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| author | Igor Mammedov <imammedo@redhat.com> | 2021-09-24 08:27:38 -0400 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2021-10-05 17:30:57 -0400 |
| commit | de67dd1be0af2b7fb02af441254ea05cd9bc1007 (patch) | |
| tree | e1e197a665a4e2a25ba0a6219e38bb00a9e02e50 /hw | |
| parent | 7d1823beeffc43669aaf7c5bc274c30e1c16e6c2 (diff) | |
| download | qemu-de67dd1be0af2b7fb02af441254ea05cd9bc1007.zip qemu-de67dd1be0af2b7fb02af441254ea05cd9bc1007.tar.gz qemu-de67dd1be0af2b7fb02af441254ea05cd9bc1007.tar.bz2 | |
acpi: nvdimm_build_ssdt: 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 <imammedo@redhat.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Message-Id: <20210924122802.1455362-12-imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/acpi/nvdimm.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/hw/acpi/nvdimm.c b/hw/acpi/nvdimm.c index 15f6ca8..a7539cf 100644 --- a/hw/acpi/nvdimm.c +++ b/hw/acpi/nvdimm.c @@ -1274,14 +1274,15 @@ static void nvdimm_build_ssdt(GArray *table_offsets, GArray *table_data, NVDIMMState *nvdimm_state, uint32_t ram_slots, const char *oem_id) { + int mem_addr_offset; Aml *ssdt, *sb_scope, *dev; - int mem_addr_offset, nvdimm_ssdt; + AcpiTable table = { .sig = "SSDT", .rev = 1, + .oem_id = oem_id, .oem_table_id = "NVDIMM" }; acpi_add_table(table_offsets, table_data); + acpi_table_begin(&table, table_data); ssdt = init_aml_allocator(); - acpi_data_push(ssdt->buf, sizeof(AcpiTableHeader)); - sb_scope = aml_scope("\\_SB"); dev = aml_device("NVDR"); @@ -1310,8 +1311,6 @@ static void nvdimm_build_ssdt(GArray *table_offsets, GArray *table_data, aml_append(sb_scope, dev); aml_append(ssdt, sb_scope); - nvdimm_ssdt = table_data->len; - /* copy AML table into ACPI tables blob and patch header there */ g_array_append_vals(table_data, ssdt->buf->data, ssdt->buf->len); mem_addr_offset = build_append_named_dword(table_data, @@ -1323,10 +1322,13 @@ static void nvdimm_build_ssdt(GArray *table_offsets, GArray *table_data, bios_linker_loader_add_pointer(linker, ACPI_BUILD_TABLE_FILE, mem_addr_offset, sizeof(uint32_t), NVDIMM_DSM_MEM_FILE, 0); - build_header(linker, table_data, - (void *)(table_data->data + nvdimm_ssdt), - "SSDT", table_data->len - nvdimm_ssdt, 1, oem_id, "NVDIMM"); free_aml_allocator(); + /* + * must be executed as the last so that pointer patching command above + * would be executed by guest before it recalculated checksum which were + * scheduled by acpi_table_end() + */ + acpi_table_end(linker, &table); } void nvdimm_build_srat(GArray *table_data) |