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[Qemu-devel] [PATCH v2 07/11] exec: check MRU in qemu_ram_addr_from_host
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PATCH v2 07/11] exec: check MRU in qemu_ram_addr_from_host |
Date: |
Fri, 28 Jun 2013 18:58:18 +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 8722420..f3d7b18 100644
--- a/exec.c
+++ b/exec.c
@@ -1408,18 +1408,26 @@ 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 v2 00/11] Memory patches, part 4: region ownership, Paolo Bonzini, 2013/06/28
- [Qemu-devel] [PATCH v2 02/11] memory: destroy phys_sections one by one, Paolo Bonzini, 2013/06/28
- [Qemu-devel] [PATCH v2 03/11] exec: simplify destruction of the phys map, Paolo Bonzini, 2013/06/28
- [Qemu-devel] [PATCH v2 04/11] memory: add getter for owner, Paolo Bonzini, 2013/06/28
- [Qemu-devel] [PATCH v2 07/11] exec: check MRU in qemu_ram_addr_from_host,
Paolo Bonzini <=
- [Qemu-devel] [PATCH v2 05/11] memory: add ref/unref, Paolo Bonzini, 2013/06/28
- [Qemu-devel] [PATCH v2 06/11] memory: add ref/unref calls, Paolo Bonzini, 2013/06/28
- [Qemu-devel] [PATCH v2 08/11] exec: move qemu_ram_addr_from_host_nofail to cputlb.c, Paolo Bonzini, 2013/06/28
- [Qemu-devel] [PATCH v2 09/11] memory: return MemoryRegion from qemu_ram_addr_from_host, Paolo Bonzini, 2013/06/28
- [Qemu-devel] [PATCH v2 10/11] exec: reorganize address_space_map, Paolo Bonzini, 2013/06/28
- [Qemu-devel] [PATCH v2 11/11] memory: ref/unref memory across address_space_map/unmap, Paolo Bonzini, 2013/06/28
- [Qemu-devel] [PATCH v2 01/11] memory: add owner argument to initialization functions, Paolo Bonzini, 2013/06/28