Re: [v3, 1/5] powerpc/mm: Ensure change_page_attr() doesn't invalidate pinned TLBs

From	Michael Ellerman <patch-notifications@ellerman.id.au>
Newsgroups	linux.kernel
Subject	Re: [v3, 1/5] powerpc/mm: Ensure change_page_attr() doesn't invalidate pinned TLBs
Date	2017-08-16 14:30 +0200
Message-ID	<uf5Cq-70D-19@gated-at.bofh.it> (permalink)
References	<ua2lR-281-45@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On Wed, 2017-08-02 at 13:51:01 UTC, Christophe Leroy wrote:
> __change_page_attr() uses flush_tlb_page().
> flush_tlb_page() uses tlbie instruction, which also invalidates
> pinned TLBs, which is not what we expect.
> 
> This patch modifies the implementation to use flush_tlb_kernel_range()
> instead. This will make use of tlbia which will preserve pinned TLBs.
> 
> Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>

Series applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/e611939fc8ec13387018df88083de7

cheers

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Re: [v3, 1/5] powerpc/mm: Ensure change_page_attr() doesn't invalidate pinned TLBs Michael Ellerman <patch-notifications@ellerman.id.au> - 2017-08-16 14:30 +0200

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