Messages in this thread | | | Subject | Re: [PATCH 02/23] x86, kaiser: do not set _PAGE_USER for init_mm page tables | From | Dave Hansen <> | Date | Wed, 1 Nov 2017 14:52:48 -0700 |
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On 11/01/2017 02:28 PM, Thomas Gleixner wrote: > On Wed, 1 Nov 2017, Andy Lutomirski wrote: >> The vsyscall page is _PAGE_USER and lives in init_mm via the fixmap. > > Groan, forgot about that abomination, but still there is no point in having > it marked PAGE_USER in the init_mm at all, kaiser or not.
So shouldn't this patch effectively make the vsyscall page unusable? Any idea why that didn't show up in any of the x86 selftests?
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