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xen mapcache: check if memory region has moved.

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This patch changes the xen_map_cache behavior. Before trying to map a guest
addr, mapcache will look into the list of range of address that have been moved
(physmap/set_memory). There is currently one memory space like this, the vram,
"moved" from were it's allocated to were the guest will look into.

This help to have a succefull migration.

Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
This commit is contained in:
Anthony PERARD 2012-01-18 12:21:38 +00:00 • committed by Stefano Stabellini
parent d1814e08c0
commit cd1ba7de23
3 changed files with 43 additions and 6 deletions
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9
xen-mapcache.h
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@ -11,9 +11,13 @@
#include <stdlib.h>
typedef target_phys_addr_t (*phys_offset_to_gaddr_t)(target_phys_addr_t start_addr,
ram_addr_t size,
void *opaque);
#ifdef CONFIG_XEN
void xen_map_cache_init(void);
void xen_map_cache_init(phys_offset_to_gaddr_t f,
void *opaque);
uint8_t *xen_map_cache(target_phys_addr_t phys_addr, target_phys_addr_t size,
uint8_t lock);
ram_addr_t xen_ram_addr_from_mapcache(void *ptr);
@ -22,7 +26,8 @@ void xen_invalidate_map_cache(void);
#else
static inline void xen_map_cache_init(void)
static inline void xen_map_cache_init(phys_offset_to_gaddr_t f,
void *opaque)
{
}