From: Alex Shi <lkml.alex@gmail.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Minchan Kim <minchan@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Nitin Gupta <ngupta@vflare.org>,
Seth Jennings <sjenning@linux.vnet.ibm.com>,
Dan Magenheimer <dan.magenheimer@oracle.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Tejun Heo <tj@kernel.org>,
David Howells <dhowells@redhat.com>,
x86@kernel.org, Nick Piggin <npiggin@gmail.com>,
Alex Shi <alex.shi@intel.com>
Subject: Re: [PATCH v2 3/3] x86: Support local_flush_tlb_kernel_range
Date: Sat, 19 May 2012 08:13:48 +0800 [thread overview]
Message-ID: <CAGjg+kEu0e=JyMz8F9Wxc36A-TQJ0iSW8LX6d9duZiz172e6AA@mail.gmail.com> (raw)
In-Reply-To: <1337267329.4281.32.camel@twins>
On Thu, May 17, 2012 at 11:08 PM, Peter Zijlstra <peterz@infradead.org> wrote:
> On Thu, 2012-05-17 at 16:51 +0200, Peter Zijlstra wrote:
>>
>> Also, does it even work if the range happens to be backed by huge pages?
>> IIRC we try and do the identity map with large pages wherever possible.
>
> OK, the Intel SDM seems to suggest it will indeed invalidate ANY mapping
> to that linear address, which would include 2M and 1G pages.
As for as I know, the 1GB TLB fold into 2MB now, and 2MB page still
maybe fold into 4K page in TLB flush. We are tracking this.
>
> --
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next prev parent reply other threads:[~2012-05-19 0:13 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-16 2:05 [PATCH v2 1/3] zsmalloc: support zsmalloc to ARM, MIPS, SUPERH Minchan Kim
2012-05-16 2:05 ` [PATCH v2 2/3] remove dependency with x86 Minchan Kim
2012-05-16 17:11 ` Seth Jennings
2012-05-17 8:06 ` Minchan Kim
2012-05-16 2:05 ` [PATCH v2 3/3] x86: Support local_flush_tlb_kernel_range Minchan Kim
2012-05-17 8:11 ` Minchan Kim
2012-05-17 14:46 ` Greg Kroah-Hartman
2012-05-18 8:35 ` Minchan Kim
2012-05-17 14:51 ` Peter Zijlstra
2012-05-17 15:08 ` Peter Zijlstra
2012-05-19 0:13 ` Alex Shi [this message]
2012-05-18 8:36 ` Minchan Kim
2012-06-15 15:13 ` Seth Jennings
2012-06-15 16:35 ` Dan Magenheimer
2012-06-15 16:45 ` Nitin Gupta
2012-06-15 17:29 ` Dan Magenheimer
2012-06-15 19:07 ` Seth Jennings
2012-06-15 19:39 ` Dan Magenheimer
2012-06-15 19:53 ` Nitin Gupta
2012-06-15 20:13 ` Dan Magenheimer
2012-06-15 21:23 ` Nitin Gupta
2012-06-15 23:26 ` Seth Jennings
2012-06-15 16:48 ` Seth Jennings
2012-05-16 7:28 ` [PATCH v2 1/3] zsmalloc: support zsmalloc to ARM, MIPS, SUPERH Guan Xuetao
2012-05-17 0:07 ` Minchan Kim
2012-05-17 0:56 ` Guan Xuetao
2012-05-17 8:04 ` Minchan Kim
2012-05-18 1:45 ` Guan Xuetao
2012-05-18 8:38 ` Minchan Kim
2012-05-17 8:32 ` Paul Mundt
2012-05-17 9:06 ` Minchan Kim
2012-05-17 9:19 ` Paul Mundt
2012-05-17 9:08 ` Minchan Kim
2012-05-23 20:51 ` Seth Jennings
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