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Message-Id: <5037E7ED020000780008A7BD@nat28.tlf.novell.com> Date: Fri, 24 Aug 2012 20:45:32 +0100 From: "Jan Beulich" <JBeulich@...e.com> To: "Konrad Rzeszutek Wilk" <konrad.wilk@...cle.com> Cc: "Alex Shi" <alex.shi@...el.com>, <tglx@...utronix.de>, <mingo@...hat.com>, <linux-kernel@...r.kernel.org>, <hpa@...or.com> Subject: Re: [PATCH] xen: fix logical error in tlb flushing >>> On 24.08.12 at 20:17, Konrad Rzeszutek Wilk <konrad.wilk@...cle.com> wrote: > On Fri, Aug 24, 2012 at 04:16:39PM +0100, Jan Beulich wrote: >> >>> On 24.08.12 at 10:55, Alex Shi <alex.shi@...el.com> wrote: >> > While TLB_FLUSH_ALL gets passed as 'end' argument to >> > flush_tlb_others(), the Xen code was made to check its 'start' >> > parameter. That may give a incorrect op.cmd to MMUEXT_INVLPG_MULTI >> > instead of MMUEXT_TLB_FLUSH_MULTI. Then it causes some page can not >> > be flushed from TLB. >> > >> > This patch fixed this issue. >> > >> > Reported-by: Jan Beulich <jbeulich@...e.com> >> > Signed-off-by: Alex Shi <alex.shi@...el.com> >> >> Acked-by: Jan Beulich <jbeulich@...e.com> > > How can I reproduce this I don't know, I spotted this while looking at the code. > and should this also go to stable@...nel.org? No, the problem got introduced in 3.6-rc1. Jan -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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