Messages in this thread | | | From | Michael Ellerman <> | Subject | Re: [PATCH v2] powerpc/32s: Fix random crashes by adding isync() after locking/unlocking KUEP | Date | Fri, 27 Aug 2021 23:25:00 +1000 |
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On Wed, 18 Aug 2021 06:49:29 +0000 (UTC), Christophe Leroy wrote: > Commit b5efec00b671 ("powerpc/32s: Move KUEP locking/unlocking in C") > removed the 'isync' instruction after adding/removing NX bit in user > segments. The reasoning behind this change was that when setting the > NX bit we don't mind it taking effect with delay as the kernel never > executes text from userspace, and when clearing the NX bit this is > to return to userspace and then the 'rfi' should synchronise the > context. > > [...]
Applied to powerpc/fixes.
[1/1] powerpc/32s: Fix random crashes by adding isync() after locking/unlocking KUEP https://git.kernel.org/powerpc/c/ef486bf448a057a6e2d50e40ae879f7add6585da
cheers
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