qemu/smbios-Add-missing-member-of-type-4-for-smbios-3.0.patch

From 2b8ad77678da175cb92c902955cb85827e661de3 Mon Sep 17 00:00:00 2001
From: Ying Fang <fangying1@huawei.com>
Date: Tue, 14 Apr 2020 14:53:44 +0800
Subject: [PATCH] smbios: Add missing member of type 4 for smbios 3.0

According to smbios 3.0 spec, for processor information (type 4),
it adds three new members (Core Count 2, Core enabled 2, thread count 2) for 3.0, Without this three members, we can not get correct cpu frequency from dmi,
Because it will failed to check the length of Processor Infomation in DMI.

The corresponding codes in kernel is like:
    if (dm->type == DMI_ENTRY_PROCESSOR &&
        dm->length >= DMI_ENTRY_PROCESSOR_MIN_LENGTH) {
        u16 val = (u16)get_unaligned((const u16 *)
                (dmi_data + DMI_PROCESSOR_MAX_SPEED));
        *mhz = val > *mhz ? val : *mhz;
    }

Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
---
 hw/smbios/smbios.c           | 4 +++-
 include/hw/firmware/smbios.h | 3 +++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/hw/smbios/smbios.c b/hw/smbios/smbios.c
index 7bcd67b0..51b00d44 100644
--- a/hw/smbios/smbios.c
+++ b/hw/smbios/smbios.c
@@ -603,7 +603,9 @@ static void smbios_build_type_4_table(MachineState *ms, unsigned instance)
     t->thread_count = ms->smp.threads;
     t->processor_characteristics = cpu_to_le16(0x02); /* Unknown */
     t->processor_family2 = cpu_to_le16(0x01); /* Other */
-
+    t->corecount2 = 0;
+    t->enabledcorecount2 = 0;
+    t->threadcount2 = 0;
     SMBIOS_BUILD_TABLE_POST;
     smbios_type4_count++;
 }
diff --git a/include/hw/firmware/smbios.h b/include/hw/firmware/smbios.h
index 02a0ced0..6887bca4 100644
--- a/include/hw/firmware/smbios.h
+++ b/include/hw/firmware/smbios.h
@@ -193,6 +193,9 @@ struct smbios_type_4 {
     uint8_t thread_count;
     uint16_t processor_characteristics;
     uint16_t processor_family2;
+    uint16_t corecount2;
+    uint16_t enabledcorecount2;
+    uint16_t threadcount2;
 } QEMU_PACKED;

 /* SMBIOS type 11 - OEM strings */
--
2.23.0