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| author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-11-01 14:27:38 -0300 |
|---|---|---|
| committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-11-01 14:27:38 -0300 |
| commit | 1eae9639aac0f8de4d284f567ec722a822b52513 (patch) | |
| tree | 34e45a5c5e6a1033a444bea952ba9199e57f3a19 /arch/x86/platform/uv/bios_uv.c | |
| parent | 037d32aa8f748e39844d2a5b607fb063b4583843 (diff) | |
Linux-libre 4.8.6-gnupck-4.8.6-gnu
Diffstat (limited to 'arch/x86/platform/uv/bios_uv.c')
| -rw-r--r-- | arch/x86/platform/uv/bios_uv.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/arch/x86/platform/uv/bios_uv.c b/arch/x86/platform/uv/bios_uv.c index 23f2f3e41..58e152b3b 100644 --- a/arch/x86/platform/uv/bios_uv.c +++ b/arch/x86/platform/uv/bios_uv.c @@ -40,7 +40,15 @@ s64 uv_bios_call(enum uv_bios_cmd which, u64 a1, u64 a2, u64 a3, u64 a4, u64 a5) */ return BIOS_STATUS_UNIMPLEMENTED; - ret = efi_call_virt_pointer(tab, function, (u64)which, a1, a2, a3, a4, a5); + /* + * If EFI_OLD_MEMMAP is set, we need to fall back to using our old EFI + * callback method, which uses efi_call() directly, with the kernel page tables: + */ + if (unlikely(test_bit(EFI_OLD_MEMMAP, &efi.flags))) + ret = efi_call((void *)__va(tab->function), (u64)which, a1, a2, a3, a4, a5); + else + ret = efi_call_virt_pointer(tab, function, (u64)which, a1, a2, a3, a4, a5); + return ret; } EXPORT_SYMBOL_GPL(uv_bios_call); |