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authorPaolo Bonzini <pbonzini@redhat.com>2015-03-31 14:10:22 +0200
committerPaolo Bonzini <pbonzini@redhat.com>2015-06-05 17:36:39 +0200
commitfe6567d5fddfb7501a352c5e080a9eecf7b89177 (patch)
tree218595cffdd4f6c5119d454ee99273987b290e76 /include/hw/pci-host
parent2001d0cd6d55e5efa9956fa8ff8b89034d6a4329 (diff)
hw/i386: add a separate region that tracks the SMRAME bit
This region is exported at /machine/smram. It is "empty" if SMRAME=0 and points to SMRAM if SMRAME=1. The CPU will enable/disable it as it enters or exits SMRAM. While touching nearby code, the existing memory region setup was slightly inconsistent. The smram_region is *disabled* in order to open SMRAM (because the smram_region shows the low VRAM instead of the RAM at 0xa0000). Because SMRAM is closed at startup, the smram_region must be enabled when creating the i440fx or q35 devices. Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'include/hw/pci-host')
-rw-r--r--include/hw/pci-host/q35.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/hw/pci-host/q35.h b/include/hw/pci-host/q35.h
index 96d4cdc713..4c9eacc587 100644
--- a/include/hw/pci-host/q35.h
+++ b/include/hw/pci-host/q35.h
@@ -53,6 +53,7 @@ typedef struct MCHPCIState {
MemoryRegion *address_space_io;
PAMMemoryRegion pam_regions[13];
MemoryRegion smram_region;
+ MemoryRegion smram, low_smram;
PcPciInfo pci_info;
uint8_t smm_enabled;
ram_addr_t below_4g_mem_size;