linux-kernel - Re: [PATCH 3.16] Backport of x86/vdso: Fix vDSO syscall fallback asm constraint regression

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Date:   Tue, 29 Jan 2019 18:06:45 +0000
From:   Ben Hutchings <ben@...adent.org.uk>
To:     Matthew Whitehead <tedheadster@...il.com>,
        Andy Lutomirski <luto@...nel.org>,
        Ben Hutchings <ben.hutchings@...ethink.co.uk>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3.16] Backport of x86/vdso: Fix vDSO syscall fallback
 asm constraint regression

On Tue, 2019-01-22 at 14:51 +0000, Matthew Whitehead wrote:
> On Fri, Jan 18, 2019 at 9:07 PM tedheadster <tedheadster@...il.com>
> wrote:
> > I do not see this problem with the upstream kernel, so 3.16
> > probably
> > needs a missing upstream patch.
> 
> This was indeed fixed by Andy Lutomirski's follow-up patch "x86/vdso:
> Fix vDSO syscall fallback asm constraint regression". I tested part
> of Andy's patch and it resolved the failure.
> 
> The 3.16 LTS kernel does not have the
> tools/testing/selftests/x86/test_vdso.c code, so a partial patch is
> indicated, unless Andy wants to provide that.
> 
> Kindly backport to 3.16 LTS series.
[...]

I've queued this up now, thanks.

Ben.

-- 
Ben Hutchings
The obvious mathematical breakthrough [to break modern encryption]
would be development of an easy way to factor large prime numbers.
                                                           - Bill Gates



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