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| author | Andy Lutomirski <luto@kernel.org> | 2021-02-10 05:33:46 +0300 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2021-02-10 20:39:23 +0300 |
| commit | c46f52231e79af025e2c89e889d69ec20a4c024f (patch) | |
| tree | edd2bdcce0593d181156fa6fb744e1ddc3fe5610 /arch/x86/include/asm/efi.h | |
| parent | ca247283781d754216395a41c5e8be8ec79a5f1c (diff) | |
| download | linux-c46f52231e79af025e2c89e889d69ec20a4c024f.tar.xz | |
x86/{fault,efi}: Fix and rename efi_recover_from_page_fault()
efi_recover_from_page_fault() doesn't recover -- it does a special EFI
mini-oops. Rename it to make it clear that it crashes.
While renaming it, I noticed a blatant bug: a page fault oops in a
different thread happening concurrently with an EFI runtime service call
would be misinterpreted as an EFI page fault. Fix that.
This isn't quite exact. The situation could be improved by using a
special CS for calls into EFI.
[ bp: Massage commit message and simplify in interrupt check. ]
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/f43b1e80830dc78ed60ed8b0826f4f189254570c.1612924255.git.luto@kernel.org
Diffstat (limited to 'arch/x86/include/asm/efi.h')
| -rw-r--r-- | arch/x86/include/asm/efi.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/include/asm/efi.h b/arch/x86/include/asm/efi.h index c98f78330b09..4b7706ddd8b6 100644 --- a/arch/x86/include/asm/efi.h +++ b/arch/x86/include/asm/efi.h @@ -150,7 +150,7 @@ extern void __init efi_apply_memmap_quirks(void); extern int __init efi_reuse_config(u64 tables, int nr_tables); extern void efi_delete_dummy_variable(void); extern void efi_switch_mm(struct mm_struct *mm); -extern void efi_recover_from_page_fault(unsigned long phys_addr); +extern void efi_crash_gracefully_on_page_fault(unsigned long phys_addr); extern void efi_free_boot_services(void); /* kexec external ABI */ |