The following commit has been merged into the x86/cpu branch of tip:
Commit-ID: 0bafc51babe2344e9b0ff6629a4f044727728349
Gitweb: https://git.kernel.org/tip/0bafc51babe2344e9b0ff6629a4f044727728349
Author: Juergen Gross <jgross@xxxxxxxx>
AuthorDate: Fri, 04 Nov 2022 08:26:58 +01:00
Committer: Borislav Petkov <bp@xxxxxxx>
CommitterDate: Tue, 22 Nov 2022 16:11:57 +01:00
x86/cpu: Remove unneeded 64-bit dependency in arch_enter_from_user_mode()
The check for 64-bit mode when testing X86_FEATURE_XENPV isn't needed,
as Xen PV guests are no longer supported in 32-bit mode, see
a13f2ef168cb ("x86/xen: remove 32-bit Xen PV guest support").
While at it switch from boot_cpu_has() to cpu_feature_enabled().
Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
Signed-off-by: Borislav Petkov <bp@xxxxxxx>
Acked-by: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20221104072701.20283-3-jgross@xxxxxxxx
---
arch/x86/include/asm/entry-common.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/x86/include/asm/entry-common.h b/arch/x86/include/asm/entry-common.h
index 674ed46..1179038 100644
--- a/arch/x86/include/asm/entry-common.h
+++ b/arch/x86/include/asm/entry-common.h
@@ -24,8 +24,8 @@ static __always_inline void arch_enter_from_user_mode(struct pt_regs *regs)
/*
* For !SMAP hardware we patch out CLAC on entry.
*/
- if (boot_cpu_has(X86_FEATURE_SMAP) ||
- (IS_ENABLED(CONFIG_64BIT) && boot_cpu_has(X86_FEATURE_XENPV)))
+ if (cpu_feature_enabled(X86_FEATURE_SMAP) ||
+ cpu_feature_enabled(X86_FEATURE_XENPV))
mask |= X86_EFLAGS_AC;
WARN_ON_ONCE(flags & mask);
|