[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[PATCH v4 3/4] hw/smbios: Fix thread count in type4
From: |
Zhao Liu |
Subject: |
[PATCH v4 3/4] hw/smbios: Fix thread count in type4 |
Date: |
Wed, 28 Jun 2023 21:54:36 +0800 |
From: Zhao Liu <zhao1.liu@intel.com>
>From SMBIOS 3.0 specification, thread count field means:
Thread Count is the total number of threads detected by the BIOS for
this processor socket. It is a processor-wide count, not a
thread-per-core count. [1]
So here we should use threads per socket other than threads per core.
[1] SMBIOS 3.0.0, section 7.5.8, Processor Information - Thread Count
Fixes: c97294ec1b9e ("SMBIOS: Build aggregate smbios tables and entry point")
Signed-off-by: Zhao Liu <zhao1.liu@intel.com>
---
v4:
* None.
v3:
* Use the wrapped hepler to get threads per socket.
v2:
* Rename cpus_per_socket to threads_per_socket.
* Add the comment about smp.max_cpus. Thread count and core count will
be calculated in 2 ways and will add a sanity check to ensure we
don't miss any topology level.
---
hw/smbios/smbios.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/hw/smbios/smbios.c b/hw/smbios/smbios.c
index d67415d44dd8..3aae9328c014 100644
--- a/hw/smbios/smbios.c
+++ b/hw/smbios/smbios.c
@@ -713,6 +713,7 @@ static void smbios_build_type_4_table(MachineState *ms,
unsigned instance)
{
char sock_str[128];
size_t tbl_len = SMBIOS_TYPE_4_LEN_V28;
+ unsigned threads_per_socket;
if (smbios_ep_type == SMBIOS_ENTRY_POINT_TYPE_64) {
tbl_len = SMBIOS_TYPE_4_LEN_V30;
@@ -747,17 +748,19 @@ static void smbios_build_type_4_table(MachineState *ms,
unsigned instance)
SMBIOS_TABLE_SET_STR(4, asset_tag_number_str, type4.asset);
SMBIOS_TABLE_SET_STR(4, part_number_str, type4.part);
+ threads_per_socket = machine_topo_get_threads_per_socket(ms);
+
t->core_count = (ms->smp.cores > 255) ? 0xFF : ms->smp.cores;
t->core_enabled = t->core_count;
- t->thread_count = (ms->smp.threads > 255) ? 0xFF : ms->smp.threads;
+ t->thread_count = (threads_per_socket > 255) ? 0xFF : threads_per_socket;
t->processor_characteristics = cpu_to_le16(0x02); /* Unknown */
t->processor_family2 = cpu_to_le16(0x01); /* Other */
if (tbl_len == SMBIOS_TYPE_4_LEN_V30) {
t->core_count2 = t->core_enabled2 = cpu_to_le16(ms->smp.cores);
- t->thread_count2 = cpu_to_le16(ms->smp.threads);
+ t->thread_count2 = cpu_to_le16(threads_per_socket);
}
SMBIOS_BUILD_TABLE_POST;
--
2.34.1