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| author | Stefano Stabellini <stefano.stabellini@eu.citrix.com> | 2012-09-14 15:34:43 +0200 |
|---|---|---|
| committer | Stefano Stabellini <stefano.stabellini@eu.citrix.com> | 2012-09-14 15:34:43 +0200 |
| commit | 256f631f1f7e7bedc882510679ad4473a2274708 (patch) | |
| tree | 16deef95ae59e6fdf63fa3707cf07ac4df1d4d27 /arch | |
| parent | xen/arm: Xen detection and shared_info page mapping (diff) | |
| download | linux-256f631f1f7e7bedc882510679ad4473a2274708.tar.xz linux-256f631f1f7e7bedc882510679ad4473a2274708.zip | |
xen/arm: Introduce xen_ulong_t for unsigned long
All the original Xen headers have xen_ulong_t as unsigned long type, however
when they have been imported in Linux, xen_ulong_t has been replaced with
unsigned long. That might work for x86 and ia64 but it does not for arm.
Bring back xen_ulong_t and let each architecture define xen_ulong_t as they
see fit.
Also explicitly size pointers (__DEFINE_GUEST_HANDLE) to 64 bit.
Changes in v3:
- remove the incorrect changes to multicall_entry;
- remove the change to apic_physbase.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/include/asm/xen/interface.h | 8 | ||||
| -rw-r--r-- | arch/ia64/include/asm/xen/interface.h | 1 | ||||
| -rw-r--r-- | arch/x86/include/asm/xen/interface.h | 1 |
3 files changed, 8 insertions, 2 deletions
diff --git a/arch/arm/include/asm/xen/interface.h b/arch/arm/include/asm/xen/interface.h index 74c72b5083a6..ae05e56dd17d 100644 --- a/arch/arm/include/asm/xen/interface.h +++ b/arch/arm/include/asm/xen/interface.h @@ -9,8 +9,11 @@ #include <linux/types.h> +#define uint64_aligned_t uint64_t __attribute__((aligned(8))) + #define __DEFINE_GUEST_HANDLE(name, type) \ - typedef type * __guest_handle_ ## name + typedef struct { union { type *p; uint64_aligned_t q; }; } \ + __guest_handle_ ## name #define DEFINE_GUEST_HANDLE_STRUCT(name) \ __DEFINE_GUEST_HANDLE(name, struct name) @@ -21,13 +24,14 @@ do { \ if (sizeof(hnd) == 8) \ *(uint64_t *)&(hnd) = 0; \ - (hnd) = val; \ + (hnd).p = val; \ } while (0) #ifndef __ASSEMBLY__ /* Explicitly size integers that represent pfns in the interface with * Xen so that we can have one ABI that works for 32 and 64 bit guests. */ typedef uint64_t xen_pfn_t; +typedef uint64_t xen_ulong_t; /* Guest handles for primitive C types. */ __DEFINE_GUEST_HANDLE(uchar, unsigned char); __DEFINE_GUEST_HANDLE(uint, unsigned int); diff --git a/arch/ia64/include/asm/xen/interface.h b/arch/ia64/include/asm/xen/interface.h index 3d52a5bbd857..e88c5de27410 100644 --- a/arch/ia64/include/asm/xen/interface.h +++ b/arch/ia64/include/asm/xen/interface.h @@ -71,6 +71,7 @@ * with Xen so that we could have one ABI that works for 32 and 64 bit * guests. */ typedef unsigned long xen_pfn_t; +typedef unsigned long xen_ulong_t; /* Guest handles for primitive C types. */ __DEFINE_GUEST_HANDLE(uchar, unsigned char); __DEFINE_GUEST_HANDLE(uint, unsigned int); diff --git a/arch/x86/include/asm/xen/interface.h b/arch/x86/include/asm/xen/interface.h index 555f94d3637b..28fc6211a79a 100644 --- a/arch/x86/include/asm/xen/interface.h +++ b/arch/x86/include/asm/xen/interface.h @@ -51,6 +51,7 @@ * with Xen so that on ARM we can have one ABI that works for 32 and 64 * bit guests. */ typedef unsigned long xen_pfn_t; +typedef unsigned long xen_ulong_t; /* Guest handles for primitive C types. */ __DEFINE_GUEST_HANDLE(uchar, unsigned char); __DEFINE_GUEST_HANDLE(uint, unsigned int); |