Messages in this thread | | | From | Michael Ellerman <> | Subject | Re: [PATCH] powerpc/32s: Handle PROTFAULT in hash_page() also for CONFIG_PPC_KUAP | Date | Tue, 15 Dec 2020 21:48:54 +1100 (AEDT) |
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On Mon, 16 Nov 2020 16:09:31 +0000 (UTC), Christophe Leroy wrote: > On hash 32 bits, handling minor protection faults like unsetting > dirty flag is heavy if done from the normal page_fault processing, > because it implies hash table software lookup for flushing the entry > and then a DSI is taken anyway to add the entry back. > > When KUAP was implemented, as explained in commit a68c31fc01ef > ("powerpc/32s: Implement Kernel Userspace Access Protection"), > protection faults has been diverted from hash_page() because > hash_page() was not able to identify a KUAP fault. > > [...]
Applied to powerpc/next.
[1/1] powerpc/32s: Handle PROTFAULT in hash_page() also for CONFIG_PPC_KUAP https://git.kernel.org/powerpc/c/1b03e71ff6f2bd10b45a0128ce76e0e42014a44c
cheers
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