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5 Commits

Author SHA1 Message Date
Avi Kivity fd2a9d2fc7 xen: fix xen-mapcache build on non-Xen capable targets 
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
 2011-07-22 17:43:42 +00:00
Jan Kiszka e41d7c691a 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 <jan.kiszka@siemens.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
 2011-07-17 01:54:24 +02:00
Stefano Stabellini 6506e4f995 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 <stefano.stabellini@eu.citrix.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
 2011-06-19 04:40:05 +02:00
Stefano Stabellini cd306087e5 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 <stefano.stabellini@eu.citrix.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
 2011-06-19 04:40:04 +02:00
Jun Nakajima 432d268c05 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.
The attached patch fixes this issue using dynamic mapping based on
little blocks of memory.

Each call to qemu_get_ram_ptr makes a call to qemu_map_cache with the
lock option, so mapcache will not unmap these ram_ptr.

Blocks that do not belong to the RAM, but usually to a device ROM or to
a framebuffer, are handled in a separate function. So the whole RAMBlock
can be map.

Signed-off-by: Jun Nakajima <jun.nakajima@intel.com>
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
 2011-05-08 10:10:01 +02:00