linux-kernel - Re: [PATCH v3 1/4] powerpc: Remove probe_user_read

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Message-Id: <161901050534.1961279.5746860283283501781.b4-ty@ellerman.id.au>
Date:   Wed, 21 Apr 2021 23:08:25 +1000
From:   Michael Ellerman <patch-notifications@...erman.id.au>
To:     Paul Mackerras <paulus@...ba.org>, jniethe5@...il.com,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Michael Ellerman <mpe@...erman.id.au>
Cc:     linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 1/4] powerpc: Remove probe_user_read_inst()

On Wed, 14 Apr 2021 13:08:40 +0000 (UTC), Christophe Leroy wrote:
> Its name comes from former probe_user_read() function.
> That function is now called copy_from_user_nofault().
> 
> probe_user_read_inst() uses copy_from_user_nofault() to read only
> a few bytes. It is suboptimal.
> 
> It does the same as get_user_inst() but in addition disables
> page faults.
> 
> [...]

Applied to powerpc/next.

[1/4] powerpc: Remove probe_user_read_inst()
      https://git.kernel.org/powerpc/c/6ac7897f08e04b47df3955d7691652e9d12d4068
[2/4] powerpc: Make probe_kernel_read_inst() common to PPC32 and PPC64
      https://git.kernel.org/powerpc/c/6449078d50111c839bb7156c3b99b9def80eed42
[3/4] powerpc: Rename probe_kernel_read_inst()
      https://git.kernel.org/powerpc/c/41d6cf68b5f611934bcc6a7d4a1a2d9bfd04b420
[4/4] powerpc: Move copy_from_kernel_nofault_inst()
      https://git.kernel.org/powerpc/c/39352430aaa05fbe4ba710231c70b334513078f2

cheers