From: Jon Masters <jcm@redhat.com>
To: Will Deacon <will.deacon@arm.com>, linux-kernel@vger.kernel.org
Cc: peterz@infradead.org, benh@au1.ibm.com,
torvalds@linux-foundation.org, npiggin@gmail.com,
catalin.marinas@arm.com, linux-arm-kernel@lists.infradead.org
Subject: Re: [RFC PATCH 00/11] Avoid synchronous TLB invalidation for intermediate page-table entries on arm64
Date: Tue, 4 Sep 2018 14:38:02 -0400 [thread overview]
Message-ID: <3dd55e21-7424-071a-0f7e-d24fc2396f2a@redhat.com> (raw)
In-Reply-To: <1535125966-7666-1-git-send-email-will.deacon@arm.com>
On 08/24/2018 11:52 AM, Will Deacon wrote:
> I hacked up this RFC on the back of the recent changes to the mmu_gather
> stuff in mainline. It's had a bit of testing and it looks pretty good so
> far.
I will request the server folks go and test this. You'll probably
remember a couple of parts we've seen where aggressive walker caches
ended up (correctly) seeing stale page table entries and we had all
manner of horrifically hard to debug problems. We have some fairly nice
reproducers that were able to find this last time that we can test.
Jon.
--
Computer Architect | Sent from my Fedora powered laptop
next prev parent reply other threads:[~2018-09-04 18:38 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-24 15:52 [RFC PATCH 00/11] Avoid synchronous TLB invalidation for intermediate page-table entries on arm64 Will Deacon
2018-08-24 15:52 ` [RFC PATCH 01/11] arm64: tlb: Use last-level invalidation in flush_tlb_kernel_range() Will Deacon
2018-08-24 15:52 ` [RFC PATCH 02/11] arm64: tlb: Add DSB ISHST prior to TLBI in __flush_tlb_[kernel_]pgtable() Will Deacon
2018-08-24 17:56 ` Peter Zijlstra
2018-08-28 13:03 ` Will Deacon
2018-08-24 15:52 ` [RFC PATCH 03/11] arm64: pgtable: Implement p[mu]d_valid() and check in set_p[mu]d() Will Deacon
2018-08-24 16:15 ` Linus Torvalds
2018-08-28 12:49 ` Will Deacon
2018-08-24 15:52 ` [RFC PATCH 04/11] arm64: tlb: Justify non-leaf invalidation in flush_tlb_range() Will Deacon
2018-08-24 15:52 ` [RFC PATCH 05/11] arm64: tlbflush: Allow stride to be specified for __flush_tlb_range() Will Deacon
2018-08-24 15:52 ` [RFC PATCH 06/11] arm64: tlb: Remove redundant !CONFIG_HAVE_RCU_TABLE_FREE code Will Deacon
2018-08-24 15:52 ` [RFC PATCH 07/11] asm-generic/tlb: Guard with #ifdef CONFIG_MMU Will Deacon
2018-08-24 15:52 ` [RFC PATCH 08/11] asm-generic/tlb: Track freeing of page-table directories in struct mmu_gather Will Deacon
2018-08-27 4:44 ` Nicholas Piggin
2018-08-28 13:46 ` Peter Zijlstra
2018-08-28 13:48 ` Peter Zijlstra
2018-08-28 14:12 ` Nicholas Piggin
2018-08-24 15:52 ` [RFC PATCH 09/11] asm-generic/tlb: Track which levels of the page tables have been cleared Will Deacon
2018-08-27 7:53 ` Peter Zijlstra
2018-08-28 13:12 ` Will Deacon
2018-08-24 15:52 ` [RFC PATCH 10/11] arm64: tlb: Adjust stride and type of TLBI according to mmu_gather Will Deacon
2018-08-24 15:52 ` [RFC PATCH 11/11] arm64: tlb: Avoid synchronous TLBIs when freeing page tables Will Deacon
2018-08-24 16:20 ` [RFC PATCH 00/11] Avoid synchronous TLB invalidation for intermediate page-table entries on arm64 Linus Torvalds
2018-08-26 10:56 ` Peter Zijlstra
2018-09-04 18:38 ` Jon Masters [this message]
2018-09-05 12:28 ` Will Deacon
2018-09-07 6:36 ` Jon Masters
2018-09-13 15:53 ` Will Deacon
2018-09-13 16:53 ` Jon Masters
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