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q35: Introduce smm_ranges property for q35-pci-host

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Add a q35 property to check whether or not SMM ranges, e.g. SMRAM, TSEG,
etc... exist for the target platform.  TDX doesn't support SMM and doesn't
play nice with QEMU modifying related guest memory ranges.

Signed-off-by: Isaku Yamahata <isaku.yamahata@linux.intel.com>
Co-developed-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
Signed-off-by: Michael Roth <michael.roth@amd.com>
Message-ID: <20240320083945.991426-19-michael.roth@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Isaku Yamahata 2024-03-20 03:39:14 -05:00 • committed by Paolo Bonzini
parent 42c11ae241
commit b07bf7b73f
4 changed files with 33 additions and 13 deletions
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1
include/hw/pci-host/q35.h
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@ -50,6 +50,7 @@ struct MCHPCIState {
MemoryRegion tseg_blackhole, tseg_window;
MemoryRegion smbase_blackhole, smbase_window;
bool has_smram_at_smbase;
bool has_smm_ranges;
Range pci_hole;
uint64_t below_4g_mem_size;
uint64_t above_4g_mem_size;