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authorAndy Lutomirski <luto@kernel.org>2017-09-07 04:54:54 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2017-09-07 05:12:57 +0200
commit1c9fe4409ce3e9c78b1ed96ee8ed699d4f03bf33 (patch)
treeb0a9e9d2d4a7062dc6f20c463109af14e56c9c7e /certs
parentx86/mm: Reinitialize TLB state on hotplug and resume (diff)
downloadlinux-1c9fe4409ce3e9c78b1ed96ee8ed699d4f03bf33.tar.xz
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x86/mm: Document how CR4.PCIDE restore works
While debugging a problem, I thought that using cr4_set_bits_and_update_boot() to restore CR4.PCIDE would be helpful. It turns out to be counterproductive. Add a comment documenting how this works. Signed-off-by: Andy Lutomirski <luto@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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