mirror of
https://gitlab.com/qemu-project/qemu
synced 2024-09-06 18:05:37 +00:00
![Markus Armbruster](/assets/img/avatar_default.png)
73af8dd8d7
"migration: Make xbzrle_cache_size a migration
parameter" (v2.11.0) made the new parameter unsigned (QAPI type
'size', uint64_t in C). It neglected to update existing code, which
continues to use int64_t.
migrate_xbzrle_cache_size() returns the new parameter. Adjust its
return type.
QMP query-migrate-cache-size returns migrate_xbzrle_cache_size().
Adjust its return type.
migrate-set-parameters passes the new parameter to
xbzrle_cache_resize(). Adjust its parameter type.
xbzrle_cache_resize() passes it on to cache_init(). Adjust its
parameter type.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <20210202141734.2488076-3-armbru@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
75 lines
1.9 KiB
C
75 lines
1.9 KiB
C
/*
|
|
* Page cache for QEMU
|
|
* The cache is base on a hash of the page address
|
|
*
|
|
* Copyright 2012 Red Hat, Inc. and/or its affiliates
|
|
*
|
|
* Authors:
|
|
* Orit Wasserman <owasserm@redhat.com>
|
|
*
|
|
* This work is licensed under the terms of the GNU GPL, version 2 or later.
|
|
* See the COPYING file in the top-level directory.
|
|
*
|
|
*/
|
|
|
|
#ifndef PAGE_CACHE_H
|
|
#define PAGE_CACHE_H
|
|
|
|
/* Page cache for storing guest pages */
|
|
typedef struct PageCache PageCache;
|
|
|
|
/**
|
|
* cache_init: Initialize the page cache
|
|
*
|
|
*
|
|
* Returns new allocated cache or NULL on error
|
|
*
|
|
* @cache_size: cache size in bytes
|
|
* @page_size: cache page size
|
|
* @errp: set *errp if the check failed, with reason
|
|
*/
|
|
PageCache *cache_init(uint64_t cache_size, size_t page_size, Error **errp);
|
|
/**
|
|
* cache_fini: free all cache resources
|
|
* @cache pointer to the PageCache struct
|
|
*/
|
|
void cache_fini(PageCache *cache);
|
|
|
|
/**
|
|
* cache_is_cached: Checks to see if the page is cached
|
|
*
|
|
* Returns %true if page is cached
|
|
*
|
|
* @cache pointer to the PageCache struct
|
|
* @addr: page addr
|
|
* @current_age: current bitmap generation
|
|
*/
|
|
bool cache_is_cached(const PageCache *cache, uint64_t addr,
|
|
uint64_t current_age);
|
|
|
|
/**
|
|
* get_cached_data: Get the data cached for an addr
|
|
*
|
|
* Returns pointer to the data cached or NULL if not cached
|
|
*
|
|
* @cache pointer to the PageCache struct
|
|
* @addr: page addr
|
|
*/
|
|
uint8_t *get_cached_data(const PageCache *cache, uint64_t addr);
|
|
|
|
/**
|
|
* cache_insert: insert the page into the cache. the page cache
|
|
* will dup the data on insert. the previous value will be overwritten
|
|
*
|
|
* Returns -1 when the page isn't inserted into cache
|
|
*
|
|
* @cache pointer to the PageCache struct
|
|
* @addr: page address
|
|
* @pdata: pointer to the page
|
|
* @current_age: current bitmap generation
|
|
*/
|
|
int cache_insert(PageCache *cache, uint64_t addr, const uint8_t *pdata,
|
|
uint64_t current_age);
|
|
|
|
#endif
|