From 689ef4721a06dd724e447d8b8e2dc3622c866557 Mon Sep 17 00:00:00 2001 From: Igor Mammedov Date: Fri, 24 Sep 2021 08:27:36 -0400 Subject: [PATCH] acpi: build_hmat: 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. Also since acpi_table_begin() reserves space only for standard header while previous acpi_data_push() reserved the header + 4 bytes field, add 4 bytes 'Reserved' field into hmat_build_table_structs() which didn have it. Signed-off-by: Igor Mammedov Reviewed-by: Eric Auger Message-Id: <20210924122802.1455362-10-imammedo@redhat.com> Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- hw/acpi/hmat.c | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) diff --git a/hw/acpi/hmat.c b/hw/acpi/hmat.c index edb3fd91b2..6913ebf730 100644 --- a/hw/acpi/hmat.c +++ b/hw/acpi/hmat.c @@ -200,6 +200,8 @@ static void hmat_build_table_structs(GArray *table_data, NumaState *numa_state) HMAT_LB_Info *hmat_lb; NumaHmatCacheOptions *hmat_cache; + build_append_int_noprefix(table_data, 0, 4); /* Reserved */ + for (i = 0; i < numa_state->num_nodes; i++) { flags = 0; @@ -256,14 +258,10 @@ static void hmat_build_table_structs(GArray *table_data, NumaState *numa_state) void build_hmat(GArray *table_data, BIOSLinker *linker, NumaState *numa_state, const char *oem_id, const char *oem_table_id) { - int hmat_start = table_data->len; - - /* reserve space for HMAT header */ - acpi_data_push(table_data, 40); + AcpiTable table = { .sig = "HMAT", .rev = 2, + .oem_id = oem_id, .oem_table_id = oem_table_id }; + acpi_table_begin(&table, table_data); hmat_build_table_structs(table_data, numa_state); - - build_header(linker, table_data, - (void *)(table_data->data + hmat_start), - "HMAT", table_data->len - hmat_start, 2, oem_id, oem_table_id); + acpi_table_end(linker, &table); }