From fe6567d5fddfb7501a352c5e080a9eecf7b89177 Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Tue, 31 Mar 2015 14:10:22 +0200 Subject: 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 Signed-off-by: Paolo Bonzini --- include/hw/pci-host/q35.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') 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; -- cgit v1.2.3-55-g7522