On 2022/5/12 下午7:59, Jason Gunthorpe wrote:
On Thu, May 12, 2022 at 07:57:26PM +0800, zhangfei@foxmail.com wrote:
On 2022/5/12 下午7:32, Jason Gunthorpe via iommu wrote:
On Thu, May 12, 2022 at 03:07:09PM +0800, Zhangfei Gao wrote:
I can't help feeling a little wary about removing
On 2022/5/12 下午7:32, Jason Gunthorpe via iommu wrote:
On Thu, May 12, 2022 at 03:07:09PM +0800, Zhangfei Gao wrote:
I can't help feeling a little wary about removing this until IOMMUFD
can actually offer a functional replacement - is it in the way of
anything upcoming?
From an upstream pers
Hi, Jean
On 2022/4/26 下午6:04, Jean-Philippe Brucker wrote:
We currently call arm64_mm_context_put() without holding a reference to
the mm, which can result in use-after-free. Call mmgrab()/mmdrop() to
ensure the mm only gets freed after we unpinned the ASID.
Fixes: 32784a9562fb ("iommu/arm-smmu
Hi, Dave
On 2022/4/12 下午11:35, Dave Hansen wrote:
On 4/12/22 08:10, Jean-Philippe Brucker wrote:
I wonder if the Intel and ARM IOMMU code differ in the way they keep
references to the mm, or if this affects Intel as well, but we just
haven't tested the code enough.
The Arm code was written exp
Hi, Jean
On 2022/4/22 下午11:50, Jean-Philippe Brucker wrote:
On Fri, Apr 22, 2022 at 09:15:01PM +0800, zhangfei@foxmail.com wrote:
I'm trying to piece together what happens from the kernel point of view.
* master process with mm A opens a queue fd through uacce, which
Hi, Jean
On 2022/4/22 下午6:11, Jean-Philippe Brucker wrote:
On Fri, Apr 22, 2022 at 05:03:10PM +0800, zhangfei@foxmail.com wrote:
[...]
Have tested, still got some issue with our openssl-engine.
1. If openssl-engine does not register rsa, nginx works well.
2. If openssl-engine register
Hi, Jean
On 2022/4/21 下午2:47, zhangfei@foxmail.com wrote:
On 2022/4/21 上午12:45, Jean-Philippe Brucker wrote:
Hi,
On Fri, Apr 15, 2022 at 02:51:08AM -0700, Fenghua Yu wrote:
From a6444e1e5bd8076f5e5c5e950d3192de327f0c9c Mon Sep 17 00:00:00 2001
From: Fenghua Yu
Date: Fri, 15 Apr 2022
On 2022/4/21 上午12:45, Jean-Philippe Brucker wrote:
Hi,
On Fri, Apr 15, 2022 at 02:51:08AM -0700, Fenghua Yu wrote:
From a6444e1e5bd8076f5e5c5e950d3192de327f0c9c Mon Sep 17 00:00:00 2001
From: Fenghua Yu
Date: Fri, 15 Apr 2022 00:51:33 -0700
Subject: [RFC PATCH] iommu/sva: Fix PASID use-afte
On 2022/4/19 上午2:14, Jacob Pan wrote:
Hi zhangfei@foxmail.com,
On Sat, 16 Apr 2022 09:43:07 +0800, "zhangfei@foxmail.com"
wrote:
On 2022/4/16 上午5:00, Jacob Pan wrote:
Hi zhangfei@foxmail.com,
On Fri, 15 Apr 2022 19:52:03 +0800, "zhangfei....@foxmail.com"
On 2022/4/16 上午5:00, Jacob Pan wrote:
Hi zhangfei@foxmail.com,
On Fri, 15 Apr 2022 19:52:03 +0800, "zhangfei@foxmail.com"
wrote:
A PASID might be still used even though it is freed on mm exit.
process A:
sva_bind();
ioasid_alloc() = N; // Get PASID N
On 2022/4/15 下午8:37, Fenghua Yu wrote:
Hi, Zhangfei,
On Fri, Apr 15, 2022 at 07:52:03PM +0800, zhangfei@foxmail.com wrote:
On 2022/4/15 下午6:50, Fenghua Yu wrote:
Hi, Zhangfei,
On Fri, Apr 15, 2022 at 06:14:09PM +0800, zhangfei@foxmail.com wrote:
I download this patch from:
https
On 2022/4/15 下午6:50, Fenghua Yu wrote:
Hi, Zhangfei,
On Fri, Apr 15, 2022 at 06:14:09PM +0800, zhangfei@foxmail.com wrote:
On 2022/4/15 下午5:51, Fenghua Yu wrote:
On Thu, Apr 14, 2022 at 06:08:09PM +0800, zhangfei@foxmail.com wrote:
On 2022/4/12 下午11:35, zhangfei@foxmail.com
On 2022/4/15 下午5:51, Fenghua Yu wrote:
On Thu, Apr 14, 2022 at 06:08:09PM +0800, zhangfei@foxmail.com wrote:
On 2022/4/12 下午11:35, zhangfei@foxmail.com wrote:
Hi, Fenghua
On 2022/4/12 下午9:41, Fenghua Yu wrote:
Hi, Zhangfei,
On Tue, Apr 12, 2022 at 03:04:09PM +0800, zhangfei
On 2022/4/12 下午11:35, zhangfei@foxmail.com wrote:
Hi, Fenghua
On 2022/4/12 下午9:41, Fenghua Yu wrote:
Hi, Zhangfei,
On Tue, Apr 12, 2022 at 03:04:09PM +0800, zhangfei@foxmail.com
wrote:
On 2022/4/11 下午10:52, Dave Hansen wrote:
On 4/11/22 07:44, zhangfei@foxmail.com wrote:
On
Hi, Fenghua
On 2022/4/12 下午9:41, Fenghua Yu wrote:
Hi, Zhangfei,
On Tue, Apr 12, 2022 at 03:04:09PM +0800, zhangfei@foxmail.com wrote:
On 2022/4/11 下午10:52, Dave Hansen wrote:
On 4/11/22 07:44, zhangfei@foxmail.com wrote:
On 2022/4/11 下午10:36, Dave Hansen wrote:
On 4/11/22 07:20
On 2022/4/11 下午10:52, Dave Hansen wrote:
On 4/11/22 07:44, zhangfei@foxmail.com wrote:
On 2022/4/11 下午10:36, Dave Hansen wrote:
On 4/11/22 07:20, zhangfei@foxmail.com wrote:
Is there nothing before this call trace? Usually there will be at least
some warning text.
I added
On 2022/4/11 下午10:52, Dave Hansen wrote:
On 4/11/22 07:44, zhangfei@foxmail.com wrote:
On 2022/4/11 下午10:36, Dave Hansen wrote:
On 4/11/22 07:20, zhangfei@foxmail.com wrote:
Is there nothing before this call trace? Usually there will be at least
some warning text.
I added
On 2022/4/11 下午10:36, Dave Hansen wrote:
On 4/11/22 07:20, zhangfei@foxmail.com wrote:
Is there nothing before this call trace? Usually there will be at least
some warning text.
I added dump_stack() in ioasid_free.
Hold on a sec, though...
What's the *problem* here? Did some
On 2022/4/11 下午10:10, Dave Hansen wrote:
On 4/11/22 07:00, Zhangfei Gao wrote:
with this patchset, each time after sbin/nginx, ioasid is freed
immediately. lynx test will alloc the same ioasid=1.
That doesn't seem right. Isn't 'sbin/nginx' still running when lynx
runs? How can they get the
Hi, Jason
On 2022/3/19 上午1:27, Jason Gunthorpe via iommu wrote:
This is the remainder of the IOAS data structure. Provide an object called
an io_pagetable that is composed of iopt_areas pointing at iopt_pages,
along with a list of iommu_domains that mirror the IOVA to PFN map.
At the top this i
Hi, Bjorn
On 2020/12/18 上午4:38, Bjorn Helgaas wrote:
The principles are:
- I don't want to have to update a quirk for every new Device ID
that needs this.
Hi Bjorn and Zhangfei,
We plan to use ATS/PRI to support SVA in future PCI devices. However, for
current devices, we need to add
On 2020/1/10 下午6:10, Jonathan Cameron wrote:
On Fri, 10 Jan 2020 14:55:39 +0800
"zhangfei@foxmail.com" wrote:
On 2020/1/10 上午1:38, Jonathan Cameron wrote:
On Mon, 16 Dec 2019 11:08:15 +0800
Zhangfei Gao wrote:
From: Kenneth Lee
Uacce (Unified/User-space-acces
On 2020/1/10 下午6:08, Jonathan Cameron wrote:
On Fri, 10 Jan 2020 15:03:25 +0800
zhangfei wrote:
On 2020/1/10 上午1:49, Jonathan Cameron wrote:
On Mon, 16 Dec 2019 11:08:13 +0800
Zhangfei Gao wrote:
Uacce (Unified/User-space-access-intended Accelerator Framework) targets to
provide Shared
On 2020/1/10 上午1:38, Jonathan Cameron wrote:
On Mon, 16 Dec 2019 11:08:15 +0800
Zhangfei Gao wrote:
From: Kenneth Lee
Uacce (Unified/User-space-access-intended Accelerator Framework) targets to
provide Shared Virtual Addressing (SVA) between accelerators and processes.
So accelerator can a
On 2019/12/10 上午2:05, Jean-Philippe Brucker wrote:
Add support for Substream ID and PASIDs to the SMMUv3 driver.
Changes since v2 [1]:
* Split preparatory work into patches 5, 6, 8 and 9.
* Added patch 1. Not strictly relevant, but since we're moving the DMA
allocations and adding a new on
On 2019/7/11 下午9:56, Eric Auger wrote:
This series brings the VFIO part of HW nested paging support
in the SMMUv3.
The series depends on:
[PATCH v9 00/14] SMMUv3 Nested Stage Setup (IOMMU part)
(https://www.spinics.net/lists/kernel/msg3187714.html)
3 new IOCTLs are introduced that allow the u
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