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[Qemu-devel] [PATCH 25/66] exec: check MRU in qemu_ram_addr_from_host
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PATCH 25/66] exec: check MRU in qemu_ram_addr_from_host |
Date: |
Thu, 4 Jul 2013 17:13:21 +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 e3ac1a1..69af46e 100644
--- a/exec.c
+++ b/exec.c
@@ -1400,18 +1400,26 @@ 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 14/66] ioport: Switch dispatching to memory core layer, (continued)
- [Qemu-devel] [PATCH 14/66] ioport: Switch dispatching to memory core layer, Paolo Bonzini, 2013/07/04
- [Qemu-devel] [PATCH 16/66] vmport: Disentangle read handler type from portio, Paolo Bonzini, 2013/07/04
- [Qemu-devel] [PATCH 15/66] ioport: Remove unused old dispatching services, Paolo Bonzini, 2013/07/04
- [Qemu-devel] [PATCH 17/66] ioport: Move portio types to ioport.h, Paolo Bonzini, 2013/07/04
- [Qemu-devel] [PATCH 19/66] memory: destroy phys_sections one by one, Paolo Bonzini, 2013/07/04
- [Qemu-devel] [PATCH 20/66] exec: simplify destruction of the phys map, Paolo Bonzini, 2013/07/04
- [Qemu-devel] [PATCH 21/66] memory: add getter for owner, Paolo Bonzini, 2013/07/04
- [Qemu-devel] [PATCH 22/66] memory: add ref/unref, Paolo Bonzini, 2013/07/04
- [Qemu-devel] [PATCH 23/66] memory: introduce memory_region_present, Paolo Bonzini, 2013/07/04
- [Qemu-devel] [PATCH 24/66] memory: add ref/unref calls, Paolo Bonzini, 2013/07/04
- [Qemu-devel] [PATCH 25/66] exec: check MRU in qemu_ram_addr_from_host,
Paolo Bonzini <=
- [Qemu-devel] [PATCH 26/66] exec: move qemu_ram_addr_from_host_nofail to cputlb.c, Paolo Bonzini, 2013/07/04
- [Qemu-devel] [PATCH 27/66] memory: return MemoryRegion from qemu_ram_addr_from_host, Paolo Bonzini, 2013/07/04
- [Qemu-devel] [PATCH 28/66] exec: reorganize address_space_map, Paolo Bonzini, 2013/07/04
- [Qemu-devel] [PATCH 29/66] memory: ref/unref memory across address_space_map/unmap, Paolo Bonzini, 2013/07/04
- [Qemu-devel] [PATCH 30/66] escc: rename struct to ESCCState, Paolo Bonzini, 2013/07/04
- [Qemu-devel] [PATCH 31/66] vga: pass owner to vga_init, Paolo Bonzini, 2013/07/04
- [Qemu-devel] [PATCH 32/66] vga: pass owner to vga_common_init, Paolo Bonzini, 2013/07/04
- [Qemu-devel] [PATCH 33/66] vga: pass owner to cirrus_init_common, Paolo Bonzini, 2013/07/04
- [Qemu-devel] [PATCH 34/66] vga: pass owner to vga_init_vbe, Paolo Bonzini, 2013/07/04