From: Nadav Amit <nadav.amit@gmail.com>
To: Joerg Roedel <joro@8bytes.org>, Will Deacon <will@kernel.org>
Cc: Nadav Amit <namit@vmware.com>, Jiajun Cao <caojiajun@vmware.com>,
iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org
Subject: [PATCH 0/4] iommu/amd: Enable page-selective flushes
Date: Sat, 1 May 2021 23:59:55 -0700 [thread overview]
Message-ID: <20210502070001.1559127-1-namit@vmware.com> (raw)
From: Nadav Amit <namit@vmware.com>
The previous patch, commit 268aa4548277 ("iommu/amd: Page-specific
invalidations for more than one page") was supposed to enable
page-selective IOTLB flushes on AMD.
The patch had an embaressing bug, and I apologize for it.
Analysis as for why this bug did not result in failures raised
additional issues that caused at least most of the IOTLB flushes not to
be page-selective ones.
The first patch corrects the bug from the previous patch. The next
patches enable page-selective invalidations, which were not enabled
despite the previous patch.
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Will Deacon <will@kernel.org>
Cc: Jiajun Cao <caojiajun@vmware.com>
Cc: iommu@lists.linux-foundation.org
Cc: linux-kernel@vger.kernel.org
Nadav Amit (4):
iommu/amd: Fix wrong parentheses on page-specific invalidations
iommu/amd: Selective flush on unmap
iommu/amd: Do not sync on page size changes
iommu/amd: Do not use flush-queue when NpCache is on
drivers/iommu/amd/init.c | 7 ++++++-
drivers/iommu/amd/iommu.c | 18 +++++++++++++++---
include/linux/iommu.h | 3 ++-
3 files changed, 23 insertions(+), 5 deletions(-)
--
2.25.1
next reply other threads:[~2021-05-02 7:05 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-02 6:59 Nadav Amit [this message]
2021-05-02 6:59 ` [PATCH 1/4] iommu/amd: Fix wrong parentheses on page-specific invalidations Nadav Amit
2021-05-18 9:23 ` Joerg Roedel
2021-05-31 20:11 ` Nadav Amit
2021-05-02 6:59 ` [PATCH 2/4] iommu/amd: Do not sync on page size changes Nadav Amit
2021-05-02 6:59 ` [PATCH 2/4] iommu/amd: Selective flush on unmap Nadav Amit
2021-05-02 6:59 ` [PATCH 3/4] iommu/amd: Do not sync on page size changes Nadav Amit
2021-06-01 15:59 ` Robin Murphy
2021-06-01 16:39 ` Nadav Amit
2021-06-01 17:27 ` Robin Murphy
2021-06-01 18:56 ` Nadav Amit
2021-05-02 7:00 ` [PATCH 3/4] iommu/amd: Selective flush on unmap Nadav Amit
2021-05-02 7:00 ` [PATCH 4/4] iommu/amd: Do not use flush-queue when NpCache is on Nadav Amit
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