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Message-ID: <1290015033.2351.69.camel@e102109-lin.cambridge.arm.com> Date: Wed, 17 Nov 2010 17:30:33 +0000 From: Catalin Marinas <catalin.marinas@....com> To: Russell King - ARM Linux <linux@....linux.org.uk> Cc: linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH v2 05/20] ARM: LPAE: Introduce L_PTE_NOEXEC and L_PTE_NOWRITE On Wed, 2010-11-17 at 17:24 +0000, Russell King - ARM Linux wrote: > On Wed, Nov 17, 2010 at 05:22:12PM +0000, Catalin Marinas wrote: > > Ah, good point, that was the mask. > > > > So for dmacoherent we make sure that L_PTE_EXEC is cleared. I suspect > > we should now make sure that L_PTE_NOEXEC is set. For the other two, > > just leave them as they are. > > Already done: > > #define pgprot_dmacoherent(prot) \ > - __pgprot_modify(prot, L_PTE_MT_MASK|L_PTE_EXEC, L_PTE_MT_BUFFERABLE) > + __pgprot_modify(prot, L_PTE_MT_MASK, L_PTE_MT_BUFFERABLE|L_PTE_XN) > ... > #define pgprot_dmacoherent(prot) \ > - __pgprot_modify(prot, L_PTE_MT_MASK|L_PTE_EXEC, L_PTE_MT_UNCACHED) > + __pgprot_modify(prot, L_PTE_MT_MASK, L_PTE_MT_UNCACHED|L_PTE_XN) Are you already doing such changes? Just to avoid duplicating effort (and use common naming scheme). -- Catalin -- 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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