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Re: [Qemu-devel] [PATCH 0/2] vdso for x86_64-linux-user

From: Richard Henderson
Subject: Re: [Qemu-devel] [PATCH 0/2] vdso for x86_64-linux-user
Date: Wed, 24 Jul 2013 06:34:54 -1000
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130625 Thunderbird/17.0.7

On 07/23/2013 11:15 AM, Peter Maydell wrote:
> On 23 July 2013 21:27, Richard Henderson <address@hidden> wrote:
>> This is a refresh of a patch I wrote in 2010, and have re-posted every
>> 6 months thereafter.  To my knowledge, it has never been reviewed.
>> It supplies a replacement for the required x86-64 vdso.  Anyone trying
>> to emulate x86_64-linux on a host other than same will quickly run into
>> the lack of a gettimeofday syscall, which glibc assumes is always
>> provided by the vdso.
> Do we really need to mess with building an x86 shared object
> and pulling it in, rather than the kind of ad-hoc way we
> handle the ARM commpage?

Isn't the arm ad-hoc really the much larger and uglier hack?


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