xemu/hw/i386
Michael Roth 413a674507 hw/i386/sev: Use guest_memfd for legacy ROMs
Current SNP guest kernels will attempt to access these regions with
with C-bit set, so guest_memfd is needed to handle that. Otherwise,
kvm_convert_memory() will fail when the guest kernel tries to access it
and QEMU attempts to call KVM_SET_MEMORY_ATTRIBUTES to set these ranges
to private.

Whether guests should actually try to access ROM regions in this way (or
need to deal with legacy ROM regions at all), is a separate issue to be
addressed on kernel side, but current SNP guest kernels will exhibit
this behavior and so this handling is needed to allow QEMU to continue
running existing SNP guest kernels.

Signed-off-by: Michael Roth <michael.roth@amd.com>
[pankaj: Added sev_snp_enabled() check]
Signed-off-by: Pankaj Gupta <pankaj.gupta@amd.com>
Message-ID: <20240530111643.1091816-28-pankaj.gupta@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-06-05 11:01:06 +02:00
..
kvm hw/xen_evtchn: Initialize flush_kvm_routes 2024-04-02 16:15:07 +02:00
xen memory: Add Error** argument to the global_dirty_log routines 2024-04-23 18:36:01 -04:00
Kconfig kconfig: express dependency of individual boards on libfdt 2024-05-10 15:45:15 +02:00
acpi-build.c hw/i386/acpi-build: Add support for SRAT Generic Initiator structures 2024-03-12 17:56:55 -04:00
acpi-build.h hw/acpi/ich9: Enable ACPI PCI hot-plug 2021-07-16 04:33:35 -04:00
acpi-common.c hw/i386/acpi: Set PCAT_COMPAT bit only when pic is not disabled 2024-04-23 17:35:25 +02:00
acpi-common.h hw/i386/acpi: Declare pc_madt_cpu_entry() in 'acpi-common.h' 2024-02-20 20:34:21 +03:00
acpi-microvm.c hw/i386/acpi-microvm.c: Use common function to add virtio in DSDT 2024-01-10 18:47:46 +10:00
acpi-microvm.h microvm/acpi: add minimal acpi support 2020-09-17 14:16:19 +02:00
amd_iommu-stub.c amd_iommu: report x2APIC support to the operating system 2024-02-14 06:09:32 -05:00
amd_iommu.c hw/i386/pc: Rename "bus" attribute to "pcibus" 2024-02-27 09:37:30 +01:00
amd_iommu.h amd_iommu: report x2APIC support to the operating system 2024-02-14 06:09:32 -05:00
e820_memory_layout.c hw/i386/e820: remove legacy reserved entries for e820 2022-11-02 06:56:31 -04:00
e820_memory_layout.h hw/i386/e820: remove legacy reserved entries for e820 2022-11-02 06:56:31 -04:00
fw_cfg.c i386: correctly select code in hw/i386 that depends on other components 2024-05-10 15:45:15 +02:00
fw_cfg.h smbios: get rid of global smbios_ep_type 2024-03-18 08:42:45 -04:00
intel_iommu.c hw/i386/pc: Rename "bus" attribute to "pcibus" 2024-02-27 09:37:30 +01:00
intel_iommu_internal.h intel-iommu: Report interrupt remapping faults, fix return value 2023-10-22 05:18:17 -04:00
meson.build hw/i386: move rtc-reset-reinjection command out of hw/rtc 2024-05-10 15:45:15 +02:00
microvm-dt.c hw/rtc/mc146818rtc: QOM'ify io_base offset 2022-06-11 11:44:50 +02:00
microvm-dt.h microvm: add device tree support. 2021-11-02 17:24:17 +01:00
microvm.c hw/i386: Have x86_bios_rom_init() take X86MachineState rather than MachineState 2024-05-08 19:43:23 +02:00
monitor.c hw/i386: move rtc-reset-reinjection command out of hw/rtc 2024-05-10 15:45:15 +02:00
multiboot.c bulk: Rename TARGET_FMT_plx -> HWADDR_FMT_plx 2023-01-18 11:14:34 +01:00
multiboot.h target/i386: use DMA-enabled multiboot ROM for new-enough QEMU machine types 2021-11-02 15:57:27 +01:00
pc.c hw/i386/sev: Use guest_memfd for legacy ROMs 2024-06-05 11:01:06 +02:00
pc_piix.c hw/i386/pc_sysfw: Alias rather than copy isa-bios region 2024-05-22 15:53:30 +02:00
pc_q35.c hw/i386/pc_sysfw: Alias rather than copy isa-bios region 2024-05-22 15:53:30 +02:00
pc_sysfw.c hw/i386/sev: Use guest_memfd for legacy ROMs 2024-06-05 11:01:06 +02:00
pc_sysfw_ovmf-stubs.c hw/i386: Introduce X86_FW_OVMF Kconfig symbol 2021-07-14 22:28:58 +02:00
pc_sysfw_ovmf.c hw/i386: Replace magic number with field length calculation 2022-03-06 05:08:23 -05:00
port92.c hw/i386/port92: Add missing 'hw/isa/isa.h' header 2024-02-20 20:34:21 +03:00
sgx-epc.c Mark remaining global TypeInfo instances as const 2022-02-21 13:30:20 +00:00
sgx-stub.c target/i386: the sgx_epc_get_section stub is reachable 2023-12-31 09:11:27 +01:00
sgx.c hw/i386/sgx: Use QDev API 2024-02-27 09:37:30 +01:00
trace-events vmmouse: replace DPRINTF with tracing 2023-09-12 10:37:01 +04:00
trace.h trace: switch position of headers to what Meson requires 2020-08-21 06:18:24 -04:00
vapic.c hw/i386: Rename kvmvapic.c -> vapic.c 2024-03-09 18:51:45 +01:00
vmmouse.c hw/i386: Constify VMState 2023-12-29 11:17:30 +11:00
vmport.c Do not include cpu.h if it's not really necessary 2021-05-02 17:24:51 +02:00
x86-common.c hw/i386/sev: Add support to encrypt BIOS when SEV-SNP is enabled 2024-06-05 11:01:06 +02:00
x86-cpu.c hw/i386: split x86.c in multiple parts 2024-05-10 15:45:15 +02:00
x86-iommu-stub.c hw/i386/pc: Remove x86_iommu_get_type() 2021-11-01 18:49:10 -04:00
x86-iommu.c hw/i386/pc: Rename "bus" attribute to "pcibus" 2024-02-27 09:37:30 +01:00
x86.c i386: Support module_id in X86CPUTopoIDs 2024-05-22 19:43:29 +02:00