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Groups > linux.kernel > #1213064

Re: [PATCH v3 3/10] x86/asm: Fix pud/pmd interfaces to handle large PAT bit

From Toshi Kani <toshi.kani@hp.com>
Newsgroups linux.kernel
Subject Re: [PATCH v3 3/10] x86/asm: Fix pud/pmd interfaces to handle large PAT bit
Date 2015-08-25 16:20 +0200
Message-ID <q1neW-rx-21@gated-at.bofh.it> (permalink)
References <pUeJr-5l3-7@gated-at.bofh.it> <pUeJs-5l3-27@gated-at.bofh.it> <q1hCz-P0-43@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Tue, 2015-08-25 at 10:16 +0200, Thomas Gleixner wrote:
> On Wed, 5 Aug 2015, Toshi Kani wrote:
> 
> > The PAT bit gets relocated to bit 12 when PUD and PMD mappings are
> > used.  This bit 12, however, is not covered by PTE_FLAGS_MASK, which
> > is corrently used for masking pfn and flags for all cases.
> > 
> > Fix pud/pmd interfaces to handle pfn and flags properly by using
> > P?D_PAGE_MASK when PUD/PMD mappings are used, i.e. PSE bit is set.
> 
> Can you please split that into a patch introducing and describing the
> new mask helper functions and a second one making use of it?

Will do.  I will send out v4 patchset today with this update (and the patch
01 update). 

Thanks,
-Toshi
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Re: [PATCH v3 3/10] x86/asm: Fix pud/pmd interfaces to handle large  PAT bit Thomas Gleixner <tglx@linutronix.de> - 2015-08-25 10:20 +0200
  Re: [PATCH v3 3/10] x86/asm: Fix pud/pmd interfaces to handle large  PAT bit Toshi Kani <toshi.kani@hp.com> - 2015-08-25 16:20 +0200

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