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[Qemu-devel] [PATCH 35/40] exec: check MRU in qemu_ram_addr_from_host
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PATCH 35/40] exec: check MRU in qemu_ram_addr_from_host |
Date: |
Tue, 7 May 2013 16:17:13 +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 files changed, 10 insertions(+), 2 deletions(-)
diff --git a/exec.c b/exec.c
index f163a55..2914936 100644
--- a/exec.c
+++ b/exec.c
@@ -1412,18 +1412,26 @@ 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
--
1.7.1
- Re: [Qemu-devel] [PATCH 40/40] memory: add reference counting to FlatView, (continued)
[Qemu-devel] [PATCH 09/40] memory: create FlatView for new address spaces, Paolo Bonzini, 2013/05/07
[Qemu-devel] [PATCH 38/40] memory: access FlatView from a local variable, Paolo Bonzini, 2013/05/07
[Qemu-devel] [PATCH 37/40] memory: ref/unref memory across address_space_map/unmap, Paolo Bonzini, 2013/05/07
[Qemu-devel] [PATCH 33/40] pci-assign: add memory_region_set_owner calls, Paolo Bonzini, 2013/05/07
[Qemu-devel] [PATCH 31/40] isa/portio: allow setting an owner, Paolo Bonzini, 2013/05/07
[Qemu-devel] [PATCH 36/40] memory: return MemoryRegion from qemu_ram_addr_from_host, Paolo Bonzini, 2013/05/07
[Qemu-devel] [PATCH 35/40] exec: check MRU in qemu_ram_addr_from_host,
Paolo Bonzini <=
[Qemu-devel] [PATCH 34/40] vfio: add memory_region_set_owner calls, Paolo Bonzini, 2013/05/07
[Qemu-devel] [PATCH 39/40] memory: use a new FlatView pointer on every topology update, Paolo Bonzini, 2013/05/07
[Qemu-devel] [PATCH 01/40] memory: assert that PhysPageEntry's ptr does not overflow, Paolo Bonzini, 2013/05/07
- Re: [Qemu-devel] [PATCH 01/40] memory: assert that PhysPageEntry's ptr does not overflow, Peter Maydell, 2013/05/07
- Re: [Qemu-devel] [PATCH 01/40] memory: assert that PhysPageEntry's ptr does not overflow, Paolo Bonzini, 2013/05/07
- Re: [Qemu-devel] [PATCH 01/40] memory: assert that PhysPageEntry's ptr does not overflow, Peter Maydell, 2013/05/07
- Re: [Qemu-devel] [PATCH 01/40] memory: assert that PhysPageEntry's ptr does not overflow, liu ping fan, 2013/05/08
- Re: [Qemu-devel] [PATCH 01/40] memory: assert that PhysPageEntry's ptr does not overflow, Paolo Bonzini, 2013/05/09
[Qemu-devel] [PATCH 03/40] memory: Replace open-coded memory_region_is_romd, Paolo Bonzini, 2013/05/07