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qemu/hw/i386
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Jason Wang 0192d6677c intel-iommu: ignore leaf SNP bit in scalable mode 
When booting with scalable mode, I hit this error:

qemu-system-x86_64: vtd_iova_to_slpte: detected splte reserve non-zero iova=0xfffff002, level=0x1slpte=0x102681803)
qemu-system-x86_64: vtd_iommu_translate: detected translation failure (dev=01:00:00, iova=0xfffff002)
qemu-system-x86_64: New fault is not recorded due to compression of faults

This is because the SNP bit is set for second level page table since
Linux kernel commit 6c00612d0cba1 ("iommu/vt-d: Report right snoop
capability when using FL for IOVA") even if SC is not supported by the
hardware.

To unbreak the guest, ignore the leaf SNP bit for scalable mode
first. In the future we may consider to add SC support.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20211129033618.3857-1-jasowang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
2021-11-29 08:49:36 -05:00
..
kvm i386/kvm: Replace abs64() with uabs64() from host-utils 2021-09-29 19:37:38 +10:00
xen memory: make global_dirty_tracking a bitmask 2021-11-01 22:56:43 +01:00
acpi-build.c hw/i386/acpi-build: Deny control on PCIe Native Hot-plug in _OSC 2021-11-15 09:44:46 -05:00
acpi-build.h hw/acpi/ich9: Enable ACPI PCI hot-plug 2021-07-16 04:33:35 -04:00
acpi-common.c acpi: x86: madt: use build_append_int_noprefix() API to compose MADT table 2021-10-05 17:30:57 -04:00
acpi-common.h misc: Correct relative include path 2021-06-05 21:10:42 +02:00
acpi-microvm.c acpi: build_dsdt_microvm: use acpi_table_begin()/acpi_table_end() instead of build_header() 2021-10-05 17:30:57 -04:00
acpi-microvm.h microvm/acpi: add minimal acpi support 2020-09-17 14:16:19 +02:00
amd_iommu.c hw/i386/pc: Remove x86_iommu_get_type() 2021-11-01 18:49:10 -04:00
amd_iommu.h Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
e820_memory_layout.c hw/i386/pc: Extract e820 memory layout code 2019-09-16 17:13:07 +02:00
e820_memory_layout.h hw/i386/pc: Extract e820 memory layout code 2019-09-16 17:13:07 +02:00
fw_cfg.c hw/i386/fw_cfg: Set SGX bits in feature control fw_cfg accordingly 2021-09-30 15:30:24 +02:00
fw_cfg.h acpi: factor out fw_cfg_add_acpi_dsdt() 2020-06-24 17:18:28 -04:00
generic_event_device_x86.c acpi: ged: add x86 device variant. 2020-09-17 14:16:19 +02:00
intel_iommu_internal.h intel-iommu: ignore leaf SNP bit in scalable mode 2021-11-29 08:49:36 -05:00
intel_iommu.c intel-iommu: ignore leaf SNP bit in scalable mode 2021-11-29 08:49:36 -05:00
Kconfig hw/i386/pc: Allow instantiating a virtio-iommu device 2021-11-01 18:49:10 -04:00
kvmvapic.c Do not include cpu.h if it's not really necessary 2021-05-02 17:24:51 +02:00
meson.build microvm: add device tree support. 2021-11-02 17:24:17 +01:00
microvm-dt.c microvm: check g_file_set_contents() return value 2021-11-22 11:14:28 +01:00
microvm-dt.h microvm: add device tree support. 2021-11-02 17:24:17 +01:00
microvm.c * Build system fixes and cleanups 2021-11-03 13:07:30 -04:00
multiboot.c target/i386: use DMA-enabled multiboot ROM for new-enough QEMU machine types 2021-11-02 15:57:27 +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_piix.c target/i386: move linuxboot_dma_enabled to X86MachineState 2021-11-02 15:57:27 +01:00
pc_q35.c hw/acpi/ich9: Add compat prop to keep HPC bit set for 6.1 machine type 2021-11-15 09:44:46 -05:00
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: Introduce X86_FW_OVMF Kconfig symbol 2021-07-14 22:28:58 +02:00
pc_sysfw.c target/i386/sev: Declare system-specific functions in 'sev.h' 2021-10-13 10:47:49 +02:00
pc.c hw/acpi/ich9: Add compat prop to keep HPC bit set for 6.1 machine type 2021-11-15 09:44:46 -05:00
port92.c Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
sgx-epc.c target/i386: sgx: mark device not user creatable 2021-11-09 18:51:53 +01:00
sgx-stub.c hw/i386/sgx: Move qmp_query_sgx() and hmp_info_sgx() to hw/i386/sgx.c 2021-10-13 10:47:50 +02:00
sgx.c sgx: Reset the vEPC regions during VM reboot 2021-11-10 22:57:40 +01:00
trace-events docs: fix references to docs/devel/tracing.rst 2021-06-02 06:51:09 +02:00
trace.h trace: switch position of headers to what Meson requires 2020-08-21 06:18:24 -04:00
vmmouse.c hw/i386: fix vmmouse registration 2021-11-02 15:57:27 +01:00
vmport.c Do not include cpu.h if it's not really necessary 2021-05-02 17:24:51 +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: Move IOMMU singleton into PCMachineState 2021-11-01 18:49:10 -04:00
x86.c target/i386: use DMA-enabled multiboot ROM for new-enough QEMU machine types 2021-11-02 15:57:27 +01:00