diff options
Diffstat (limited to 'arch/x86/include/asm/efi.h')
| -rw-r--r-- | arch/x86/include/asm/efi.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/x86/include/asm/efi.h b/arch/x86/include/asm/efi.h index 81396a9a9277dd..69effe9f03801f 100644 --- a/arch/x86/include/asm/efi.h +++ b/arch/x86/include/asm/efi.h @@ -2,6 +2,8 @@ #define _ASM_X86_EFI_H #include <asm/i387.h> +#include <asm/nospec-branch.h> + /* * We map the EFI regions needed for runtime services non-contiguously, * with preserved alignment on virtual addresses starting from -4G down @@ -37,8 +39,10 @@ extern unsigned long asmlinkage efi_call_phys(void *, ...); ({ \ efi_status_t __s; \ kernel_fpu_begin(); \ + firmware_restrict_branch_speculation_start(); \ __s = ((efi_##f##_t __attribute__((regparm(0)))*) \ efi.systab->runtime->f)(args); \ + firmware_restrict_branch_speculation_end(); \ kernel_fpu_end(); \ __s; \ }) @@ -47,8 +51,10 @@ extern unsigned long asmlinkage efi_call_phys(void *, ...); #define __efi_call_virt(f, args...) \ ({ \ kernel_fpu_begin(); \ + firmware_restrict_branch_speculation_start(); \ ((efi_##f##_t __attribute__((regparm(0)))*) \ efi.systab->runtime->f)(args); \ + firmware_restrict_branch_speculation_end(); \ kernel_fpu_end(); \ }) @@ -69,7 +75,9 @@ extern u64 asmlinkage efi_call(void *fp, ...); efi_sync_low_kernel_mappings(); \ preempt_disable(); \ __kernel_fpu_begin(); \ + firmware_restrict_branch_speculation_start(); \ __s = efi_call((void *)efi.systab->runtime->f, __VA_ARGS__); \ + firmware_restrict_branch_speculation_end(); \ __kernel_fpu_end(); \ preempt_enable(); \ __s; \ |