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Groups > linux.kernel > #1212802 > unrolled thread
| Started by | Thomas Gleixner <tglx@linutronix.de> |
|---|---|
| First post | 2015-08-25 10:20 +0200 |
| Last post | 2015-08-25 16:20 +0200 |
| Articles | 2 — 2 participants |
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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
| From | Thomas Gleixner <tglx@linutronix.de> |
|---|---|
| Date | 2015-08-25 10:20 +0200 |
| Subject | Re: [PATCH v3 3/10] x86/asm: Fix pud/pmd interfaces to handle large PAT bit |
| Message-ID | <q1hCz-P0-43@gated-at.bofh.it> |
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? Thanks, tglx -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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| From | Toshi Kani <toshi.kani@hp.com> |
|---|---|
| Date | 2015-08-25 16:20 +0200 |
| Message-ID | <q1neW-rx-21@gated-at.bofh.it> |
| In reply to | #1212802 |
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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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