search for: acpi_sig_viot

...i/tables.c +++ b/drivers/acpi/tables.c @@ -501,7 +501,7 @@ static const char * const table_sigs[] = { ACPI_SIG_WDDT, ACPI_SIG_WDRT, ACPI_SIG_DSDT, ACPI_SIG_FADT, ACPI_SIG_PSDT, ACPI_SIG_RSDT, ACPI_SIG_XSDT, ACPI_SIG_SSDT, ACPI_SIG_IORT, ACPI_SIG_NFIT, ACPI_SIG_HMAT, ACPI_SIG_PPTT, - NULL }; + ACPI_SIG_VIOT, NULL }; #define ACPI_HEADER_SIZE sizeof(struct acpi_table_header) diff --git a/drivers/acpi/viot.c b/drivers/acpi/viot.c new file mode 100644 index 000000000000..ab9a6e43ad9b --- /dev/null +++ b/drivers/acpi/viot.c @@ -0,0 +1,44 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (...

...sertions(+) diff --git a/include/acpi/actbl2.h b/include/acpi/actbl2.h index e45ced27f4c3..99c1d747e9d8 100644 --- a/include/acpi/actbl2.h +++ b/include/acpi/actbl2.h @@ -25,6 +25,7 @@ * the wrong signature. */ #define ACPI_SIG_IORT "IORT" /* IO Remapping Table */ +#define ACPI_SIG_VIOT "VIOT" /* Virtual I/O Table */ #define ACPI_SIG_IVRS "IVRS" /* I/O Virtualization Reporting Structure */ #define ACPI_SIG_LPIT "LPIT" /* Low Power Idle Table */ #define ACPI_SIG_MADT "APIC" /* Multiple APIC Descripti...

I'm seeking feedback on multi-platform support for virtio-iommu. At the moment only devicetree (DT) is supported and we don't have a pleasant solution for other platforms. Once we figure out the topology description, x86 support is trivial. Since the IOMMU manages memory accesses from other devices, the guest kernel needs to initialize the IOMMU before endpoints start issuing DMA.

I'm seeking feedback on multi-platform support for virtio-iommu. At the moment only devicetree (DT) is supported and we don't have a pleasant solution for other platforms. Once we figure out the topology description, x86 support is trivial. Since the IOMMU manages memory accesses from other devices, the guest kernel needs to initialize the IOMMU before endpoints start issuing DMA.