| commit | fe5cb75fd2dd51746fd391c7f6d18485e6a44f76 | |
| author | Hugh Dickins <hughd@google.com> | |
| Sun, 5 Nov 2017 01:43:06 +0000 (4 18:43 -0700) | ||
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | |
| Fri, 5 Jan 2018 14:46:35 +0000 (5 15:46 +0100) | ||
| tree | 3d39e1642a191df61177da5eec32c20f683d2294 | treesnapshot (tar.gz zip) |
| parent | b72c26e911c566c78743d7973103925007d103c7 | commitdiff |
kaiser: kaiser_flush_tlb_on_return_to_user() check PCID
Let kaiser_flush_tlb_on_return_to_user() do the X86_FEATURE_PCID
check, instead of each caller doing it inline first: nobody needs
to optimize for the noPCID case, it's clearer this way, and better
suits later changes. Replace those no-op X86_CR3_PCID_KERN_FLUSH lines
by a BUILD_BUG_ON() in load_new_mm_cr3(), in case something changes.
Signed-off-by: Hugh Dickins <hughd@google.com>
Acked-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Let kaiser_flush_tlb_on_return_to_user() do the X86_FEATURE_PCID
check, instead of each caller doing it inline first: nobody needs
to optimize for the noPCID case, it's clearer this way, and better
suits later changes. Replace those no-op X86_CR3_PCID_KERN_FLUSH lines
by a BUILD_BUG_ON() in load_new_mm_cr3(), in case something changes.
Signed-off-by: Hugh Dickins <hughd@google.com>
Acked-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| arch/x86/include/asm/tlbflush.h | diffblobblamehistory | |
| arch/x86/mm/kaiser.c | diffblobblamehistory | |
| arch/x86/mm/tlb.c | diffblobblamehistory |