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xen-devel
Re: [Xen-devel] Re: [PATCH] xen: Disable stack protector for irq helper
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To: |
Jeremy Fitzhardinge <jeremy@xxxxxxxx> |
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Subject: |
Re: [Xen-devel] Re: [PATCH] xen: Disable stack protector for irq helper |
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From: |
Bastian Blank <bastian@xxxxxxxxxxxx> |
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Date: |
Tue, 6 Oct 2009 00:43:10 +0200 |
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Cc: |
Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, the arch/x86 maintainers <x86@xxxxxxxxxx>, Stable Kernel <stable@xxxxxxxxxx> |
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Mon, 05 Oct 2009 15:43:01 -0700 |
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Mutt/1.5.18 (2008-05-17) |
On Mon, Oct 05, 2009 at 10:21:01AM -0700, Jeremy Fitzhardinge wrote:
> > Save all caller-saved registers on x86_32 for the paravirt callee saved
> > registers.
> That looks better, but it is still overkill. We only need to save the
> set of registers the ABI requires the callee to preserve. What
> additional register(s) gets clobbered by stack-protector that need to be
> saved?
Well, exactly the two, ecx and edx. eax is still clobbered by the return
value. Anyway, it works in praxis.
Bastian
--
Superior ability breeds superior ambition.
-- Spock, "Space Seed", stardate 3141.9
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- [Xen-devel] [PATCH] xen: Disable stack protector for irq helper, Bastian Blank
- [Xen-devel] Re: [PATCH] xen: Disable stack protector for irq helper, Jeremy Fitzhardinge
- [Xen-devel] Re: [PATCH] xen: Disable stack protector for irq helper, Bastian Blank
- [Xen-devel] Re: [PATCH] xen: Disable stack protector for irq helper, Jeremy Fitzhardinge
- Re: [Xen-devel] Re: [PATCH] xen: Disable stack protector for irq helper,
Bastian Blank <=
- Re: [Xen-devel] Re: [PATCH] xen: Disable stack protector for irq helper, Jeremy Fitzhardinge
- Re: [Xen-devel] Re: [PATCH] xen: Disable stack protector for irq helper, Bastian Blank
- Re: [Xen-devel] Re: [PATCH] xen: Disable stack protector for irq helper, Jeremy Fitzhardinge
- Re: [Xen-devel] Re: [PATCH] xen: Disable stack protector for irq helper, Bastian Blank
- Re: [Xen-devel] Re: [PATCH] xen: Disable stack protector for irq helper, Jeremy Fitzhardinge
- Re: [Xen-devel] Re: [PATCH] xen: Disable stack protector for irq helper, Ingo Molnar
- Re: [Xen-devel] Re: [PATCH] xen: Disable stack protector for irq helper, Bastian Blank
- Re: [Xen-devel] Re: [PATCH] xen: Disable stack protector for irq helper, Jeremy Fitzhardinge
- Re: [Xen-devel] Re: [PATCH] xen: Disable stack protector for irq helper, Jeremy Fitzhardinge
- [Xen-devel] [tip:x86/urgent] x86/paravirt: Use normal calling sequences for irq enable/disable, tip-bot for Jeremy Fitzhardinge
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