diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/include/asm/realmode.h | 1 | ||||
| -rw-r--r-- | arch/x86/include/asm/x86_init.h | 4 | ||||
| -rw-r--r-- | arch/x86/kernel/setup.c | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/x86_init.c | 3 | ||||
| -rw-r--r-- | arch/x86/realmode/init.c | 8 | ||||
| -rw-r--r-- | arch/x86/xen/enlighten_pv.c | 2 |
6 files changed, 17 insertions, 3 deletions
diff --git a/arch/x86/include/asm/realmode.h b/arch/x86/include/asm/realmode.h index fd6f6e5b755a..a336feef0af1 100644 --- a/arch/x86/include/asm/realmode.h +++ b/arch/x86/include/asm/realmode.h @@ -91,6 +91,7 @@ static inline void set_real_mode_mem(phys_addr_t mem) void reserve_real_mode(void); void load_trampoline_pgtable(void); +void init_real_mode(void); #endif /* __ASSEMBLY__ */ diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h index e9170457697e..c1c8c581759d 100644 --- a/arch/x86/include/asm/x86_init.h +++ b/arch/x86/include/asm/x86_init.h @@ -285,6 +285,8 @@ struct x86_hyper_runtime { * possible in x86_early_init_platform_quirks() by * only using the current x86_hardware_subarch * semantics. + * @realmode_reserve: reserve memory for realmode trampoline + * @realmode_init: initialize realmode trampoline * @hyper: x86 hypervisor specific runtime callbacks */ struct x86_platform_ops { @@ -301,6 +303,8 @@ struct x86_platform_ops { void (*apic_post_init)(void); struct x86_legacy_features legacy; void (*set_legacy_features)(void); + void (*realmode_reserve)(void); + void (*realmode_init)(void); struct x86_hyper_runtime hyper; struct x86_guest guest; }; diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index 216fee7144ee..892609cde4a2 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -1175,7 +1175,7 @@ void __init setup_arch(char **cmdline_p) * Moreover, on machines with SandyBridge graphics or in setups that use * crashkernel the entire 1M is reserved anyway. */ - reserve_real_mode(); + x86_platform.realmode_reserve(); init_mem_mapping(); diff --git a/arch/x86/kernel/x86_init.c b/arch/x86/kernel/x86_init.c index 57353519bc11..ef80d361b463 100644 --- a/arch/x86/kernel/x86_init.c +++ b/arch/x86/kernel/x86_init.c @@ -25,6 +25,7 @@ #include <asm/iommu.h> #include <asm/mach_traps.h> #include <asm/irqdomain.h> +#include <asm/realmode.h> void x86_init_noop(void) { } void __init x86_init_uint_noop(unsigned int unused) { } @@ -145,6 +146,8 @@ struct x86_platform_ops x86_platform __ro_after_init = { .get_nmi_reason = default_get_nmi_reason, .save_sched_clock_state = tsc_save_sched_clock_state, .restore_sched_clock_state = tsc_restore_sched_clock_state, + .realmode_reserve = reserve_real_mode, + .realmode_init = init_real_mode, .hyper.pin_vcpu = x86_op_int_noop, .guest = { diff --git a/arch/x86/realmode/init.c b/arch/x86/realmode/init.c index 41d7669a97ad..af565816d2ba 100644 --- a/arch/x86/realmode/init.c +++ b/arch/x86/realmode/init.c @@ -200,14 +200,18 @@ static void __init set_real_mode_permissions(void) set_memory_x((unsigned long) text_start, text_size >> PAGE_SHIFT); } -static int __init init_real_mode(void) +void __init init_real_mode(void) { if (!real_mode_header) panic("Real mode trampoline was not allocated"); setup_real_mode(); set_real_mode_permissions(); +} +static int __init do_init_real_mode(void) +{ + x86_platform.realmode_init(); return 0; } -early_initcall(init_real_mode); +early_initcall(do_init_real_mode); diff --git a/arch/x86/xen/enlighten_pv.c b/arch/x86/xen/enlighten_pv.c index 038da45f057a..8944726255c9 100644 --- a/arch/x86/xen/enlighten_pv.c +++ b/arch/x86/xen/enlighten_pv.c @@ -1266,6 +1266,8 @@ asmlinkage __visible void __init xen_start_kernel(struct start_info *si) xen_vcpu_info_reset(0); x86_platform.get_nmi_reason = xen_get_nmi_reason; + x86_platform.realmode_reserve = x86_init_noop; + x86_platform.realmode_init = x86_init_noop; x86_init.resources.memory_setup = xen_memory_setup; x86_init.irqs.intr_mode_select = x86_init_noop; |