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target/i386: Add Snowridge-v2 (no MPX) CPU model

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Add new version of Snowridge CPU model that removes MPX feature.

MPX support is being phased out by Intel. GCC has dropped it, Linux kernel
and KVM are also going to do that in the future.

Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
Message-Id: <20191012024748.127135-1-xiaoyao.li@intel.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
This commit is contained in:
Chen Qun 2019-10-12 10:47:48 +08:00
parent 3265d8ae1d
commit f8b061efaa
1 changed files with 43 additions and 0 deletions
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43
target-i386-Add-Snowridge-v2-no-MPX-CPU-model.patch Normal file
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@ -0,0 +1,43 @@
From ce4bb30a650773833cd1e86afcaa30e47259085c Mon Sep 17 00:00:00 2001
From: Xiaoyao Li <xiaoyao.li@intel.com>
Date: Sat, 12 Oct 2019 10:47:48 +0800
Subject: [PATCH] target/i386: Add Snowridge-v2 (no MPX) CPU model
Add new version of Snowridge CPU model that removes MPX feature.
MPX support is being phased out by Intel. GCC has dropped it, Linux kernel
and KVM are also going to do that in the future.
Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
Message-Id: <20191012024748.127135-1-xiaoyao.li@intel.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
---
target/i386/cpu.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index d3742ef4ac..f09612f9da 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -2668,6 +2668,18 @@ static X86CPUDefinition builtin_x86_defs[] = {
CPUID_6_EAX_ARAT,
.xlevel = 0x80000008,
.model_id = "Intel Atom Processor (SnowRidge)",
+ .versions = (X86CPUVersionDefinition[]) {
+ { .version = 1 },
+ {
+ .version = 2,
+ .props = (PropValue[]) {
+ { "mpx", "off" },
+ { "model-id", "Intel Atom Processor (Snowridge, no MPX)" },
+ { /* end of list */ },
+ },
+ },
+ { /* end of list */ },
+ },
},
{
.name = "KnightsMill",
--
2.27.0