From: Fenghua Yu <fenghua.yu@intel.com>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: 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>,
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>,
Sohil Mehta <sohil.mehta@intel.com>,
Ravi V Shankar <ravi.v.shankar@intel.com>,
linux-kernel <linux-kernel@vger.kernel.org>, x86 <x86@kernel.org>,
iommu@lists.linux-foundation.org
Subject: Re: [PATCH 4/7] x86/msr-index: Define IA32_PASID MSR
Date: Mon, 27 Apr 2020 13:50:51 -0700 [thread overview]
Message-ID: <20200427205050.GE242333@romley-ivt3.sc.intel.com> (raw)
In-Reply-To: <87sggqsd9j.fsf@nanos.tec.linutronix.de>
On Sun, Apr 26, 2020 at 01:22:00PM +0200, Thomas Gleixner wrote:
> Fenghua Yu <fenghua.yu@intel.com> writes:
>
> > The IA32_PASID MSR (0xd93) contains the Process Address Space Identifier
> > (PASID), a 20-bit value. Bit 31 must be set to indicate the value
> > programmed in the MSR is valid. Hardware uses PASID to identify which
> > process submits the work and direct responses to the right process.
>
> No. It does not identify the process. It identifies the process' address
> space as the name says.
>
> Please provide coherent and precise information.
Ok. Will change to address space identification.
Thanks.
-Fenghua
next prev parent reply other threads:[~2020-04-27 20:51 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-30 19:33 [PATCH 0/7] x86: tag application address space for devices Fenghua Yu
2020-03-30 19:33 ` [PATCH 1/7] docs: x86: Add a documentation for ENQCMD Fenghua Yu
2020-04-26 11:02 ` Thomas Gleixner
2020-04-27 20:13 ` Fenghua Yu
2020-03-30 19:33 ` [PATCH 2/7] x86/cpufeatures: Enumerate ENQCMD and ENQCMDS instructions Fenghua Yu
2020-04-26 11:06 ` Thomas Gleixner
2020-04-27 20:17 ` Fenghua Yu
2020-03-30 19:33 ` [PATCH 3/7] x86/fpu/xstate: Add supervisor PASID state for ENQCMD feature Fenghua Yu
2020-04-26 11:17 ` Thomas Gleixner
2020-04-27 20:33 ` Fenghua Yu
2020-03-30 19:33 ` [PATCH 4/7] x86/msr-index: Define IA32_PASID MSR Fenghua Yu
2020-04-26 11:22 ` Thomas Gleixner
2020-04-27 20:50 ` Fenghua Yu [this message]
2020-03-30 19:33 ` [PATCH 5/7] x86/mmu: Allocate/free PASID Fenghua Yu
2020-04-26 14:55 ` Thomas Gleixner
2020-04-27 22:18 ` Fenghua Yu
2020-04-27 23:44 ` Thomas Gleixner
2020-04-28 18:21 ` Jacob Pan (Jun)
2020-04-28 18:54 ` Thomas Gleixner
2020-04-28 19:07 ` Luck, Tony
2020-04-28 20:42 ` Jacob Pan (Jun)
2020-04-28 20:59 ` Luck, Tony
2020-04-28 22:13 ` Jacob Pan (Jun)
2020-04-28 22:32 ` Luck, Tony
2020-04-28 20:40 ` Jacob Pan (Jun)
2020-04-28 20:57 ` Fenghua Yu
2020-03-30 19:33 ` [PATCH 6/7] x86/traps: Fix up invalid PASID Fenghua Yu
2020-04-26 15:25 ` Thomas Gleixner
2020-04-27 20:11 ` Fenghua Yu
2020-04-28 0:13 ` Thomas Gleixner
2020-04-27 22:46 ` Raj, Ashok
2020-04-27 23:08 ` Luck, Tony
2020-04-28 0:20 ` Thomas Gleixner
2020-04-28 0:54 ` Thomas Gleixner
2020-04-28 1:08 ` Raj, Ashok
2020-03-30 19:33 ` [PATCH 7/7] x86/process: Clear PASID state for a newly forked/cloned thread Fenghua Yu
2020-04-22 20:41 ` [PATCH 0/7] x86: tag application address space for devices Fenghua Yu
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