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charset="utf-8" This patch extends hvmloader_acpi_build_tables() to detect if MMCONFIG is available by obtaining its base address and size from the hypercall HVMOP_get_ecam_space and sets the flag ACPI_HAS_MCFG in the ACPI config if needed. This also sets the MMCONFIG area in E820 map using the same method. Signed-off-by: Thierry Escande --- tools/firmware/hvmloader/e820.c | 11 +++++++++++ tools/firmware/hvmloader/util.c | 9 +++++++++ 2 files changed, 20 insertions(+) diff --git a/tools/firmware/hvmloader/e820.c b/tools/firmware/hvmloader/e82= 0.c index 86d39544e8..ff5c270f57 100644 --- a/tools/firmware/hvmloader/e820.c +++ b/tools/firmware/hvmloader/e820.c @@ -158,6 +158,8 @@ int build_e820_table(struct e820entry *e820, unsigned long acpi_mem_end =3D acpi_enabled ? ACPI_MEMORY_DYNAMIC_START + (acpi_pages_allocated() << PAGE_SHIFT)= : RESERVED_MEMBASE; + uint64_t mmconfig_addr; + uint32_t mmconfig_size; =20 if ( !lowmem_reserved_base ) lowmem_reserved_base =3D 0xA0000; @@ -260,6 +262,15 @@ int build_e820_table(struct e820entry *e820, nr++; } =20 + /* mark MMCONFIG area */ + if ( ! hvm_get_ecam_space(&mmconfig_addr, &mmconfig_size) ) + { + e820[nr].addr =3D mmconfig_addr; + e820[nr].size =3D mmconfig_size; + e820[nr].type =3D E820_RESERVED; + nr++; + } + /* Low RAM goes here. Reserve space for special pages. */ BUG_ON(low_mem_end < MB(2)); =20 diff --git a/tools/firmware/hvmloader/util.c b/tools/firmware/hvmloader/uti= l.c index ee7a09b5bc..2cd1cadfc3 100644 --- a/tools/firmware/hvmloader/util.c +++ b/tools/firmware/hvmloader/util.c @@ -903,6 +903,8 @@ void hvmloader_acpi_build_tables(struct acpi_config *co= nfig, struct acpi_ctxt ctxt; long long tpm_version; char *end; + uint64_t mmconfig_addr; + uint32_t mmconfig_size; =20 /* Allocate and initialise the acpi info area. */ mem_hole_populate_ram(ACPI_INFO_PHYSICAL_ADDRESS >> PAGE_SHIFT, 1); @@ -953,6 +955,13 @@ void hvmloader_acpi_build_tables(struct acpi_config *c= onfig, config->pci_hi_len =3D pci_hi_mem_end - pci_hi_mem_start; } =20 + if ( ! hvm_get_ecam_space(&mmconfig_addr, &mmconfig_size) ) + { + config->table_flags |=3D ACPI_HAS_MCFG; + config->mmconfig_addr =3D mmconfig_addr; + config->mmconfig_size =3D mmconfig_size; + } + s =3D xenstore_read("platform/generation-id", "0:0"); if ( s ) { --=20 2.51.0 -- Thierry Escande | Vates XCP-ng Developer XCP-ng & Xen Orchestra - Vates solutions web: https://vates.tech