@@ -1560,6 +1560,7 @@ void acpi_build_tables_init(AcpiBuildTables *tables)
tables->table_data = g_array_new(false, true /* clear */, 1);
tables->tcpalog = g_array_new(false, true /* clear */, 1);
tables->vmgenid = g_array_new(false, true /* clear */, 1);
+ tables->hardware_errors = g_array_new(false, true /* clear */, 1);
tables->linker = bios_linker_loader_init();
}
@@ -1570,6 +1571,7 @@ void acpi_build_tables_cleanup(AcpiBuildTables *tables, bool mfre)
g_array_free(tables->table_data, true);
g_array_free(tables->tcpalog, mfre);
g_array_free(tables->vmgenid, mfre);
+ g_array_free(tables->hardware_errors, mfre);
}
/* Build rsdt table */
new file mode 100644
@@ -0,0 +1,368 @@
+/*
+ * APEI GHES table Generation
+ *
+ * Copyright (C) 2017 huawei.
+ *
+ * Author: Dongjiu Geng <gengdongjiu@huawei.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ *
+ */
+
+#include "qemu/osdep.h"
+#include "qmp-commands.h"
+#include "hw/acpi/acpi.h"
+#include "hw/acpi/aml-build.h"
+#include "hw/acpi/hest_ghes.h"
+#include "hw/nvram/fw_cfg.h"
+#include "sysemu/sysemu.h"
+#include "qemu/error-report.h"
+
+/* The structure that stands for the layout
+ * GHES_ERRORS_FW_CFG_FILE fw_cfg blob
+ *
+ * etc/hardware_errors
+ * ==========================================
+ * +------------------+
+ * | address | +--------------+
+ * | registers | | Error Status |
+ * | +----------------+ | Data Block 0 |
+ * | |status_address0 |------------->| +------------+
+ * | +----------------+ | | CPER |
+ * | |status_address1 |----------+ | | CPER |
+ * | +----------------+ | | | .... |
+ * | |............. | | | | CPER |
+ * | +----------------+ | | +------------+
+ * | |status_address10|--------+ | | Error Status |
+ * | +----------------+ | | | Data Block 1 |
+ * | |ack_address0 |--+ | +-->| +------------+
+ * | +----------------+ | | | | CPER |
+ * | |ack_address1 |--+-+ | | | CPER |
+ * | +----------------+ | | | | | .... |
+ * | | ............. | | | | | | CPER |
+ * | +----------------+ | | | +-+------------+
+ * | |ack_address10 |--+-+-+ | | |.......... |
+ * | +----------------+ | | | | | +------------+
+ * | | ack0 |<-+ | | | | Error Status |
+ * | +----------------+ | | | | Data Block10 |
+ * | | ack1 |<---+ | +---->| +------------+
+ * | +----------------+ | | | CPER |
+ * | | .... | | | | CPER |
+ * | +--------------+ | | | | .... |
+ * | | ack10 |<---- + | | CPER |
+ * | +----------------+ +-+------------+
+ */
+struct hardware_errors_buffer {
+ /* Generic Error Status Block register */
+ uint64_t gesb_register[GHES_ACPI_HEST_NOTIFY_RESERVED];
+ uint64_t ack_register[GHES_ACPI_HEST_NOTIFY_RESERVED];
+ uint64_t ack_value[GHES_ACPI_HEST_NOTIFY_RESERVED];
+ char gesb[GHES_MAX_RAW_DATA_LENGTH][GHES_ACPI_HEST_NOTIFY_RESERVED];
+};
+
+static int ghes_record_cper(uint64_t error_block_address,
+ uint64_t error_physical_addr)
+{
+ AcpiGenericErrorStatus block;
+ AcpiGenericErrorData *gdata;
+ UefiCperSecMemErr *mem_err;
+ uint64_t current_block_length;
+ unsigned char *buffer;
+ /* memory section */
+ char mem_section_id_le[] = {0x14, 0x11, 0xBC, 0xA5, 0x64, 0x6F, 0xDE,
+ 0x4E, 0xB8, 0x63, 0x3E, 0x83, 0xED, 0x7C,
+ 0x83, 0xB1};
+
+ cpu_physical_memory_read(error_block_address, &block,
+ sizeof(AcpiGenericErrorStatus));
+
+ /* Get the current generic error status block length */
+ current_block_length = sizeof(AcpiGenericErrorStatus) +
+ le32_to_cpu(block.data_length);
+
+ /* If the Generic Error Status Block is NULL, update
+ * the block header
+ */
+ if (!block.block_status) {
+ block.block_status = ACPI_GEBS_UNCORRECTABLE;
+ block.error_severity = ACPI_CPER_SEV_RECOVERABLE;
+ }
+
+ block.data_length += cpu_to_le32(sizeof(AcpiGenericErrorData));
+ block.data_length += cpu_to_le32(sizeof(UefiCperSecMemErr));
+
+ /* check whether it runs out of the preallocated memory */
+ if ((le32_to_cpu(block.data_length) + sizeof(AcpiGenericErrorStatus)) >
+ GHES_MAX_RAW_DATA_LENGTH) {
+ error_report("Record CPER out of boundary!!!");
+ return GHES_CPER_FAIL;
+ }
+
+ /* Write back the Generic Error Status Block to guest memory */
+ cpu_physical_memory_write(error_block_address, &block,
+ sizeof(AcpiGenericErrorStatus));
+
+ /* Fill in Generic Error Data Entry */
+ buffer = g_malloc0(sizeof(AcpiGenericErrorData) +
+ sizeof(UefiCperSecMemErr));
+
+
+ memset(buffer, 0, sizeof(AcpiGenericErrorData) + sizeof(UefiCperSecMemErr));
+ gdata = (AcpiGenericErrorData *)buffer;
+
+ /* Memory section */
+ memcpy(&(gdata->section_type_le), &mem_section_id_le,
+ sizeof(mem_section_id_le));
+
+ /* error severity is recoverable */
+ gdata->error_severity = ACPI_CPER_SEV_RECOVERABLE;
+ gdata->revision = 0x300; /* the revision number is 0x300 */
+ gdata->error_data_length = cpu_to_le32(sizeof(UefiCperSecMemErr));
+
+ mem_err = (UefiCperSecMemErr *) (gdata + 1);
+
+ /* User space only handle the memory section CPER */
+
+ /* Hard code to Multi-bit ECC error */
+ mem_err->validation_bits |= cpu_to_le32(UEFI_CPER_MEM_VALID_ERROR_TYPE);
+ mem_err->error_type = cpu_to_le32(UEFI_CPER_MEM_ERROR_TYPE_MULTI_ECC);
+
+ /* Record the physical address at which the memory error occurred */
+ mem_err->validation_bits |= cpu_to_le32(UEFI_CPER_MEM_VALID_PA);
+ mem_err->physical_addr = cpu_to_le32(error_physical_addr);
+
+ /* Write back the Generic Error Data Entry to guest memory */
+ cpu_physical_memory_write(error_block_address + current_block_length,
+ buffer, sizeof(AcpiGenericErrorData) + sizeof(UefiCperSecMemErr));
+
+ g_free(buffer);
+ return GHES_CPER_OK;
+}
+
+static void
+build_address(GArray *table_data, BIOSLinker *linker,
+ uint32_t dst_patched_offset, uint32_t src_offset,
+ uint8_t address_space_id , uint8_t register_bit_width,
+ uint8_t register_bit_offset, uint8_t access_size)
+{
+ uint32_t address_size = sizeof(struct AcpiGenericAddress) -
+ offsetof(struct AcpiGenericAddress, address);
+
+ /* Address space */
+ build_append_int_noprefix(table_data, address_space_id, 1);
+ /* register bit width */
+ build_append_int_noprefix(table_data, register_bit_width, 1);
+ /* register bit offset */
+ build_append_int_noprefix(table_data, register_bit_offset, 1);
+ /* access size */
+ build_append_int_noprefix(table_data, access_size, 1);
+ acpi_data_push(table_data, address_size);
+
+ /* Patch address of ERRORS fw_cfg blob into the TABLE fw_cfg blob so OSPM
+ * can retrieve and read it. the address size is 64 bits.
+ */
+ bios_linker_loader_add_pointer(linker,
+ ACPI_BUILD_TABLE_FILE, dst_patched_offset, sizeof(uint64_t),
+ GHES_ERRORS_FW_CFG_FILE, src_offset);
+}
+
+void ghes_build_acpi(GArray *table_data, GArray *hardware_error,
+ BIOSLinker *linker)
+{
+ uint32_t ghes_start = table_data->len;
+ uint32_t address_size, ack_value_size, error_status_address_offset;
+ uint32_t read_ack_register_offset, i;
+ /*
+ * The block_req_size stands for two address and one
+ * generic error status block
+ * +---------+
+ * | address |-----------> +---------+
+ * +---------+ | CPER |
+ * | ack | | CPER |
+ * | address |----+ | CPER |
+ * +---------+ | | CPER |
+ * | ack0 |<---+ | .... |
+ * +---------+ +---------+
+ */
+ address_size = sizeof(struct AcpiGenericAddress) -
+ offsetof(struct AcpiGenericAddress, address);
+ ack_value_size = (offsetof(struct hardware_errors_buffer, gesb) -
+ offsetof(struct hardware_errors_buffer, ack_value)) /
+ GHES_ACPI_HEST_NOTIFY_RESERVED;
+
+ error_status_address_offset = ghes_start +
+ sizeof(AcpiHardwareErrorSourceTable) +
+ offsetof(AcpiGenericHardwareErrorSourceV2, error_status_address) +
+ offsetof(struct AcpiGenericAddress, address);
+
+ read_ack_register_offset = ghes_start +
+ sizeof(AcpiHardwareErrorSourceTable) +
+ offsetof(AcpiGenericHardwareErrorSourceV2, read_ack_register) +
+ offsetof(struct AcpiGenericAddress, address);
+
+ acpi_data_push(hardware_error,
+ offsetof(struct hardware_errors_buffer, ack_value));
+ for (i = 0; i < GHES_ACPI_HEST_NOTIFY_RESERVED; i++)
+ /* Initialize read ack value */
+ build_append_int_noprefix((void *)hardware_error, 1, 8);
+
+ /* Reserved the total size for ERRORS fw_cfg blob
+ */
+ acpi_data_push(hardware_error, sizeof(struct hardware_errors_buffer));
+
+ /* Allocate guest memory for the Data fw_cfg blob */
+ bios_linker_loader_alloc(linker, GHES_ERRORS_FW_CFG_FILE, hardware_error,
+ 1, false);
+ /* Reserve table header size */
+ acpi_data_push(table_data, sizeof(AcpiTableHeader));
+
+ build_append_int_noprefix(table_data, GHES_ACPI_HEST_NOTIFY_RESERVED, 4);
+
+ for (i = 0; i < GHES_ACPI_HEST_NOTIFY_RESERVED; i++) {
+ build_append_int_noprefix(table_data,
+ ACPI_HEST_SOURCE_GENERIC_ERROR_V2, 2); /* type */
+ /* source id */
+ build_append_int_noprefix(table_data, cpu_to_le16(i), 2);
+ /* related source id */
+ build_append_int_noprefix(table_data, 0xffff, 2);
+ build_append_int_noprefix(table_data, 0, 1); /* flags */
+
+ /* Currently only enable SEA and SEI notification type to avoid the
+ * kernel warning, reserve the space for other notification error source
+ */
+ if (i == ACPI_HEST_NOTIFY_SEA || i == ACPI_HEST_NOTIFY_SEI) {
+ build_append_int_noprefix(table_data, 1, 1); /* enabled */
+ } else {
+ build_append_int_noprefix(table_data, 0, 1); /* enabled */
+ }
+
+ /* The number of error status block per generic hardware error source */
+ build_append_int_noprefix(table_data, 1, 4);
+ /* Max sections per record */
+ build_append_int_noprefix(table_data, 1, 4);
+ /* Max raw data length */
+ build_append_int_noprefix(table_data, GHES_MAX_RAW_DATA_LENGTH, 4);
+
+ /* Build error Status Address*/
+ build_address(table_data, linker, error_status_address_offset + i *
+ sizeof(AcpiGenericHardwareErrorSourceV2), i * address_size,
+ AML_SYSTEM_MEMORY, 0x40, 0, 4 /* QWord access */);
+
+ /* Hardware error notification structure */
+ build_append_int_noprefix(table_data, i, 1); /* type */
+ /* length */
+ build_append_int_noprefix(table_data, sizeof(AcpiHestNotify), 1);
+ build_append_int_noprefix(table_data, 0, 26);
+
+ /* Error Status Block Length */
+ build_append_int_noprefix(table_data,
+ cpu_to_le32(GHES_MAX_RAW_DATA_LENGTH), 4);
+
+ /* Build read ack register */
+ build_address(table_data, linker, read_ack_register_offset + i *
+ sizeof(AcpiGenericHardwareErrorSourceV2),
+ offsetof(struct hardware_errors_buffer, ack_register) +
+ i * address_size, AML_SYSTEM_MEMORY, 0x40, 0,
+ 4 /* QWord access */);
+
+ /* Read ack preserve */
+ build_append_int_noprefix(table_data, cpu_to_le64(0xfffffffe), 8);
+
+ /* Read ack write */
+ build_append_int_noprefix(table_data, cpu_to_le64(0x1), 8);
+ }
+
+ for (i = 0; i < GHES_ACPI_HEST_NOTIFY_RESERVED; i++) {
+ /* Patch address of generic error status block into
+ * the address register so OSPM can retrieve and read it.
+ */
+ bios_linker_loader_add_pointer(linker,
+ GHES_ERRORS_FW_CFG_FILE, address_size * i, address_size,
+ GHES_ERRORS_FW_CFG_FILE,
+ offsetof(struct hardware_errors_buffer, gesb) +
+ i * GHES_MAX_RAW_DATA_LENGTH);
+
+ /* Patch address of read ack into the read ack register so
+ * OSPM can retrieve and read it.
+ */
+ bios_linker_loader_add_pointer(linker,
+ GHES_ERRORS_FW_CFG_FILE,
+ offsetof(struct hardware_errors_buffer, ack_register) +
+ address_size * i, address_size, GHES_ERRORS_FW_CFG_FILE,
+ offsetof(struct hardware_errors_buffer, ack_value) + i * ack_value_size);
+ }
+
+ /* Patch address of ERRORS fw_cfg blob into the ADDR fw_cfg blob
+ * so QEMU can write the ERRORS there. The address is expected to be
+ * < 4GB, but write 64 bits anyway.
+ */
+ bios_linker_loader_write_pointer(linker, GHES_DATA_ADDR_FW_CFG_FILE,
+ 0, address_size, GHES_ERRORS_FW_CFG_FILE,
+ offsetof(struct hardware_errors_buffer, gesb));
+
+ build_header(linker, table_data,
+ (void *)(table_data->data + ghes_start), "HEST",
+ table_data->len - ghes_start, 1, NULL, "GHES");
+}
+
+static GhesState ges;
+void ghes_add_fw_cfg(FWCfgState *s, GArray *hardware_error)
+{
+
+ size_t request_block_size = sizeof(uint64_t) + GHES_MAX_RAW_DATA_LENGTH;
+ size_t size = GHES_ACPI_HEST_NOTIFY_RESERVED * request_block_size;
+
+ /* Create a read-only fw_cfg file for GHES */
+ fw_cfg_add_file(s, GHES_ERRORS_FW_CFG_FILE, hardware_error->data,
+ size);
+ /* Create a read-write fw_cfg file for Address */
+ fw_cfg_add_file_callback(s, GHES_DATA_ADDR_FW_CFG_FILE, NULL, NULL,
+ &ges.ghes_addr_le, sizeof(ges.ghes_addr_le), false);
+}
+
+bool ghes_update_guest(uint32_t notify, uint64_t physical_address)
+{
+ uint64_t error_block_addr;
+ uint64_t ack_addr, ack_value = 0;
+ int loop = 0, ack_value_size;
+ bool ret = GHES_CPER_FAIL;
+
+ ack_value_size = (offsetof(struct hardware_errors_buffer, gesb) -
+ offsetof(struct hardware_errors_buffer, ack_value)) /
+ GHES_ACPI_HEST_NOTIFY_RESERVED;
+retry:
+ if (physical_address && notify < GHES_ACPI_HEST_NOTIFY_RESERVED) {
+ error_block_addr = ges.ghes_addr_le + notify * GHES_MAX_RAW_DATA_LENGTH;
+ error_block_addr = le32_to_cpu(error_block_addr);
+
+ ack_addr = ges.ghes_addr_le -
+ (GHES_ACPI_HEST_NOTIFY_RESERVED - notify) * ack_value_size;
+ cpu_physical_memory_read(ack_addr, &ack_value, ack_value_size);
+ if (!ack_value) {
+ if (loop < 3) {
+ usleep(100 * 1000);
+ loop++;
+ goto retry;
+ } else {
+ error_report("Last time OSPM does not acknowledge the error,"
+ " record CPER failed this time, set the ack value to"
+ " avoid blocking next time CPER record! exit");
+ ack_value = 1;
+ cpu_physical_memory_write(ack_addr, &ack_value, ack_value_size);
+ return ret;
+ }
+ } else {
+ /* A zero value in ghes_addr means that BIOS has not yet written
+ * the address
+ */
+ if (error_block_addr) {
+ ack_value = 0;
+ cpu_physical_memory_write(ack_addr, &ack_value, ack_value_size);
+ ret = ghes_record_cper(error_block_addr, physical_address);
+ }
+ }
+ }
+
+ return ret;
+}
@@ -45,6 +45,7 @@
#include "hw/arm/virt.h"
#include "sysemu/numa.h"
#include "kvm_arm.h"
+#include "hw/acpi/hest_ghes.h"
#define ARM_SPI_BASE 32
#define ACPI_POWER_BUTTON_DEVICE "PWRB"
@@ -778,6 +779,9 @@ void virt_acpi_build(VirtMachineState *vms, AcpiBuildTables *tables)
acpi_add_table(table_offsets, tables_blob);
build_spcr(tables_blob, tables->linker, vms);
+ acpi_add_table(table_offsets, tables_blob);
+ ghes_build_acpi(tables_blob, tables->hardware_errors, tables->linker);
+
if (nb_numa_nodes > 0) {
acpi_add_table(table_offsets, tables_blob);
build_srat(tables_blob, tables->linker, vms);
@@ -890,6 +894,8 @@ void virt_acpi_setup(VirtMachineState *vms)
fw_cfg_add_file(vms->fw_cfg, ACPI_BUILD_TPMLOG_FILE, tables.tcpalog->data,
acpi_data_len(tables.tcpalog));
+ ghes_add_fw_cfg(vms->fw_cfg, tables.hardware_errors);
+
build_state->rsdp_mr = acpi_add_rom_blob(build_state, tables.rsdp,
ACPI_BUILD_RSDP_FILE, 0);
@@ -211,6 +211,7 @@ struct AcpiBuildTables {
GArray *rsdp;
GArray *tcpalog;
GArray *vmgenid;
+ GArray *hardware_errors;
BIOSLinker *linker;
} AcpiBuildTables;
new file mode 100644
@@ -0,0 +1,47 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * Authors:
+ * Dongjiu Geng <gengdongjiu@huawei.com>
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef ACPI_GHES_H
+#define ACPI_GHES_H
+
+#include "hw/acpi/bios-linker-loader.h"
+
+#define GHES_ERRORS_FW_CFG_FILE "etc/hardware_errors"
+#define GHES_DATA_ADDR_FW_CFG_FILE "etc/hardware_errors_addr"
+
+#define GHES_GAS_ADDRESS_OFFSET 4
+#define GHES_ERROR_STATUS_ADDRESS_OFFSET 20
+#define GHES_NOTIFICATION_STRUCTURE 32
+
+#define GHES_CPER_OK 1
+#define GHES_CPER_FAIL 0
+
+#define GHES_ACPI_HEST_NOTIFY_RESERVED 11
+/* The max size in Bytes for one error block */
+#define GHES_MAX_RAW_DATA_LENGTH 0x1000
+
+
+typedef struct GhesState {
+ uint64_t ghes_addr_le;
+} GhesState;
+
+void ghes_build_acpi(GArray *table_data, GArray *hardware_error,
+ BIOSLinker *linker);
+void ghes_add_fw_cfg(FWCfgState *s, GArray *hardware_errors);
+bool ghes_update_guest(uint32_t notify, uint64_t error_physical_addr);
+#endif
This implements APEI GHES Table by passing the error CPER info to the guest via a fw_cfg_blob. After a CPER info is recorded, an SEA(Synchronous External Abort)/SEI(SError Interrupt) exception will be injected into the guest OS. Below is the table layout, the max number of error soure is 11, which is classified by notification type. etc/acpi/tables etc/hardware_errors ==================== ========================================== + +--------------------------+ +------------------+ | | HEST | | address | +--------------+ | +--------------------------+ | registers | | Error Status | | | GHES0 | | +----------------+ | Data Block 0 | | +--------------------------+ +--------->| |status_address0 |------------->| +------------+ | | ................. | | | +----------------+ | | CPER | | | error_status_address-----+-+ +------->| |status_address1 |----------+ | | CPER | | | ................. | | | +----------------+ | | | .... | | | read_ack_register--------+-+ | | ............. | | | | CPER | | | read_ack_preserve | | | +------------------+ | | +-+------------+ | | read_ack_write | | | +----->| |status_address10|--------+ | | Error Status | + +--------------------------+ | | | | +----------------+ | | | Data Block 1 | | | GHES1 | +-+-+----->| |ack_address0 |--+ | +-->| +------------+ + +--------------------------+ | | | +----------------+ | | | | CPER | | | ................. | | | +--->| |ack_address1 |--+-+ | | | CPER | | | error_status_address-----+---+ | | | +----------------+ | | | | | .... | | | ................. | | | | | ............. | | | | | | CPER | | | read_ack_register--------+-----+-+ | +----------------+ | | | +-+------------+ | | read_ack_preserve | | +->| |ack_address10 |--+-+-+ | | |.......... | | | read_ack_write | | | | +----------------+ | | | | | +------------+ + +--------------------------| | | | | ack0 |<-+ | | | | Error Status | | | ............... | | | | +----------------+ | | | | Data Block 10| + +--------------------------+ | | | | ack1 |<---+ | +---->| +------------+ | | GHES10 | | | | +----------------+ | | | CPER | + +--------------------------+ | | | | .... | | | | CPER | | | ................. | | | | +--------------+ | | | | .... | | | error_status_address-----+-----+ | | | ack10 |<---- + | | CPER | | | ................. | | | +----------------+ +-+------------+ | | read_ack_register--------+---------+ | | read_ack_preserve | | | read_ack_write | + +--------------------------+ For GHESv2 error source, the OSPM must acknowledges the error via Read Ack register. so user space must check the ack value to avoid read-write race condition. Signed-off-by: Dongjiu Geng <gengdongjiu@huawei.com> --- thanks a lot Michael and Laszlo's review and comments: change since v6: (1) update the commit message change since v5: (1) move to GHESv2 error source from GHESv1, because we maily use the GHESv2 (2) add the GHESv2 error source layout in the comments (2) add the logic to read the ack value from OSPM to avoid read-write race condition (3) including header files "aml-build.h" and "hest_ghes.h" in this patch to make it reasonable (4) calculate the fw_cfg blob offsets that should be patched in more fine-grained steps, with multiple separate increments, using: - structure type names, - sizeof operators, - offsetof macros, - and possibly a separate comment for each offset increment. (5) remove page boundary refers to 4096 in the "bios_linker_loader_alloc" (6) using build_append_int_noprefix to avoid use pointer math, so that the code is easily readable (7) change memory section definition to array from QemuUUID (8) only enable SEA/SEI notification hardware error source to avoid guest OS ACPI driver probe warning change since v4: 1. fix email threading in this series is incorrect issue change since v3: 1. remove the unnecessary include for "hw/acpi/vmgenid.h" in hw/arm/virt-acpi-build.c 2. add conversion between LE and host-endian for the CPER record 3. handle the case that run out of the preallocated memory for the CPER record 4. change to use g_malloc0 instead of g_malloc 5. change block_reqr_size name to block_rer_size 6. change QEMU coding style, that is, the operator is at the end of the line. 7. drop the ERROR_STATUS_ADDRESS_OFFSET and GAS_ADDRESS_OFFSET macros (from the header file as well), and use the offsetof to replace it. 8. remove the init_aml_allocator() / free_aml_allocator(), calculate the needed size, and push that many bytes directly to "table_data". 9. take an "OVMF header probe suppressor" into account 10.corrct HEST and CPER value assigment, for example, correct the source_id for every error source, this identifier of source_id should be unique among all error sources; 11. create only one WRITE_POINTER command, for the base address of "etc/hardware_errors". This should be done outside of the loop.The base addresses of the individual error status data blocks should be calculated in ghes_update_guest(), based on the error source / notification type 12.correct the commit message lists error sources / notification types 0 through 10 (count=11 in total). 13.correct the size calculation for GHES_DATA_ADDR_FW_CFG_FILE 14.range-checked the value of "notify" before using it as an array subscript --- hw/acpi/aml-build.c | 2 + hw/acpi/hest_ghes.c | 368 ++++++++++++++++++++++++++++++++++++++++++++ hw/arm/virt-acpi-build.c | 6 + include/hw/acpi/aml-build.h | 1 + include/hw/acpi/hest_ghes.h | 47 ++++++ 5 files changed, 424 insertions(+) create mode 100644 hw/acpi/hest_ghes.c create mode 100644 include/hw/acpi/hest_ghes.h