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# Date Author Comment
e41d7c69 07/17/2011 02:54 am Jan Kiszka

xen: Clean up map cache API naming

The map cache is a Xen thing, so its API should make this clear.

Signed-off-by: Jan Kiszka <>
Signed-off-by: Alexander Graf <>
6506e4f9 06/19/2011 05:40 am Stefano Stabellini

xen: remove xen_map_block and xen_unmap_block

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 <>...
c13390cd 06/19/2011 05:40 am Stefano Stabellini

xen: fix qemu_map_cache with size != MCACHE_BUCKET_SIZE

Fix the implementation of qemu_map_cache: correctly support size
arguments different from 0 or MCACHE_BUCKET_SIZE.
The new implementation supports locked mapcache entries with size
multiple of MCACHE_BUCKET_SIZE. qemu_invalidate_entry can correctly...
cd306087 06/19/2011 05:40 am Stefano Stabellini

xen: remove qemu_map_cache_unlock

There is no need for qemu_map_cache_unlock, just use
qemu_invalidate_entry instead.

Signed-off-by: Stefano Stabellini <>
Signed-off-by: Alexander Graf <>
432d268c 05/08/2011 11:10 am Jun Nakajima

xen: Introduce the Xen mapcache

On IA32 host or IA32 PAE host, at present, generally, we can't create
an HVM guest with more than 2G memory, because generally it's almost
impossible for Qemu to find a large enough and consecutive virtual
address space to map an HVM guest's whole physical address space....
ea6c5f8f 05/08/2011 11:10 am John Baboval

xen: Adds a cap to the number of map cache entries.

Adds a cap to the number of map cache entries. This prevents the map
cache from overwhelming system memory.

I also removed the bitmap macros and #included bitmap.h instead.

Signed-off-By: John Baboval <>...
050a0ddf 05/08/2011 11:10 am Anthony PERARD

Introduce qemu_put_ram_ptr

This function allows to unlock a ram_ptr give by qemu_get_ram_ptr. After
a call to qemu_put_ram_ptr, the pointer may be unmap from QEMU when
used with Xen.

Signed-off-by: Anthony PERARD <>
Acked-by: Alexander Graf <>...