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| author | Paolo Bonzini <pbonzini@redhat.com> | 2020-06-16 10:02:17 -0400 |
|---|---|---|
| committer | Thomas Huth <thuth@redhat.com> | 2020-06-16 20:15:15 +0200 |
| commit | f86fb6cbf292d48ab78205dc7acab1a380561639 (patch) | |
| tree | 5b1be93613e7b907f840bdcd6d2f1927cb8f0d4c | |
| parent | 417ecf40bad5b6e753bb9f5cd4dff45cd90c2f28 (diff) | |
| download | kvm-unit-tests-f86fb6cbf292d48ab78205dc7acab1a380561639.tar.gz | |
x86: disable SSE on 32-bit hosts
On 64-bit hosts we are disabling SSE and SSE2. Depending on the
compiler however it may use movq instructions for 64-bit transfers
even when targeting 32-bit processors; when CR4.OSFXSR is not set,
this results in an undefined opcode exception, so tell the compiler
to avoid those instructions on 32-bit hosts as well.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20200616140217.104362-1-pbonzini@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
| -rw-r--r-- | x86/Makefile.i386 | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/x86/Makefile.i386 b/x86/Makefile.i386 index d801b80..be9d6bc 100644 --- a/x86/Makefile.i386 +++ b/x86/Makefile.i386 @@ -1,6 +1,7 @@ cstart.o = $(TEST_DIR)/cstart.o bits = 32 ldarch = elf32-i386 +COMMON_CFLAGS += -mno-sse -mno-sse2 cflatobjs += lib/x86/setjmp32.o |