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authorJun Nakajima <jun.nakajima@intel.com>2010-08-31 16:41:25 +0100
committerAlexander Graf <agraf@suse.de>2011-05-08 10:10:01 +0200
commit432d268c0552fd30c8be564f7ea2504a2b546101 (patch)
treed74d75e9b70fd2ced0daf705062260dab19b40c4 /trace-events
parent9c11a8ac886ccbb5f8e1b08e8ae12f045d783031 (diff)
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>
Diffstat (limited to 'trace-events')
-rw-r--r--trace-events10
1 files changed, 10 insertions, 0 deletions
diff --git a/trace-events b/trace-events
index 4f965e2eb..d703347d4 100644
--- a/trace-events
+++ b/trace-events
@@ -361,3 +361,13 @@ disable milkymist_uart_pulse_irq_tx(void) "Pulse IRQ TX"
# hw/milkymist-vgafb.c
disable milkymist_vgafb_memory_read(uint32_t addr, uint32_t value) "addr %08x value %08x"
disable milkymist_vgafb_memory_write(uint32_t addr, uint32_t value) "addr %08x value %08x"
+
+# xen-all.c
+disable xen_ram_alloc(unsigned long ram_addr, unsigned long size) "requested: %#lx, size %#lx"
+
+# xen-mapcache.c
+disable qemu_map_cache(uint64_t phys_addr) "want %#"PRIx64""
+disable qemu_remap_bucket(uint64_t index) "index %#"PRIx64""
+disable qemu_map_cache_return(void* ptr) "%p"
+disable xen_map_block(uint64_t phys_addr, uint64_t size) "%#"PRIx64", size %#"PRIx64""
+disable xen_unmap_block(void* addr, unsigned long size) "%p, size %#lx"