linux-kernel - RE: [PATCH 2/3] x86/flush_tlb: try flush_tlb_single one by one in flush_tlb

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Date:	Fri, 4 May 2012 02:24:07 +0000
From:	"Ren, Yongjie" <yongjie.ren@...el.com>
To:	"Shi, Alex" <alex.shi@...el.com>,
	"Kleen, Andi" <andi.kleen@...el.com>,
	"tim.c.chen@...ux.intel.com" <tim.c.chen@...ux.intel.com>,
	"jeremy@...p.org" <jeremy@...p.org>,
	"chrisw@...s-sol.org" <chrisw@...s-sol.org>,
	"akataria@...are.com" <akataria@...are.com>,
	"tglx@...utronix.de" <tglx@...utronix.de>,
	"mingo@...hat.com" <mingo@...hat.com>,
	"hpa@...or.com" <hpa@...or.com>,
	"rostedt@...dmis.org" <rostedt@...dmis.org>,
	"fweisbec@...il.com" <fweisbec@...il.com>
CC:	"riel@...hat.com" <riel@...hat.com>, "luto@....edu" <luto@....edu>,
	"avi@...hat.com" <avi@...hat.com>,
	"Brown, Len" <len.brown@...el.com>,
	"paul.gortmaker@...driver.com" <paul.gortmaker@...driver.com>,
	"dhowells@...hat.com" <dhowells@...hat.com>,
	"Yu, Fenghua" <fenghua.yu@...el.com>,
	"borislav.petkov@....com" <borislav.petkov@....com>,
	"yinghai@...nel.org" <yinghai@...nel.org>,
	"cpw@....com" <cpw@....com>, "steiner@....com" <steiner@....com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH 2/3] x86/flush_tlb: try flush_tlb_single one by one in
 flush_tlb_range

> Signed-off-by: Alex Shi <alex.shi@...el.com>
> ---
>  arch/x86/include/asm/paravirt.h       |    5 +-
>  arch/x86/include/asm/paravirt_types.h |    3 +-
>  arch/x86/include/asm/tlbflush.h       |   19 +++----
>  arch/x86/include/asm/uv/uv.h          |    5 +-
>  arch/x86/mm/tlb.c                     |   97
> +++++++++++++++++++++++++++------
>  arch/x86/platform/uv/tlb_uv.c         |    6 +-
>  arch/x86/xen/mmu.c                    |    9 ++--
>  include/trace/events/xen.h            |   12 +++--
>  8 files changed, 113 insertions(+), 43 deletions(-)

As the patch series touched some Xen virtualization code, I just did some simple test on Xen and KVM.
It seems these patches work fine on Xen/KVM virtual side.
I started an SMP PV guest and an SMP HVM guest on Xen, and an SMP guest on KVM.

Best Regards,
     Yongjie (Jay)

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