xen-devel
[Xen-devel] [PATCH 08/27] x86/pci: make sure _PAGE_IOMAP it set on pci m
From: Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>
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@xxxxxxxxxx>
---
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 5ead808..e233e58 100644
--- a/arch/x86/pci/i386.c
+++ b/arch/x86/pci/i386.c
@@ -296,6 +296,9 @@ 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
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- [Xen-devel] [GIT PULL] Xen dom0 hardware access support, Jeremy Fitzhardinge
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- [Xen-devel] [PATCH 06/27] x86/PCI: Enable scanning of all pci functions, Jeremy Fitzhardinge
- [Xen-devel] [PATCH 08/27] x86/pci: make sure _PAGE_IOMAP it set on pci mappings,
Jeremy Fitzhardinge <=
- [Xen-devel] [PATCH 05/27] x86/PCI: Clean up pci_cache_line_size, Jeremy Fitzhardinge
- [Xen-devel] [PATCH 09/27] xen/pci: clean up Kconfig a bit, Jeremy Fitzhardinge
- [Xen-devel] [PATCH 03/27] Xen: Rename the balloon lock, Jeremy Fitzhardinge
- [Xen-devel] [PATCH 10/27] xen: make sure swiotlb allocation is physically contigious, Jeremy Fitzhardinge
- [Xen-devel] [PATCH 12/27] xen: add hooks for mapping phys<->bus addresses in swiotlb, Jeremy Fitzhardinge
- [Xen-devel] [PATCH 11/27] xen swiotlb: fixup swiotlb is chunks smaller than MAX_CONTIG_ORDER, Jeremy Fitzhardinge
- [Xen-devel] [PATCH 16/27] swiotlb: use swiotlb_alloc_boot to allocate emergency pool, Jeremy Fitzhardinge
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