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

From: Ben Hutchings
Date: Tue Jan 29 2019 - 13:06:56 EST


On Tue, 2019-01-22 at 14:51 +0000, Matthew Whitehead wrote:
> On Fri, Jan 18, 2019 at 9:07 PM tedheadster <tedheadster@xxxxxxxxx>
> 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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