From: Peter Zijlstra <peterz@infradead.org>
To: Fenghua Yu <fenghua.yu@intel.com>
Cc: Dave Hansen <dave.hansen@intel.com>,
H Peter Anvin <hpa@zytor.com>, Dave Jiang <dave.jiang@intel.com>,
Ashok Raj <ashok.raj@intel.com>, x86 <x86@kernel.org>,
amd-gfx <amd-gfx@lists.freedesktop.org>,
Ingo Molnar <mingo@redhat.com>,
Ravi V Shankar <ravi.v.shankar@intel.com>,
Yu-cheng Yu <yu-cheng.yu@intel.com>,
Andrew Donnellan <ajd@linux.ibm.com>,
Borislav Petkov <bp@alien8.de>,
Thomas Gleixner <tglx@linutronix.de>,
Tony Luck <tony.luck@intel.com>,
linuxppc-dev <linuxppc-dev@lists.ozlabs.org>,
Felix Kuehling <Felix.Kuehling@amd.com>,
linux-kernel <linux-kernel@vger.kernel.org>,
iommu@lists.linux-foundation.org,
Jacob Jun Pan <jacob.jun.pan@intel.com>,
Frederic Barrat <fbarrat@linux.ibm.com>,
David Woodhouse <dwmw2@infradead.org>
Subject: Re: [PATCH v2 00/12] x86: tag application address space for devices
Date: Mon, 15 Jun 2020 09:52:02 +0200 [thread overview]
Message-ID: <20200615075202.GI2497@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <1592008893-9388-1-git-send-email-fenghua.yu@intel.com>
On Fri, Jun 12, 2020 at 05:41:21PM -0700, Fenghua Yu wrote:
> This series only provides simple and basic support for ENQCMD and the MSR:
> 1. Clean up type definitions (patch 1-3). These patches can be in a
> separate series.
> - Define "pasid" as "unsigned int" consistently (patch 1 and 2).
> - Define "flags" as "unsigned int"
> 2. Explain different various technical terms used in the series (patch 4).
> 3. Enumerate support for ENQCMD in the processor (patch 5).
> 4. Handle FPU PASID state and the MSR during context switch (patches 6-7).
> 5. Define "pasid" in mm_struct (patch 8).
> 5. Clear PASID state for new mm and forked and cloned thread (patch 9-10).
> 6. Allocate and free PASID for a process (patch 11).
> 7. Fix up the PASID MSR in #GP handler when one thread in a process
> executes ENQCMD for the first time (patches 12).
If this is per mm, should not switch_mm() update the MSR ? I'm not
seeing that, nor do I see it explained why not.
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next prev parent reply other threads:[~2020-06-15 7:52 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 ` [PATCH v2 08/12] mm: Define pasid in mm Fenghua Yu
2020-06-16 8:28 ` 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 ` Peter Zijlstra [this message]
2020-06-15 14:53 ` [PATCH v2 00/12] x86: tag application address space for devices Fenghua Yu
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