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| author | Stefano Stabellini <stefano.stabellini@eu.citrix.com> | 2010-10-22 21:24:06 +0100 |
|---|---|---|
| committer | Stefano Stabellini <stefano.stabellini@eu.citrix.com> | 2010-10-22 21:24:06 +0100 |
| commit | 67ba37293e938208795d6a3562201bdb0cf43393 (patch) | |
| tree | 3522e949ff19f3809583bfb3fa3973ddf264689d /arch/x86/include/asm/io.h | |
| parent | cd07202cc8262e1669edff0d97715f3dd9260917 (diff) | |
| parent | 5bba6c56dc99ff88f79a79572e29ecf445710878 (diff) | |
| download | linux-3.10-67ba37293e938208795d6a3562201bdb0cf43393.tar.gz linux-3.10-67ba37293e938208795d6a3562201bdb0cf43393.tar.bz2 linux-3.10-67ba37293e938208795d6a3562201bdb0cf43393.zip | |
Merge commit 'konrad/stable/xen-pcifront-0.8.2' into 2.6.36-rc8-initial-domain-v6
Diffstat (limited to 'arch/x86/include/asm/io.h')
| -rw-r--r-- | arch/x86/include/asm/io.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/x86/include/asm/io.h b/arch/x86/include/asm/io.h index 30a3e977612..0ad29d40156 100644 --- a/arch/x86/include/asm/io.h +++ b/arch/x86/include/asm/io.h @@ -41,6 +41,8 @@ #include <asm-generic/int-ll64.h> #include <asm/page.h> +#include <xen/xen.h> + #define build_mmio_read(name, size, type, reg, barrier) \ static inline type name(const volatile void __iomem *addr) \ { type ret; asm volatile("mov" size " %1,%0":reg (ret) \ @@ -349,6 +351,17 @@ extern void __iomem *early_memremap(resource_size_t phys_addr, extern void early_iounmap(void __iomem *addr, unsigned long size); extern void fixup_early_ioremap(void); +#ifdef CONFIG_XEN +struct bio_vec; + +extern bool xen_biovec_phys_mergeable(const struct bio_vec *vec1, + const struct bio_vec *vec2); + +#define BIOVEC_PHYS_MERGEABLE(vec1, vec2) \ + (__BIOVEC_PHYS_MERGEABLE(vec1, vec2) && \ + (!xen_domain() || xen_biovec_phys_mergeable(vec1, vec2))) +#endif /* CONFIG_XEN */ + #define IO_SPACE_LIMIT 0xffff #endif /* _ASM_X86_IO_H */ |