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| author | Ian Campbell <ian.campbell@citrix.com> | 2010-09-30 12:37:26 +0100 |
|---|---|---|
| committer | Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> | 2010-11-12 15:00:06 -0800 |
| commit | 7e77506a5918d82cafa2ffa783ab57c23f9e9817 (patch) | |
| tree | dc922c1127c8859cda50f5cbed654c5681a89480 /arch/x86/include/asm/xen/interface.h | |
| parent | 9ec23a7f6d2537faf14368e066e307c06812c4ca (diff) | |
| download | op-kernel-dev-7e77506a5918d82cafa2ffa783ab57c23f9e9817.zip op-kernel-dev-7e77506a5918d82cafa2ffa783ab57c23f9e9817.tar.gz | |
xen: implement XENMEM_machphys_mapping
This hypercall allows Xen to specify a non-default location for the
machine to physical mapping. This capability is used when running a 32
bit domain 0 on a 64 bit hypervisor to shrink the hypervisor hole to
exactly the size required.
[ Impact: add Xen hypercall definitions ]
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Diffstat (limited to 'arch/x86/include/asm/xen/interface.h')
| -rw-r--r-- | arch/x86/include/asm/xen/interface.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/x86/include/asm/xen/interface.h b/arch/x86/include/asm/xen/interface.h index e8506c1..1c10c88 100644 --- a/arch/x86/include/asm/xen/interface.h +++ b/arch/x86/include/asm/xen/interface.h @@ -61,9 +61,9 @@ DEFINE_GUEST_HANDLE(void); #define HYPERVISOR_VIRT_START mk_unsigned_long(__HYPERVISOR_VIRT_START) #endif -#ifndef machine_to_phys_mapping -#define machine_to_phys_mapping ((unsigned long *)HYPERVISOR_VIRT_START) -#endif +#define MACH2PHYS_VIRT_START mk_unsigned_long(__MACH2PHYS_VIRT_START) +#define MACH2PHYS_VIRT_END mk_unsigned_long(__MACH2PHYS_VIRT_END) +#define MACH2PHYS_NR_ENTRIES ((MACH2PHYS_VIRT_END-MACH2PHYS_VIRT_START)>>__MACH2PHYS_SHIFT) /* Maximum number of virtual CPUs in multi-processor guests. */ #define MAX_VIRT_CPUS 32 |
