From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Cc: linux-mm@kvack.org, paulus@samba.org,
linuxppc-dev@lists.ozlabs.org, David Gibson <dwg@au1.ibm.com>
Subject: Re: [PATCH -V7 09/10] powerpc: Optimize hugepage invalidate
Date: Sat, 04 May 2013 07:54:04 +1000 [thread overview]
Message-ID: <1367618044.4389.117.camel@pasglop> (raw)
In-Reply-To: <87fvy351gc.fsf@linux.vnet.ibm.com>
On Sat, 2013-05-04 at 00:35 +0530, Aneesh Kumar K.V wrote:
>
> if the firmware doesn't support lockless TLBIE, we need to do locking
> at the guest side. pSeries_lpar_flush_hash_range does that.
We don't "need" to ... it's an optimization because by experience the FW
locking was horrible (and the HW locking is too).
Beware however that the hash routines can take a lock too on
"native" (instead of pHyp)...
Ben.
next prev parent reply other threads:[~2013-05-03 21:54 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-28 19:51 [PATCH -V7 00/10] THP support for PPC64 (Patchset 2) Aneesh Kumar K.V
2013-04-28 19:51 ` [PATCH -V7 01/10] powerpc/THP: Double the PMD table size for THP Aneesh Kumar K.V
2013-05-03 3:21 ` David Gibson
2013-04-28 19:51 ` [PATCH -V7 02/10] powerpc/THP: Implement transparent hugepages for ppc64 Aneesh Kumar K.V
2013-05-03 4:52 ` David Gibson
2013-05-03 8:19 ` Benjamin Herrenschmidt
2013-05-03 11:54 ` David Gibson
2013-05-03 13:00 ` Benjamin Herrenschmidt
2013-05-03 18:54 ` Aneesh Kumar K.V
2013-05-04 19:14 ` Aneesh Kumar K.V
2013-05-04 21:39 ` Benjamin Herrenschmidt
2013-05-06 1:28 ` David Gibson
2013-04-28 19:51 ` [PATCH -V7 03/10] powerpc: move find_linux_pte_or_hugepte and gup_hugepte to common code Aneesh Kumar K.V
2013-04-28 19:51 ` [PATCH -V7 04/10] powerpc: Update find_linux_pte_or_hugepte to handle transparent hugepages Aneesh Kumar K.V
2013-05-03 4:53 ` David Gibson
2013-05-03 18:58 ` Aneesh Kumar K.V
2013-05-04 6:28 ` David Gibson
2013-04-28 19:51 ` [PATCH -V7 05/10] powerpc: Replace find_linux_pte with find_linux_pte_or_hugepte Aneesh Kumar K.V
2013-05-03 4:56 ` David Gibson
2013-04-28 19:51 ` [PATCH -V7 06/10] powerpc: Update gup_pmd_range to handle transparent hugepages Aneesh Kumar K.V
2013-05-03 4:57 ` David Gibson
2013-04-28 19:51 ` [PATCH -V7 07/10] powerpc/THP: Add code to handle HPTE faults for large pages Aneesh Kumar K.V
2013-05-03 5:13 ` David Gibson
2013-04-28 19:51 ` [PATCH -V7 08/10] powerpc/THP: Enable THP on PPC64 Aneesh Kumar K.V
2013-05-03 5:15 ` David Gibson
2013-05-03 18:49 ` Aneesh Kumar K.V
2013-05-05 8:59 ` David Gibson
2013-04-28 19:51 ` [PATCH -V7 09/10] powerpc: Optimize hugepage invalidate Aneesh Kumar K.V
2013-05-03 5:28 ` David Gibson
2013-05-03 19:05 ` Aneesh Kumar K.V
2013-05-03 21:54 ` Benjamin Herrenschmidt [this message]
2013-04-28 19:51 ` [PATCH -V7 10/10] powerpc: disable assert_pte_locked Aneesh Kumar K.V
2013-05-03 5:30 ` David Gibson
2013-05-03 19:07 ` Aneesh Kumar K.V
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