Due to company changes, Zhaoxin is currently using the CPU ID
CentaurHauls. CPUs designed and developed by Zhaoxin start with
a family of 7, and the model may be less than 10.
Zhaoxin CPUs do not have cache coherence problems, add this patch
to avoid executing wbinvd on Zhaoxin CPUs.
Signed-off-by: Tony W Wang-oc <tonywwang...@zhaoxin.com>
---
grub-core/kern/i386/pc/init.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/grub-core/kern/i386/pc/init.c b/grub-core/kern/i386/pc/init.c
index 326d491c5..f42c1295e 100644
--- a/grub-core/kern/i386/pc/init.c
+++ b/grub-core/kern/i386/pc/init.c
@@ -204,6 +204,11 @@ grub_via_workaround_init (void)
{
grub_cpuid (1, proc_info, /* Don't care. */ manufacturer[0],
manufacturer[2], manufacturer[1]);
+
+ /* Check family, apply only to family 6 and lower. */
+ if (((proc_info & 0xf00) >> 8) > 6)
+ return;
+
/* Check model, apply only to VIA C3 and lower. */
if (((proc_info & 0xf0) >> 4 | (proc_info & 0xf0000) >> 12) > 10)
return;
--
2.25.1
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