From: Fenghua Yu <fenghua.yu@intel.com>
To: "Thomas Gleixner" <tglx@linutronix.de>,
"Ingo Molnar" <mingo@redhat.com>,
"Borislav Petkov" <bp@alien8.de>, "H Peter Anvin" <hpa@zytor.com>,
"David Woodhouse" <dwmw2@infradead.org>,
"Lu Baolu" <baolu.lu@linux.intel.com>,
"Frederic Barrat" <fbarrat@linux.ibm.com>,
"Andrew Donnellan" <ajd@linux.ibm.com>,
"Felix Kuehling" <Felix.Kuehling@amd.com>,
"Joerg Roedel" <joro@8bytes.org>,
"Dave Hansen" <dave.hansen@intel.com>,
"Tony Luck" <tony.luck@intel.com>,
"Ashok Raj" <ashok.raj@intel.com>,
"Jacob Jun Pan" <jacob.jun.pan@intel.com>,
"Dave Jiang" <dave.jiang@intel.com>,
"Yu-cheng Yu" <yu-cheng.yu@intel.com>,
"Sohil Mehta" <sohil.mehta@intel.com>,
"Ravi V Shankar" <ravi.v.shankar@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>, x86 <x86@kernel.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
amd-gfx <amd-gfx@lists.freedesktop.org>,
iommu@lists.linux-foundation.org,
linuxppc-dev <linuxppc-dev@lists.ozlabs.org>
Subject: [PATCH v2 08/12] mm: Define pasid in mm
Date: Fri, 12 Jun 2020 17:41:29 -0700 [thread overview]
Message-ID: <1592008893-9388-9-git-send-email-fenghua.yu@intel.com> (raw)
In-Reply-To: <1592008893-9388-1-git-send-email-fenghua.yu@intel.com>
PASID is shared by all threads in a process. So the logical place to keep
track of it is in the "mm". Both ARM and X86 need to use the PASID in the
"mm".
Suggested-by: Christoph Hellwig <hch@infradeed.org>
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Reviewed-by: Tony Luck <tony.luck@intel.com>
---
v2:
- This new patch moves "pasid" from x86 specific mm_context_t to generic
struct mm_struct per Christopher's comment: https://lore.kernel.org/linux-iommu/20200414170252.714402-1-jean-philippe@linaro.org/T/#mb57110ffe1aaa24750eeea4f93b611f0d1913911
- Jean-Philippe Brucker released a virtually same patch. I still put this
patch in the series for better review. The upstream kernel only needs one
of the two patches eventually.
https://lore.kernel.org/linux-iommu/20200519175502.2504091-2-jean-philippe@linaro.org/
- Change CONFIG_IOASID to CONFIG_PCI_PASID (Ashok)
include/linux/mm_types.h | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index 64ede5f150dc..5778db3aa42d 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -538,6 +538,10 @@ struct mm_struct {
atomic_long_t hugetlb_usage;
#endif
struct work_struct async_put_work;
+
+#ifdef CONFIG_PCI_PASID
+ unsigned int pasid;
+#endif
} __randomize_layout;
/*
--
2.19.1
_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
next prev parent reply other threads:[~2020-06-13 0:42 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-13 0:41 [PATCH v2 00/12] x86: tag application address space for devices Fenghua Yu
2020-06-13 0:41 ` [PATCH v2 01/12] iommu: Change type of pasid to unsigned int Fenghua Yu
2020-06-13 0:41 ` [PATCH v2 02/12] ocxl: " Fenghua Yu
2020-06-18 8:05 ` Frederic Barrat
2020-06-18 15:37 ` Fenghua Yu
2020-06-18 16:56 ` Frederic Barrat
2020-06-13 0:41 ` [PATCH v2 03/12] iommu/vt-d: Change flags type to unsigned int in binding mm Fenghua Yu
2020-06-13 0:41 ` [PATCH v2 04/12] docs: x86: Add documentation for SVA (Shared Virtual Addressing) Fenghua Yu
2020-06-13 12:17 ` Lu Baolu
2020-06-15 23:16 ` Fenghua Yu
2020-06-13 0:41 ` [PATCH v2 05/12] x86/cpufeatures: Enumerate ENQCMD and ENQCMDS instructions Fenghua Yu
2020-06-13 0:41 ` [PATCH v2 06/12] x86/fpu/xstate: Add supervisor PASID state for ENQCMD feature Fenghua Yu
2020-06-13 0:41 ` [PATCH v2 07/12] x86/msr-index: Define IA32_PASID MSR Fenghua Yu
2020-06-13 0:41 ` Fenghua Yu [this message]
2020-06-16 8:28 ` [PATCH v2 08/12] mm: Define pasid in mm Jean-Philippe Brucker
2020-06-16 15:11 ` Fenghua Yu
2020-06-13 0:41 ` [PATCH v2 09/12] fork: Clear PASID for new mm Fenghua Yu
2020-06-13 0:41 ` [PATCH v2 10/12] x86/process: Clear PASID state for a newly forked/cloned thread Fenghua Yu
2020-06-13 0:41 ` [PATCH v2 11/12] x86/mmu: Allocate/free PASID Fenghua Yu
2020-06-13 13:07 ` Lu Baolu
2020-06-15 2:13 ` Lu Baolu
2020-06-13 0:41 ` [PATCH v2 12/12] x86/traps: Fix up invalid PASID Fenghua Yu
2020-06-15 7:53 ` Peter Zijlstra
2020-06-15 7:56 ` Peter Zijlstra
2020-06-15 15:48 ` Fenghua Yu
2020-06-15 16:03 ` Peter Zijlstra
2020-06-15 17:11 ` Luck, Tony
2020-06-15 18:12 ` Fenghua Yu
2020-06-15 18:31 ` Peter Zijlstra
2020-06-15 18:55 ` Fenghua Yu
2020-06-15 19:09 ` Peter Zijlstra
2020-06-15 20:17 ` Fenghua Yu
2020-06-15 20:51 ` Andy Lutomirski
2020-06-15 20:56 ` Luck, Tony
2020-06-15 21:18 ` Andy Lutomirski
2020-06-15 21:24 ` Luck, Tony
2020-06-15 21:53 ` Peter Zijlstra
2020-06-16 23:23 ` Fenghua Yu
2020-06-17 8:31 ` Peter Zijlstra
2020-06-15 18:19 ` Raj, Ashok
2020-06-15 18:32 ` Peter Zijlstra
2020-06-15 7:52 ` [PATCH v2 00/12] x86: tag application address space for devices Peter Zijlstra
2020-06-15 14:53 ` Fenghua Yu
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1592008893-9388-9-git-send-email-fenghua.yu@intel.com \
--to=fenghua.yu@intel.com \
--cc=Felix.Kuehling@amd.com \
--cc=ajd@linux.ibm.com \
--cc=amd-gfx@lists.freedesktop.org \
--cc=ashok.raj@intel.com \
--cc=baolu.lu@linux.intel.com \
--cc=bp@alien8.de \
--cc=dave.hansen@intel.com \
--cc=dave.jiang@intel.com \
--cc=dwmw2@infradead.org \
--cc=fbarrat@linux.ibm.com \
--cc=hpa@zytor.com \
--cc=iommu@lists.linux-foundation.org \
--cc=jacob.jun.pan@intel.com \
--cc=joro@8bytes.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=mingo@redhat.com \
--cc=ravi.v.shankar@intel.com \
--cc=sohil.mehta@intel.com \
--cc=tglx@linutronix.de \
--cc=tony.luck@intel.com \
--cc=x86@kernel.org \
--cc=yu-cheng.yu@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).