h> #include <linux/cpu.h> +#include <linux/console.h> #include <linux/mm.h> @@ -51,7 +52,9 @@ EXPORT_SYMBOL_GPL(xen_have_vector_callback); int xen_platform_pci_unplug = XEN_UNPLUG_ALL; EXPORT_SYMBOL_GPL(xen_platform_pci_unplug); -static __read_mostly int xen_events_irq = -1; +static __read_mostly unsigned int xen_events_irq; + +static __initdata struct device_node *xen_node; int xen_remap_domain_mfn_array(struct vm_area_struct *vma, unsigned long addr, @@ -150,40 +153,28 @@ static irqreturn_t xen_arm_callback(int irq, void *arg) * documentation of the Xen Device Tree format. */ #define GRANT_TABLE_PHYSADDR 0 -static int __init xen_guest_init(void) +void __init xen_early_init(void) { - struct xen_add_to_physmap xatp; - static struct shared_info *shared_info_page = 0; - struct device_node *node; int len; const char *s = NULL; const char *version = NULL; const char *xen_prefix = "xen,xen-"; - struct resource res; - phys_addr_t grant_frames; - node = of_find_compatible_node(NULL, NULL, "xen,xen"); - if (!node) { + xen_node = of_find_compatible_node(NULL, NULL, "xen,xen"); + if (!xen_node) { pr_debug("No Xen support\n"); - return 0; + return; } - s = of_get_property(node, "compatible", &len); + s = of_get_property(xen_node, "compatible", &len); if (strlen(xen_prefix) + 3 < len && !strncmp(xen_prefix, s, strlen(xen_prefix))) version = s + strlen(xen_prefix); if (version == NULL) { pr_debug("Xen version not found\n"); - return 0; + return; } - if (of_address_to_resource(node, GRANT_TABLE_PHYSADDR, &res)) - return 0; - grant_frames = res.start; - xen_events_irq = irq_of_parse_and_map(node, 0); - pr_info("Xen %s support found, events_irq=%d gnttab_frame=%pa\n", - version, xen_events_irq, &grant_frames); - if (xen_events_irq < 0) - return -ENODEV; + pr_info("Xen %s support found\n", version); xen_domain_type = XEN_HVM_DOMAIN; @@ -194,9 +185,34 @@ static int __init xen_guest_init(void) else xen_start_info->flags &= ~(SIF_INITDOMAIN|SIF_PRIVILEGED); - if (!shared_info_page) - shared_info_page = (struct shared_info *) - get_zeroed_page(GFP_KERNEL); + if (!console_set_on_cmdline && !xen_initial_domain()) + add_preferred_console("hvc", 0, NULL); +} + +static int __init xen_guest_init(void) +{ + struct xen_add_to_physmap xatp; + struct shared_info *shared_info_page = NULL; + struct resource res; + phys_addr_t grant_frames; + + if (!xen_domain()) + return 0; + + if (of_address_to_resource(xen_node, GRANT_TABLE_PHYSADDR, &res)) { + pr_err("Xen grant table base address not found\n"); + return -ENODEV; + } + grant_frames = res.start; + + xen_events_irq = irq_of_parse_and_map(xen_node, 0); + if (!xen_events_irq) { + pr_err("Xen event channel interrupt not found\n"); + return -ENODEV; + } + + shared_info_page = (struct shared_info *)get_zeroed_page(GFP_KERNEL); + if (!shared_info_page) { pr_err("not enough memory\n"); return -ENOMEM; diff --git a/arch/arm/xen/mm.c b/arch/arm/xen/mm.c index 498325074a06..03e75fef15b8 100644 --- a/arch/arm/xen/mm.c +++ b/arch/arm/xen/mm.c @@ -15,10 +15,10 @@ #include <xen/xen.h> #include <xen/interface/grant_table.h> #include <xen/interface/memory.h> +#include <xen/page.h> #include <xen/swiotlb-xen.h> #include <asm/cacheflush.h> -#include <asm/xen/page.h> #include <asm/xen/hypercall.h> #include <asm/xen/interface.h> diff --git a/arch/arm/xen/p2m.c b/arch/arm/xen/p2m.c index cb7a14c5cd69..887596c67b12 100644 --- a/arch/arm/xen/p2m.c +++ b/arch/arm/xen/p2m.c @@ -10,10 +10,10 @@ #include <xen/xen.h> #include <xen/interface/memory.h> +#include <xen/page.h> #include <xen/swiotlb-xen.h> #include <asm/cacheflush.h> -#include <asm/xen/page.h> #include <asm/xen/hypercall.h> #include <asm/xen/interface.h> diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c index ffd3970721bf..f3067d4d4e35 100644 --- a/arch/arm64/kernel/setup.c +++ b/arch/arm64/kernel/setup.c @@ -64,6 +64,7 @@ #include <asm/psci.h> #include <asm/efi.h> #include <asm/virt.h> +#include <asm/xen/hypervisor.h> unsigned long elf_hwcap __read_mostly; EXPORT_SYMBOL_GPL(elf_hwcap); @@ -401,6 +402,7 @@ void __init setup_arch(char **cmdline_p) } else { psci_acpi_init(); } + xen_early_init(); cpu_read_bootcpu_ops(); #ifdef CONFIG_SMP diff --git a/arch/x86/configs/xen.config b/arch/x86/configs/xen.config new file mode 100644 index 000000000000..d9fc7139fd46 --- /dev/null +++ b/arch/x86/configs/xen.config @@ -0,0 +1,28 @@ +# global x86 required specific stuff +# On 32-bit HIGHMEM4G is not allowed +CONFIG_HIGHMEM64G=y +CONFIG_64BIT=y + +# These enable us to allow some of the +# not so generic stuff below +CONFIG_HYPERVISOR_GUEST=y +CONFIG_PCI=y +CONFIG_PCI_MSI=y +CONFIG_X86_MCE=y +CONFIG_ACPI_PROCESSOR=y +CONFIG_CPU_FREQ=y + +# x86 xen specific config options +CONFIG_XEN_PVH=y +CONFIG_XEN_MAX_DOMAIN_MEMORY=500 +CONFIG_XEN_SAVE_RESTORE=y +# CONFIG_XEN_DEBUG_FS is not set +CONFIG_XEN_MCE_LOG=y +CONFIG_XEN_ACPI_PROCESSOR=m +# x86 specific backend drivers +CONFIG_XEN_PCIDEV_BACKEND=m +# x86 specific frontend drivers +CONFIG_XEN_PCIDEV_FRONTEND=m +# depends on MEMORY_HOTPLUG, arm64 doesn't enable this yet, +# move to generic config if it ever does. +CONFIG_XEN_BALLOON_MEMORY_HOTPLUG=y |