From 578bc7a06462fd71c66d1562c457b01da307a7b6 Mon Sep 17 00:00:00 2001 From: Igor Mammedov Date: Fri, 24 Sep 2021 08:27:35 -0400 Subject: [PATCH] acpi: build_mcfg: use acpi_table_begin()/acpi_table_end() instead of build_header() it replaces error-prone pointer arithmetic for build_header() API, with 2 calls to start and finish table creation, which hides offsets magic from API user. Signed-off-by: Igor Mammedov Reviewed-by: Eric Auger Message-Id: <20210924122802.1455362-9-imammedo@redhat.com> Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- hw/acpi/pci.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) diff --git a/hw/acpi/pci.c b/hw/acpi/pci.c index 75b1103ec4..20b70dcd81 100644 --- a/hw/acpi/pci.c +++ b/hw/acpi/pci.c @@ -28,19 +28,20 @@ #include "hw/acpi/pci.h" #include "hw/pci/pcie_host.h" +/* + * PCI Firmware Specification, Revision 3.0 + * 4.1.2 MCFG Table Description. + */ void build_mcfg(GArray *table_data, BIOSLinker *linker, AcpiMcfgInfo *info, const char *oem_id, const char *oem_table_id) { - int mcfg_start = table_data->len; + AcpiTable table = { .sig = "MCFG", .rev = 1, + .oem_id = oem_id, .oem_table_id = oem_table_id }; + + acpi_table_begin(&table, table_data); - /* - * PCI Firmware Specification, Revision 3.0 - * 4.1.2 MCFG Table Description. - */ - acpi_data_push(table_data, sizeof(AcpiTableHeader)); /* Reserved */ build_append_int_noprefix(table_data, 0, 8); - /* * Memory Mapped Enhanced Configuration Space Base Address Allocation * Structure @@ -56,6 +57,5 @@ void build_mcfg(GArray *table_data, BIOSLinker *linker, AcpiMcfgInfo *info, /* Reserved */ build_append_int_noprefix(table_data, 0, 4); - build_header(linker, table_data, (void *)(table_data->data + mcfg_start), - "MCFG", table_data->len - mcfg_start, 1, oem_id, oem_table_id); + acpi_table_end(linker, &table); }