From f8b061efaa85eb86d82dcced72473468d2b8dd59 Mon Sep 17 00:00:00 2001 From: Chen Qun 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 Message-Id: <20191012024748.127135-1-xiaoyao.li@intel.com> Signed-off-by: Eduardo Habkost --- ...86-Add-Snowridge-v2-no-MPX-CPU-model.patch | 43 +++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 target-i386-Add-Snowridge-v2-no-MPX-CPU-model.patch diff --git a/target-i386-Add-Snowridge-v2-no-MPX-CPU-model.patch b/target-i386-Add-Snowridge-v2-no-MPX-CPU-model.patch new file mode 100644 index 0000000..eedd335 --- /dev/null +++ b/target-i386-Add-Snowridge-v2-no-MPX-CPU-model.patch @@ -0,0 +1,43 @@ +From ce4bb30a650773833cd1e86afcaa30e47259085c Mon Sep 17 00:00:00 2001 +From: Xiaoyao Li +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 +Message-Id: <20191012024748.127135-1-xiaoyao.li@intel.com> +Signed-off-by: Eduardo Habkost +--- + 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 +