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Merge branch 'stable/xen-swiotlb-0.8.6' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen

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* 'stable/xen-swiotlb-0.8.6' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
  x86: Detect whether we should use Xen SWIOTLB.
  pci-swiotlb-xen: Add glue code to setup dma_ops utilizing xen_swiotlb_* functions.
  swiotlb-xen: SWIOTLB library for Xen PV guest with PCI passthrough.
  xen/mmu: inhibit vmap aliases rather than trying to clear them out
  vmap: add flag to allow lazy unmap to be disabled at runtime
  xen: Add xen_create_contiguous_region
  xen: Rename the balloon lock
  xen: Allow unprivileged Xen domains to create iomap pages
  xen: use _PAGE_IOMAP in ioremap to do machine mappings

Fix up trivial conflicts (adding both xen swiotlb and xen pci platform
driver setup close to each other) in drivers/xen/{Kconfig,Makefile} and
include/xen/xen-ops.h
This commit is contained in:
Linus Torvalds
2010-08-12 09:09:41 -07:00
parent d862b13bc8 fe96eb404e
commit 26f0cf9181
16 changed files with 1024 additions and 24 deletions
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8
arch/x86/include/asm/xen/page.h
View File

@@ -112,13 +112,9 @@ static inline xpaddr_t machine_to_phys(xmaddr_t machine)
*/
static inline unsigned long mfn_to_local_pfn(unsigned long mfn)
{
extern unsigned long max_mapnr;
unsigned long pfn = mfn_to_pfn(mfn);
if ((pfn < max_mapnr)
&& !xen_feature(XENFEAT_auto_translated_physmap)
&& (get_phys_to_machine(pfn) != mfn))
return max_mapnr; /* force !pfn_valid() */
/* XXX fixme; not true with sparsemem */
if (get_phys_to_machine(pfn) != mfn)
return -1; /* force !pfn_valid() */
return pfn;
}

14
arch/x86/include/asm/xen/swiotlb-xen.h Normal file
View File

@@ -0,0 +1,14 @@
#ifndef _ASM_X86_SWIOTLB_XEN_H
#define _ASM_X86_SWIOTLB_XEN_H
#ifdef CONFIG_SWIOTLB_XEN
extern int xen_swiotlb;
extern int __init pci_xen_swiotlb_detect(void);
extern void __init pci_xen_swiotlb_init(void);
#else
#define xen_swiotlb (0)
static inline int __init pci_xen_swiotlb_detect(void) { return 0; }
static inline void __init pci_xen_swiotlb_init(void) { }
#endif
#endif /* _ASM_X86_SWIOTLB_XEN_H */