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charset="utf-8" Content-Transfer-Encoding: quoted-printable X-ZM-MESSAGEID: 1661182083708100011 Register common device reserved memory similar to how ivmd=3D parameter is handled. Signed-off-by: Marek Marczykowski-G=C3=B3recki Acked-by: Jan Beulich --- Changes in v3: - use variable initializer - use pfn_to_paddr() --- xen/drivers/passthrough/amd/iommu_acpi.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/xen/drivers/passthrough/amd/iommu_acpi.c b/xen/drivers/passthr= ough/amd/iommu_acpi.c index ac6835225bae..3b577c9b390c 100644 --- a/xen/drivers/passthrough/amd/iommu_acpi.c +++ b/xen/drivers/passthrough/amd/iommu_acpi.c @@ -1078,6 +1078,25 @@ static inline bool_t is_ivmd_block(u8 type) type =3D=3D ACPI_IVRS_TYPE_MEMORY_IOMMU); } =20 +static int __init cf_check add_one_extra_ivmd(unsigned long start, + unsigned long nr, + uint32_t id, void *ctxt) +{ + struct acpi_ivrs_memory ivmd =3D { + .header =3D { + .length =3D sizeof(ivmd), + .flags =3D ACPI_IVMD_UNITY | ACPI_IVMD_READ | ACPI_IVMD_WRITE, + .device_id =3D id, + .type =3D ACPI_IVRS_TYPE_MEMORY_ONE, + }, + }; + + ivmd.start_address =3D pfn_to_paddr(start); + ivmd.memory_length =3D pfn_to_paddr(nr); + + return parse_ivmd_block(&ivmd); +} + static int __init cf_check parse_ivrs_table(struct acpi_table_header *tabl= e) { const struct acpi_ivrs_header *ivrs_block; @@ -1121,6 +1140,8 @@ static int __init cf_check parse_ivrs_table(struct ac= pi_table_header *table) AMD_IOMMU_DEBUG("IVMD: %u command line provided entries\n", nr_ivm= d); for ( i =3D 0; !error && i < nr_ivmd; ++i ) error =3D parse_ivmd_block(user_ivmds + i); + if ( !error ) + error =3D iommu_get_extra_reserved_device_memory(add_one_extra_ivm= d, NULL); =20 /* Each IO-APIC must have been mentioned in the table. */ for ( apic =3D 0; !error && iommu_intremap && apic < nr_ioapics; ++api= c ) --=20 git-series 0.9.1