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Date: Sun, 31 May 2015 22:46:09 -0700 (PDT) From: David Miller <davem@...emloft.net> To: khalid.aziz@...cle.com Cc: bob.picco@...cle.com, kirill.shutemov@...ux.intel.com, akpm@...ux-foundation.org, sam@...nborg.org, rickard_strandqvist@...ctrumdigital.se, allen.pais@...cle.com, iamjoonsoo.kim@....com, sparclinux@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH v3] sparc: Resolve conflict between sparc v9 and M7 on usage of bit 9 of TTE From: Khalid Aziz <khalid.aziz@...cle.com> Date: Wed, 27 May 2015 10:00:46 -0600 > sparc: Resolve conflict between sparc v9 and M7 on usage of bit 9 of TTE > > Bit 9 of TTE is CV (Cacheable in V-cache) on sparc v9 processor while > the same bit 9 is MCDE (Memory Corruption Detection Enable) on M7 > processor. This creates a conflicting usage of the same bit. Kernel > sets TTE.cv bit on all pages for sun4v architecture which works well > for sparc v9 but enables memory corruption detection on M7 processor > which is not the intent. This patch adds code to determine if kernel > is running on M7 processor and takes steps to not enable memory > corruption detection in TTE erroneously. > > Signed-off-by: Khalid Aziz <khalid.aziz@...cle.com> Applied. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.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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