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Groups > linux.kernel > #1230906 > unrolled thread
| Started by | Thomas Gleixner <tglx@linutronix.de> |
|---|---|
| First post | 2015-09-22 22:10 +0200 |
| Last post | 2015-09-22 22:30 +0200 |
| Articles | 2 — 2 participants |
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Re: [PATCH 11/26] x86, pkeys: add functions for set/fetch PKRU Thomas Gleixner <tglx@linutronix.de> - 2015-09-22 22:10 +0200
Re: [PATCH 11/26] x86, pkeys: add functions for set/fetch PKRU Dave Hansen <dave@sr71.net> - 2015-09-22 22:30 +0200
| From | Thomas Gleixner <tglx@linutronix.de> |
|---|---|
| Date | 2015-09-22 22:10 +0200 |
| Subject | Re: [PATCH 11/26] x86, pkeys: add functions for set/fetch PKRU |
| Message-ID | <qbC2Z-7gK-7@gated-at.bofh.it> |
On Wed, 16 Sep 2015, Dave Hansen wrote: > > This adds the raw instructions to access PKRU as well as some > accessor functions that correctly handle when the CPU does > not support the instruction. We don't use them here, but > we will use read_pkru() in the next patch. > > I do not see an immediate use for write_pkru(). But, we put it > here for partity with its twin. So that read_pkru() doesn't feel so lonely? I can't follow that logic. 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 | Dave Hansen <dave@sr71.net> |
|---|---|
| Date | 2015-09-22 22:30 +0200 |
| Message-ID | <qbCmm-7Dv-13@gated-at.bofh.it> |
| In reply to | #1230906 |
On 09/22/2015 01:05 PM, Thomas Gleixner wrote: > On Wed, 16 Sep 2015, Dave Hansen wrote: >> This adds the raw instructions to access PKRU as well as some >> accessor functions that correctly handle when the CPU does >> not support the instruction. We don't use them here, but >> we will use read_pkru() in the next patch. >> >> I do not see an immediate use for write_pkru(). But, we put it >> here for partity with its twin. > > So that read_pkru() doesn't feel so lonely? I can't follow that logic. I was actually using it in a few places, but it fell out of later versions of the patch. I'm happy to kill it. -- 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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