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| author |   Isaku Yamahata <isaku.yamahata@intel.com> | 2024-02-29 01:36:55 -0500 |
|---|---|---|
| committer |   Paolo Bonzini <pbonzini@redhat.com> | 2024-04-23 17:35:26 +0200 |
| commit | 565f4768bb9cf840b2f8cca41483bb91aa3196a3 (patch) | |
| tree | 150a7ff1d2155a0e6d8a1ca213db2873ed87c404 /plugins/api.c | |
| parent | kvm/tdx: Don't complain when converting vMMIO region to shared (diff) | |
| download | qemu-565f4768bb9cf840b2f8cca41483bb91aa3196a3.tar.xz qemu-565f4768bb9cf840b2f8cca41483bb91aa3196a3.zip | |
kvm/tdx: Ignore memory conversion to shared of unassigned region
TDX requires vMMIO region to be shared. For KVM, MMIO region is the region
which kvm memslot isn't assigned to (except in-kernel emulation).
qemu has the memory region for vMMIO at each device level.
While OVMF issues MapGPA(to-shared) conservatively on 32bit PCI MMIO
region, qemu doesn't find corresponding vMMIO region because it's before
PCI device allocation and memory_region_find() finds the device region, not
PCI bus region. It's safe to ignore MapGPA(to-shared) because when guest
accesses those region they use GPA with shared bit set for vMMIO. Ignore
memory conversion request of non-assigned region to shared and return
success. Otherwise OVMF is confused and panics there.
Signed-off-by: Isaku Yamahata <isaku.yamahata@intel.com>
Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
Message-ID: <20240229063726.610065-35-xiaoyao.li@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'plugins/api.c')
0 files changed, 0 insertions, 0 deletions