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xen: remove xen_map_block and xen_unmap_block

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Replace xen_map_block with qemu_map_cache with the appropriate locking
and size parameters.
Replace xen_unmap_block with qemu_invalidate_entry.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Stefano Stabellini 2011-05-19 18:35:44 +01:00 committed by Alexander Graf
parent cd306087e5
commit 6506e4f995
4 changed files with 4 additions and 65 deletions
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19
exec.c
View File

@ -53,6 +53,7 @@
#endif
#else /* !CONFIG_USER_ONLY */
#include "xen-mapcache.h"
#include "trace.h"
#endif
//#define DEBUG_TB_INVALIDATE
@ -3088,7 +3089,7 @@ void *qemu_get_ram_ptr(ram_addr_t addr)
if (block->offset == 0) {
return qemu_map_cache(addr, 0, 1);
} else if (block->host == NULL) {
block->host = xen_map_block(block->offset, block->length);
block->host = qemu_map_cache(block->offset, block->length, 1);
}
}
return block->host + (addr - block->offset);
@ -3117,7 +3118,7 @@ void *qemu_safe_ram_ptr(ram_addr_t addr)
if (block->offset == 0) {
return qemu_map_cache(addr, 0, 1);
} else if (block->host == NULL) {
block->host = xen_map_block(block->offset, block->length);
block->host = qemu_map_cache(block->offset, block->length, 1);
}
}
return block->host + (addr - block->offset);
@ -3135,19 +3136,7 @@ void qemu_put_ram_ptr(void *addr)
trace_qemu_put_ram_ptr(addr);
if (xen_mapcache_enabled()) {
RAMBlock *block;
QLIST_FOREACH(block, &ram_list.blocks, next) {
if (addr == block->host) {
break;
}
}
if (block && block->host) {
xen_unmap_block(block->host, block->length);
block->host = NULL;
} else {
qemu_invalidate_entry(addr);
}
qemu_invalidate_entry(block->host);
}
}

4
xen-mapcache-stub.c
View File

@ -34,7 +34,3 @@ void qemu_invalidate_map_cache(void)
void qemu_invalidate_entry(uint8_t *buffer)
{
}
uint8_t *xen_map_block(target_phys_addr_t phys_addr, target_phys_addr_t size)
{
return NULL;
}

31
xen-mapcache.c
View File

@ -362,34 +362,3 @@ void qemu_invalidate_map_cache(void)
mapcache_unlock();
}
uint8_t *xen_map_block(target_phys_addr_t phys_addr, target_phys_addr_t size)
{
uint8_t *vaddr_base;
xen_pfn_t *pfns;
int *err;
unsigned int i;
target_phys_addr_t nb_pfn = size >> XC_PAGE_SHIFT;
trace_xen_map_block(phys_addr, size);
phys_addr >>= XC_PAGE_SHIFT;
pfns = qemu_mallocz(nb_pfn * sizeof (xen_pfn_t));
err = qemu_mallocz(nb_pfn * sizeof (int));
for (i = 0; i < nb_pfn; i++) {
pfns[i] = phys_addr + i;
}
vaddr_base = xc_map_foreign_bulk(xen_xc, xen_domid, PROT_READ|PROT_WRITE,
pfns, err, nb_pfn);
if (vaddr_base == NULL) {
perror("xc_map_foreign_bulk");
exit(-1);
}
qemu_free(pfns);
qemu_free(err);
return vaddr_base;
}

15
xen-mapcache.h
View File

@ -9,27 +9,12 @@
#ifndef XEN_MAPCACHE_H
#define XEN_MAPCACHE_H
#include <sys/mman.h>
#include "trace.h"
void qemu_map_cache_init(void);
uint8_t *qemu_map_cache(target_phys_addr_t phys_addr, target_phys_addr_t size, uint8_t lock);
ram_addr_t qemu_ram_addr_from_mapcache(void *ptr);
void qemu_invalidate_entry(uint8_t *buffer);
void qemu_invalidate_map_cache(void);
uint8_t *xen_map_block(target_phys_addr_t phys_addr, target_phys_addr_t size);
static inline void xen_unmap_block(void *addr, ram_addr_t size)
{
trace_xen_unmap_block(addr, size);
if (munmap(addr, size) != 0) {
hw_error("xen_unmap_block: %s", strerror(errno));
}
}
#define mapcache_lock() ((void)0)
#define mapcache_unlock() ((void)0)