Messages in this thread | | | From | "Ren, Yongjie" <> | Subject | RE: [PATCH] xen: fix logical error in tlb flushing | Date | Wed, 5 Sep 2012 05:41:37 +0000 |
| |
> -----Original Message----- > From: Shi, Alex > Sent: Wednesday, September 05, 2012 1:35 PM > To: Jan Beulich > Cc: Konrad Rzeszutek Wilk; tglx@linutronix.de; mingo@redhat.com; > linux-kernel@vger.kernel.org; hpa@zytor.com; Ren, Yongjie > Subject: Re: [PATCH] xen: fix logical error in tlb flushing > > On 08/25/2012 03:45 AM, Jan Beulich wrote: > > >>>> On 24.08.12 at 20:17, Konrad Rzeszutek Wilk > <konrad.wilk@oracle.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@intel.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@suse.com> > >>>> Signed-off-by: Alex Shi <alex.shi@intel.com> > >>> > >>> Acked-by: Jan Beulich <jbeulich@suse.com> > Tested-by: Yongjie Ren <yongjie.ren@intel.com>
> > CC to Yongjie, > Could you like to test this patch on PV guest > Xen Dom0 and a PV guest kernel with this patch can boot up correctly.
| |