diff options
author | Jeremy Fitzhardinge <jeremy@goop.org> | 2007-05-02 13:27:13 -0400 |
---|---|---|
committer | Andi Kleen <andi@basil.nowhere.org> | 2007-05-02 13:27:13 -0400 |
commit | 90caccb9758e88db68a69553689baee38254287b (patch) | |
tree | d58d07649c62475810cfa527768034163c89eb15 /include | |
parent | b239fb2501117bf3aeb4dd6926edd855be92333d (diff) |
[PATCH] i386: PARAVIRT: Allocate a fixmap slot
Allocate a fixmap slot for use by a paravirt_ops implementation. This
is intended for early-boot bootstrap mappings. Once the zones and
allocator have been set up, it would be better to use get_vm_area() to
allocate some virtual space.
Xen uses this to map the hypervisor's shared info page, which doesn't
have a pseudo-physical page number, and therefore can't be mapped
ordinarily. It is needed early because it contains the vcpu state,
including the interrupt mask.
Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Acked-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include')
-rw-r--r-- | include/asm-i386/fixmap.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/asm-i386/fixmap.h b/include/asm-i386/fixmap.h index e5651b2a585a..80ea052ee3a4 100644 --- a/include/asm-i386/fixmap.h +++ b/include/asm-i386/fixmap.h | |||
@@ -84,6 +84,9 @@ enum fixed_addresses { | |||
84 | #ifdef CONFIG_PCI_MMCONFIG | 84 | #ifdef CONFIG_PCI_MMCONFIG |
85 | FIX_PCIE_MCFG, | 85 | FIX_PCIE_MCFG, |
86 | #endif | 86 | #endif |
87 | #ifdef CONFIG_PARAVIRT | ||
88 | FIX_PARAVIRT_BOOTMAP, | ||
89 | #endif | ||
87 | __end_of_permanent_fixed_addresses, | 90 | __end_of_permanent_fixed_addresses, |
88 | /* temporary boot-time mappings, used before ioremap() is functional */ | 91 | /* temporary boot-time mappings, used before ioremap() is functional */ |
89 | #define NR_FIX_BTMAPS 16 | 92 | #define NR_FIX_BTMAPS 16 |