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Date: Wed, 9 Mar 2016 09:58:16 -0800
From: Andy Lutomirski <>
To: Andy Lutomirski <>
Cc: X86 ML <>, 
	"" <>, Borislav Petkov <>, 
	"" <>
Subject: Re: [RFC PATCH] x86/vdso/32: Add AT_SYSINFO cancellation helpers

On Tue, Mar 8, 2016 at 5:24 PM, Andy Lutomirski <> wrote:
> musl implements system call cancellation in an unusual but clever way.
> When a thread issues a cancellable syscall, musl issues the syscall
> through a special thunk that looks roughly like this:

FWIW, this patch fails disastrously on 64-bit kernels.  I fixed it,
but it needs kbuild changes.  I'll send those out to the maintainers.


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