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Add cache handling functions

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Add MRU page cache mechanism.
The page are accessed by their address.

Signed-off-by: Benoit Hudzia <benoit.hudzia@sap.com>
Signed-off-by: Petter Svard <petters@cs.umu.se>
Signed-off-by: Aidan Shribman <aidan.shribman@sap.com>
Signed-off-by: Orit Wasserman <owasserm@redhat.com>

Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Orit Wasserman 2012-08-06 21:42:50 +03:00 • committed by Juan Quintela
parent 34c26412b7
commit 9fb26641ab
5 changed files with 320 additions and 0 deletions
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13
qemu-common.h
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@ -1,3 +1,4 @@
/* Common header file that is included by all of qemu. */
#ifndef QEMU_COMMON_H
#define QEMU_COMMON_H
@ -428,6 +429,18 @@ static inline uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c)
/* Round number up to multiple */
#define QEMU_ALIGN_UP(n, m) QEMU_ALIGN_DOWN((n) + (m) - 1, (m))
static inline bool is_power_of_2(uint64_t value)
{
if (!value) {
return 0;
}
return !(value & (value - 1));
}
/* round down to the nearest power of 2*/
int64_t pow2floor(int64_t value);
#include "module.h"
#endif