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[Qemu-devel] [PATCH 13/40] memory: Introduce address_space_lookup_region
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PATCH 13/40] memory: Introduce address_space_lookup_region |
Date: |
Tue, 7 May 2013 16:16:51 +0200 |
From: Jan Kiszka <address@hidden>
This introduces a wrapper for phys_page_find (before we complicate
address_space_translate with IOMMU translation). This function will
also encapsulate locking and reference counting when we introduce
BQL-free dispatching.
Signed-off-by: Jan Kiszka <address@hidden>
Signed-off-by: Paolo Bonzini <address@hidden>
---
exec.c | 8 +++++++-
1 files changed, 7 insertions(+), 1 deletions(-)
diff --git a/exec.c b/exec.c
index 9709bc4..6efad6d 100644
--- a/exec.c
+++ b/exec.c
@@ -198,13 +198,19 @@ static MemoryRegionSection
*phys_page_find(AddressSpaceDispatch *d, hwaddr index
return &phys_sections[lp.ptr];
}
+static MemoryRegionSection *address_space_lookup_region(AddressSpace *as,
+ hwaddr addr)
+{
+ return phys_page_find(as->dispatch, addr >> TARGET_PAGE_BITS);
+}
+
MemoryRegionSection *address_space_translate(AddressSpace *as, hwaddr addr,
hwaddr *xlat, hwaddr *plen,
bool is_write)
{
MemoryRegionSection *section;
- section = phys_page_find(as->dispatch, addr >> TARGET_PAGE_BITS);
+ section = address_space_lookup_region(as, addr);
/* Compute offset with MemoryRegionSection */
addr -= section->offset_within_address_space;
*plen = MIN(section->size - addr, *plen);
--
1.7.1
- Re: [Qemu-devel] [PATCH 00/40] Memory-related changes sneak peek for 1.6, (continued)
- Re: [Qemu-devel] [PATCH 00/40] Memory-related changes sneak peek for 1.6, Peter Maydell, 2013/05/07
- Re: [Qemu-devel] [PATCH 00/40] Memory-related changes sneak peek for 1.6, Peter Maydell, 2013/05/07
- [Qemu-devel] [PATCH 00/40] Memory-related changes sneak peek for 1.6, Paolo Bonzini, 2013/05/07
- [Qemu-devel] [PATCH 13/40] memory: Introduce address_space_lookup_region,
Paolo Bonzini <=
- [Qemu-devel] [PATCH 14/40] memory: iommu support, Paolo Bonzini, 2013/05/07
- [Qemu-devel] [PATCH 12/40] memory: add address_space_translate, Paolo Bonzini, 2013/05/07
- [Qemu-devel] [PATCH 20/40] pci: use memory core for iommu support, Paolo Bonzini, 2013/05/07
- Re: [Qemu-devel] [PATCH 20/40] pci: use memory core for iommu support, Alexey Kardashevskiy, 2013/05/10