39 lines
1.5 KiB
Diff
39 lines
1.5 KiB
Diff
|
From 2b46bc9b5a148f6da198321a8396a6c2c6a1b070 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Feifei Wang1994 <wangfeifei@hygon.cn>
|
||
|
|
Date: Tue, 3 Sep 2024 08:30:43 +0000
|
||
|
|
Subject: [PATCH] backport-x86-Add-Hygon-support
|
||
|
|
|
||
|
|
This patch fix Hygon processor CPU Vendor ID detection problem
|
||
|
|
in glibc sysdep module, current glibc-2.28 doesn't recognize
|
||
|
|
Hygon CPU Vendor ID("HygonGenuine") and sets kind to arch_kind_other,
|
||
|
|
which result in incorrect zero value for __cache_sysconf() syscall.
|
||
|
|
|
||
|
|
This patch add Hygon CPU Vendor ID check, setup kind to arch_kind_amd
|
||
|
|
and reuse AMD code path, which lead to correct return value in __cache_sysconf() syscall.
|
||
|
|
Test case shows no failure with this patch in Hygon arch.
|
||
|
|
|
||
|
|
Signed-off-by: Feifei Wang <wangfeifei@hygon.cn>
|
||
|
|
---
|
||
|
|
sysdeps/x86/cpu-features.c | 5 +++--
|
||
|
|
1 file changed, 3 insertions(+), 2 deletions(-)
|
||
|
|
|
||
|
|
diff --git a/sysdeps/x86/cpu-features.c b/sysdeps/x86/cpu-features.c
|
||
|
|
index ea0b64fd..4b1a0169 100644
|
||
|
|
--- a/sysdeps/x86/cpu-features.c
|
||
|
|
+++ b/sysdeps/x86/cpu-features.c
|
||
|
|
@@ -344,8 +344,9 @@ init_cpu_features (struct cpu_features *cpu_features)
|
||
|
|
cpu_features->feature[index_arch_Prefer_No_AVX512]
|
||
|
|
|= bit_arch_Prefer_No_AVX512;
|
||
|
|
}
|
||
|
|
- /* This spells out "AuthenticAMD". */
|
||
|
|
- else if (ebx == 0x68747541 && ecx == 0x444d4163 && edx == 0x69746e65)
|
||
|
|
+ /* This spells out "AuthenticAMD" or "HygonGenuine". */
|
||
|
|
+ else if ((ebx == 0x68747541 && ecx == 0x444d4163 && edx == 0x69746e65)
|
||
|
|
+ || (ebx == 0x6f677948 && ecx == 0x656e6975 && edx == 0x6e65476e))
|
||
|
|
{
|
||
|
|
unsigned int extended_model, stepping;
|
||
|
|
|
||
|
|
--
|
||
|
|
2.27.0
|
||
|
|
|