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Message-Id: <1241732737-7669-10-git-send-email-jeremy@goop.org> Date: Thu, 7 May 2009 14:45:35 -0700 From: Jeremy Fitzhardinge <jeremy@...p.org> To: Ingo Molnar <mingo@...e.hu> Cc: the arch/x86 maintainers <x86@...nel.org>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, Xen-devel <xen-devel@...ts.xensource.com>, Jeremy Fitzhardinge <jeremy.fitzhardinge@...rix.com> Subject: [PATCH 09/11] x86/pci: make sure _PAGE_IOMAP it set on pci mappings From: Jeremy Fitzhardinge <jeremy.fitzhardinge@...rix.com> Impact: bugfix When mapping pci space via /sys or /proc, make sure we're really doing a hardware mapping by setting _PAGE_IOMAP. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@...rix.com> Reviewed-by: "H. Peter Anvin" <hpa@...or.com> --- arch/x86/pci/i386.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/arch/x86/pci/i386.c b/arch/x86/pci/i386.c index f1817f7..255aece 100644 --- a/arch/x86/pci/i386.c +++ b/arch/x86/pci/i386.c @@ -274,6 +274,9 @@ int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma, return -EINVAL; prot = pgprot_val(vma->vm_page_prot); + + prot |= _PAGE_IOMAP; /* creating a mapping for IO */ + if (pat_enabled && write_combine) prot |= _PAGE_CACHE_WC; else if (pat_enabled || boot_cpu_data.x86 > 3) -- 1.6.0.6 -- 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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