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| author | Dave Hansen <dave.hansen@linux.intel.com> | 2018-04-06 13:55:15 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2018-04-12 09:05:59 +0200 |
| commit | 0f561fce4d6979a50415616896512f87a6d1d5c8 (patch) | |
| tree | c65424a590f9a405e617cf042275443b53349e75 /arch/x86/mm/init.c | |
| parent | 639d6aafe437a7464399d2a77d006049053df06f (diff) | |
| download | linux-0f561fce4d6979a50415616896512f87a6d1d5c8.tar.gz linux-0f561fce4d6979a50415616896512f87a6d1d5c8.tar.bz2 linux-0f561fce4d6979a50415616896512f87a6d1d5c8.zip | |
x86/pti: Enable global pages for shared areas
The entry/exit text and cpu_entry_area are mapped into userspace and
the kernel. But, they are not _PAGE_GLOBAL. This creates unnecessary
TLB misses.
Add the _PAGE_GLOBAL flag for these areas.
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Kees Cook <keescook@google.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Nadav Amit <namit@vmware.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-mm@kvack.org
Link: http://lkml.kernel.org/r/20180406205515.2977EE7D@viggo.jf.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/mm/init.c')
0 files changed, 0 insertions, 0 deletions