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Re: [Qemu-ppc] [PATCH] linux-user/ppc: Implement swapcontext syscall

From: Richard Henderson
Subject: Re: [Qemu-ppc] [PATCH] linux-user/ppc: Implement swapcontext syscall
Date: Thu, 19 Jul 2018 08:24:26 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.8.0

On 07/19/2018 06:05 AM, Alex Bennée wrote:
> I'm confused by the lock_user_struct/unlock_user_struct which AFAICT are
> basically access checks. Is there an implied locking I'm missing?

I have no idea why those have that name.  There's no lock,
just a validation of the underlying pages and a transform to
the corresponding host address.


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