Re: [Qemu-devel] [PATCH v4 02/15] tests: acpi: make acpi_fetch_table() take size of fetched table pointer

[Wei Yang <richardw.yang@linux.intel.com>]

On Thu, May 02, 2019 at 04:51:50PM +0200, Igor Mammedov wrote:
>Currently acpi_fetch_table() assumes 32 bit size of table pointer
>in ACPI tables. However X_foo variants are 64 bit, prepare
>acpi_fetch_table() to handle both by adding an argument
>for addr_ptr pointed entry size. Follow up commits will use that
>to read XSDT and X_foo entries in ACPI tables.
>
>Signed-off-by: Igor Mammedov <imammedo@redhat.com>

Reviewed-by: Wei Yang <richardw.yang@linux.intel.com>

>---
> tests/acpi-utils.h       |  2 +-
> tests/acpi-utils.c       | 10 ++++++----
> tests/bios-tables-test.c |  8 ++++----
> tests/vmgenid-test.c     |  4 ++--
> 4 files changed, 13 insertions(+), 11 deletions(-)
>
>diff --git a/tests/acpi-utils.h b/tests/acpi-utils.h
>index 4cd5553..92285b7 100644
>--- a/tests/acpi-utils.h
>+++ b/tests/acpi-utils.h
>@@ -49,7 +49,7 @@ uint32_t acpi_find_rsdp_address(QTestState *qts);
> uint64_t acpi_get_xsdt_address(uint8_t *rsdp_table);
> void acpi_fetch_rsdp_table(QTestState *qts, uint32_t addr, uint8_t *rsdp_table);
> void acpi_fetch_table(QTestState *qts, uint8_t **aml, uint32_t *aml_len,
>-                      const uint8_t *addr_ptr, const char *sig,
>+                      const uint8_t *addr_ptr, int addr_size, const char *sig,
>                       bool verify_checksum);
> 
> #endif  /* TEST_ACPI_UTILS_H */
>diff --git a/tests/acpi-utils.c b/tests/acpi-utils.c
>index 633d8f5..644c87b 100644
>--- a/tests/acpi-utils.c
>+++ b/tests/acpi-utils.c
>@@ -91,13 +91,15 @@ void acpi_fetch_rsdp_table(QTestState *qts, uint32_t addr, uint8_t *rsdp_table)
>  *  actual one.
>  */
> void acpi_fetch_table(QTestState *qts, uint8_t **aml, uint32_t *aml_len,
>-                      const uint8_t *addr_ptr, const char *sig,
>+                      const uint8_t *addr_ptr, int addr_size, const char *sig,
>                       bool verify_checksum)
> {
>-    uint32_t addr, len;
>+    uint32_t len;
>+    uint64_t addr = 0;
> 
>-    memcpy(&addr, addr_ptr , sizeof(addr));
>-    addr = le32_to_cpu(addr);
>+    g_assert(addr_size == 4 || addr_size == 8);
>+    memcpy(&addr, addr_ptr , addr_size);
>+    addr = le64_to_cpu(addr);
>     qtest_memread(qts, addr + 4, &len, 4); /* Length of ACPI table */
>     *aml_len = le32_to_cpu(len);
>     *aml = g_malloc0(*aml_len);
>diff --git a/tests/bios-tables-test.c b/tests/bios-tables-test.c
>index 6a678bf..86b592c 100644
>--- a/tests/bios-tables-test.c
>+++ b/tests/bios-tables-test.c
>@@ -114,14 +114,14 @@ static void test_acpi_rsdt_table(test_data *data)
> 
>     /* read RSDT table */
>     acpi_fetch_table(data->qts, &rsdt.aml, &rsdt.aml_len,
>-                     &data->rsdp_table[16 /* RsdtAddress */], "RSDT", true);
>+                     &data->rsdp_table[16 /* RsdtAddress */], 4, "RSDT", true);
> 
>     /* Load all tables and add to test list directly RSDT referenced tables */
>     ACPI_FOREACH_RSDT_ENTRY(rsdt.aml, rsdt.aml_len, ent, 4 /* Entry size */) {
>         AcpiSdtTable ssdt_table = {};
> 
>         acpi_fetch_table(data->qts, &ssdt_table.aml, &ssdt_table.aml_len, ent,
>-                         NULL, true);
>+                         4, NULL, true);
>         /* Add table to ASL test tables list */
>         g_array_append_val(data->tables, ssdt_table);
>     }
>@@ -139,11 +139,11 @@ static void test_acpi_fadt_table(test_data *data)
> 
>     /* Since DSDT/FACS isn't in RSDT, add them to ASL test list manually */
>     acpi_fetch_table(data->qts, &table.aml, &table.aml_len,
>-                     fadt_aml + 36 /* FIRMWARE_CTRL */, "FACS", false);
>+                     fadt_aml + 36 /* FIRMWARE_CTRL */, 4, "FACS", false);
>     g_array_append_val(data->tables, table);
> 
>     acpi_fetch_table(data->qts, &table.aml, &table.aml_len,
>-                     fadt_aml + 40 /* DSDT */, "DSDT", true);
>+                     fadt_aml + 40 /* DSDT */, 4, "DSDT", true);
>     g_array_append_val(data->tables, table);
> 
>     memset(fadt_aml + 36, 0, 4); /* sanitize FIRMWARE_CTRL ptr */
>diff --git a/tests/vmgenid-test.c b/tests/vmgenid-test.c
>index f400184..85d8e64 100644
>--- a/tests/vmgenid-test.c
>+++ b/tests/vmgenid-test.c
>@@ -42,12 +42,12 @@ static uint32_t acpi_find_vgia(QTestState *qts)
> 
>     acpi_fetch_rsdp_table(qts, rsdp_offset, rsdp_table);
>     acpi_fetch_table(qts, &rsdt, &rsdt_len, &rsdp_table[16 /* RsdtAddress */],
>-                     "RSDT", true);
>+                     4, "RSDT", true);
> 
>     ACPI_FOREACH_RSDT_ENTRY(rsdt, rsdt_len, ent, 4 /* Entry size */) {
>         uint8_t *table_aml;
> 
>-        acpi_fetch_table(qts, &table_aml, &table_length, ent, NULL, true);
>+        acpi_fetch_table(qts, &table_aml, &table_length, ent, 4, NULL, true);
>         if (!memcmp(table_aml + 16 /* OEM Table ID */, "VMGENID", 7)) {
>             uint32_t vgia_val;
>             uint8_t *aml = &table_aml[36 /* AML byte-code start */];
>-- 
>2.7.4

-- 
Wei Yang
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