diff options
| author | Kirill A. Shutemov <kirill.shutemov@linux.intel.com> | 2025-05-16 15:33:05 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2025-05-17 10:38:16 +0200 |
| commit | 7212b58d6d7133e4cd3c2295e1fb54febe284156 (patch) | |
| tree | dd60adb01af78714287ed25cddce904865ad6533 /drivers/firmware/efi/libstub | |
| parent | x86/mm/64: Make SPARSEMEM_VMEMMAP the only memory model (diff) | |
| download | linux-7212b58d6d7133e4cd3c2295e1fb54febe284156.tar.gz linux-7212b58d6d7133e4cd3c2295e1fb54febe284156.zip | |
x86/mm/64: Make 5-level paging support unconditional
Both Intel and AMD CPUs support 5-level paging, which is expected to
become more widely adopted in the future. All major x86 Linux
distributions have the feature enabled.
Remove CONFIG_X86_5LEVEL and related #ifdeffery for it to make it more readable.
Suggested-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Borislav Petkov (AMD) <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/r/20250516123306.3812286-4-kirill.shutemov@linux.intel.com
Diffstat (limited to 'drivers/firmware/efi/libstub')
| -rw-r--r-- | drivers/firmware/efi/libstub/x86-5lvl.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/firmware/efi/libstub/x86-5lvl.c b/drivers/firmware/efi/libstub/x86-5lvl.c index 77359e802181..f1c5fb45d5f7 100644 --- a/drivers/firmware/efi/libstub/x86-5lvl.c +++ b/drivers/firmware/efi/libstub/x86-5lvl.c @@ -62,7 +62,7 @@ efi_status_t efi_setup_5level_paging(void) void efi_5level_switch(void) { - bool want_la57 = IS_ENABLED(CONFIG_X86_5LEVEL) && !efi_no5lvl; + bool want_la57 = !efi_no5lvl; bool have_la57 = native_read_cr4() & X86_CR4_LA57; bool need_toggle = want_la57 ^ have_la57; u64 *pgt = (void *)la57_toggle + PAGE_SIZE; |