xen: No need to flush the mapcache for grants

sstabellini · tperard · commit 68adcc784bad · 2025-03-10T13:28:03.000+01:00
On IOREQ_TYPE_INVALIDATE we need to invalidate the mapcache for regular mappings. Since recently we started reusing the mapcache also to keep track of grants mappings. However, there is no need to remove grant mappings on IOREQ_TYPE_INVALIDATE requests, we shouldn't do that. So remove the function call. Fixes: 9ecdd4b (xen: mapcache: Add support for grant mappings) Cc: qemu-stable@nongnu.org Reported-by: Olaf Hering <olaf@aepfle.de> Reviewed-by: Edgar E. Iglesias <edgar.iglesias@amd.com> Signed-off-by: Stefano Stabellini <stefano.stabellini@amd.com> Signed-off-by: Edgar E. Iglesias <edgar.iglesias@amd.com> Reviewed-by: Anthony PERARD <anthony.perard@vates.tech> Message-Id: <20250206194915.3357743-2-edgar.iglesias@gmail.com> Signed-off-by: Anthony PERARD <anthony.perard@vates.tech>
diff --git a/hw/xen/xen-mapcache.c b/hw/xen/xen-mapcache.c
@@ -700,7 +700,6 @@ void xen_invalidate_map_cache(void)
     bdrv_drain_all();
 
     xen_invalidate_map_cache_single(mapcache);
-    xen_invalidate_map_cache_single(mapcache_grants);
 }
 
 static uint8_t *xen_replace_cache_entry_unlocked(MapCache *mc,

Original file line number	Diff line number	Diff line change
`@@ -700,7 +700,6 @@ void xen_invalidate_map_cache(void)`
`700`	`700`	`bdrv_drain_all();`
`701`	`701`
`702`	`702`	`xen_invalidate_map_cache_single(mapcache);`
`703`		`- xen_invalidate_map_cache_single(mapcache_grants);`
`704`	`703`	`}`
`705`	`704`
`706`	`705`	`static uint8_t xen_replace_cache_entry_unlocked(MapCache mc,`