Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 6fb89569 authored by Kirill A. Shutemov's avatar Kirill A. Shutemov Committed by Linus Torvalds
Browse files

x86/cpufeature: Add 5-level paging detection 



Look for 'la57' in /proc/cpuinfo to see if your machine supports 5-level
paging.

Signed-off-by: default avatarKirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: default avatarMichal Hocko <mhocko@suse.com>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent ea6200e8

arch/x86/include/asm/cpufeatures.h

+2 −1
Original line number Diff line number Diff line
@@ -289,6 +289,7 @@ 
#define X86_FEATURE_PKU		(16*32+ 3) /* Protection Keys for Userspace */

#define X86_FEATURE_OSPKE	(16*32+ 4) /* OS Protection Keys Enable */

#define X86_FEATURE_AVX512_VPOPCNTDQ (16*32+14) /* POPCNT for vectors of DW/QW */

#define X86_FEATURE_LA57	(16*32+16) /* 5-level page tables */

#define X86_FEATURE_RDPID	(16*32+22) /* RDPID instruction */



/* AMD-defined CPU features, CPUID level 0x80000007 (ebx), word 17 */