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Message-ID: <20121003052803.GA27464@srcf.ucam.org> Date: Wed, 3 Oct 2012 06:28:03 +0100 From: Matthew Garrett <mjg@...hat.com> To: Thavatchai Makphaibulchoke <thavatchai.makpahibulchoke@...com> Cc: "H. Peter Anvin" <hpa@...or.com>, T Makphaibulchoke <tmac@...com>, tglx@...utronix.de, mingo@...hat.com, x86@...nel.org, akpm@...ux-foundation.org, yinghai@...nel.org, tiwai@...e.de, viro@...iv.linux.org.uk, aarcange@...hat.com, tony.luck@...el.com, mgorman@...e.de, weiyang@...ux.vnet.ibm.com, octavian.purdila@...el.com, paul.gortmaker@...driver.com, linux-kernel@...r.kernel.org, linux-mm@...ck.org Subject: Re: [PATCH] Fix devmem_is_allowed for below 1MB accesses for an efi machine On Tue, Oct 02, 2012 at 11:13:17PM -0600, Thavatchai Makphaibulchoke wrote: > Sounds like a better solution is to allow accesses to only I/O regions > presented in the EFI memory map for physical addresses below 1 MB. That won't work - unfortunately we do still need the low region to be available for X because some platforms expect us to use int10 even on EFI (yes, yes, I know). Do you have a copy of the EFI memory map for a system that's broken with the current code? -- Matthew Garrett | mjg59@...f.ucam.org -- 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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