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[Qemu-devel] [PATCH 13/15] exec: check MRU in qemu_ram_addr_from_host
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PATCH 13/15] exec: check MRU in qemu_ram_addr_from_host |
Date: |
Sun, 2 Jun 2013 17:43:30 +0200 |
This function is not used outside the iothread mutex, so it
can use ram_list.mru_block.
Signed-off-by: Paolo Bonzini <address@hidden>
---
exec.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/exec.c b/exec.c
index bf287cb..9fd4c90 100644
--- a/exec.c
+++ b/exec.c
@@ -1441,18 +1441,26 @@ int qemu_ram_addr_from_host(void *ptr, ram_addr_t
*ram_addr)
return 0;
}
+ block = ram_list.mru_block;
+ if (block && block->host && host - block->host < block->length) {
+ goto found;
+ }
+
QTAILQ_FOREACH(block, &ram_list.blocks, next) {
/* This case append when the block is not mapped. */
if (block->host == NULL) {
continue;
}
if (host - block->host < block->length) {
- *ram_addr = block->offset + (host - block->host);
- return 0;
+ goto found;
}
}
return -1;
+
+found:
+ *ram_addr = block->offset + (host - block->host);
+ return 0;
}
/* Some of the softmmu routines need to translate from a host pointer
--
1.8.1.4
- [Qemu-devel] [PATCH 04/15] exec: add a reference to the region returned by address_space_translate, (continued)
- [Qemu-devel] [PATCH 04/15] exec: add a reference to the region returned by address_space_translate, Paolo Bonzini, 2013/06/02
- [Qemu-devel] [PATCH 03/15] memory: add ref/unref calls, Paolo Bonzini, 2013/06/02
- [Qemu-devel] [PATCH 05/15] pci: set owner for BARs, Paolo Bonzini, 2013/06/02
- [Qemu-devel] [PATCH 06/15] sysbus: set owner for MMIO regions, Paolo Bonzini, 2013/06/02
- [Qemu-devel] [PATCH 07/15] acpi: add memory_region_set_owner calls, Paolo Bonzini, 2013/06/02
- [Qemu-devel] [PATCH 08/15] misc: add memory_region_set_owner calls, Paolo Bonzini, 2013/06/02
- [Qemu-devel] [PATCH 09/15] isa/portio: allow setting an owner, Paolo Bonzini, 2013/06/02
- [Qemu-devel] [PATCH 10/15] vga: add memory_region_set_owner calls, Paolo Bonzini, 2013/06/02
- [Qemu-devel] [PATCH 11/15] pci-assign: add memory_region_set_owner calls, Paolo Bonzini, 2013/06/02
- [Qemu-devel] [PATCH 12/15] vfio: add memory_region_set_owner calls, Paolo Bonzini, 2013/06/02
- [Qemu-devel] [PATCH 13/15] exec: check MRU in qemu_ram_addr_from_host,
Paolo Bonzini <=
- [Qemu-devel] [PATCH 14/15] memory: return MemoryRegion from qemu_ram_addr_from_host, Paolo Bonzini, 2013/06/02
- [Qemu-devel] [PATCH 15/15] memory: ref/unref memory across address_space_map/unmap, Paolo Bonzini, 2013/06/02
- Re: [Qemu-devel] [PATCH 00/15] Memory/IOMMU patches part 4: region ownership, Peter Maydell, 2013/06/02