linux-kernel - Re: (subset) [PATCH v3 1/3] powerpc: Remove MSR_PR check in interrupt_exit_{user/kernel}

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <163007018206.52768.16263402363741709388.b4-ty@ellerman.id.au>
Date:   Fri, 27 Aug 2021 23:16:22 +1000
From:   Michael Ellerman <patch-notifications@...erman.id.au>
To:     Christophe Leroy <christophe.leroy@...roup.eu>,
        Paul Mackerras <paulus@...ba.org>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Michael Ellerman <mpe@...erman.id.au>, npiggin@...il.com
Cc:     linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: (subset) [PATCH v3 1/3] powerpc: Remove MSR_PR check in interrupt_exit_{user/kernel}_prepare()

On Mon, 23 Aug 2021 08:24:20 +0000 (UTC), Christophe Leroy wrote:
> In those hot functions that are called at every interrupt, any saved
> cycle is worth it.
> 
> interrupt_exit_user_prepare() and interrupt_exit_kernel_prepare() are
> called from three places:
> - From entry_32.S
> - From interrupt_64.S
> - From interrupt_exit_user_restart() and interrupt_exit_kernel_restart()
> 
> [...]

Applied to powerpc/next.

[2/3] powerpc: Refactor verification of MSR_RI
      https://git.kernel.org/powerpc/c/806c0e6e7e97adc17389c8dc1f52d4736f49299b

cheers