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SubjectRe: [RFC][PATCH] x86: add memory clobber in switch_to()

* Vegard Nossum <> wrote:

> There are more places which have segment register reloads without
> adding memory clobbers. Should we fix them up? Here's one of them:

yes, i think so.

> >From 5f135687f7730fbdd979b6fb408fd3ca08a0a678 Mon Sep 17 00:00:00 2001
> From: Vegard Nossum <>
> Date: Sun, 14 Sep 2008 18:53:22 +0200
> Subject: [PATCH] x86: add memory clobber in switch_to()
> Segment registers are reloaded, so we should add a memory clobber. The
> generated assembly code is identical in my tests, but this doesn't
> mean it is necessarily true for all configurations/compilers.

applied to tip/x86/core, thanks Vegard.


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