diff options
| author | Eduardo Habkost <ehabkost@redhat.com> | 2016-09-21 13:30:12 -0300 |
|---|---|---|
| committer | Eduardo Habkost <ehabkost@redhat.com> | 2016-09-27 16:17:17 -0300 |
| commit | c39c0edf9bb3b968ba95484465a50c7b19f4aa3a (patch) | |
| tree | a13088f4ca783ac84c9d3e40d87a6cf2e4caa6e8 /tests | |
| parent | df3e9af8fd02f22d03871975daa23ecbfcd48490 (diff) | |
target-i386: Automatically set level/xlevel/xlevel2 when needed
Instead of requiring users and management software to be aware of
required CPUID level/xlevel/xlevel2 values for each feature,
automatically increase those values when features need them.
This was already done for CPUID[7].EBX, and is now made generic
for all CPUID feature flags. Unit test included, to make sure we
don't break ABI on older machine-types and don't mess with the
CPUID level values if they are explicitly set by the user.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Diffstat (limited to 'tests')
| -rw-r--r-- | tests/test-x86-cpuid-compat.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/tests/test-x86-cpuid-compat.c b/tests/test-x86-cpuid-compat.c index f7003ee39d..83f1c80868 100644 --- a/tests/test-x86-cpuid-compat.c +++ b/tests/test-x86-cpuid-compat.c @@ -85,19 +85,64 @@ int main(int argc, char **argv) "-cpu phenom", "xlevel", 0x8000001A); /* If level is not large enough, it should increase automatically: */ + /* CPUID[6].EAX: */ + add_cpuid_test("x86/cpuid/auto-level/phenom/arat", + "-cpu 486,+arat", "level", 6); /* CPUID[EAX=7,ECX=0].EBX: */ add_cpuid_test("x86/cpuid/auto-level/phenom/fsgsbase", "-cpu phenom,+fsgsbase", "level", 7); + /* CPUID[EAX=7,ECX=0].ECX: */ + add_cpuid_test("x86/cpuid/auto-level/phenom/avx512vbmi", + "-cpu phenom,+avx512vbmi", "level", 7); + /* CPUID[EAX=0xd,ECX=1].EAX: */ + add_cpuid_test("x86/cpuid/auto-level/phenom/xsaveopt", + "-cpu phenom,+xsaveopt", "level", 0xd); + /* CPUID[8000_0001].EDX: */ + add_cpuid_test("x86/cpuid/auto-xlevel/486/3dnow", + "-cpu 486,+3dnow", "xlevel", 0x80000001); + /* CPUID[8000_0001].ECX: */ + add_cpuid_test("x86/cpuid/auto-xlevel/486/sse4a", + "-cpu 486,+sse4a", "xlevel", 0x80000001); + /* CPUID[8000_0007].EDX: */ + add_cpuid_test("x86/cpuid/auto-xlevel/486/invtsc", + "-cpu 486,+invtsc", "xlevel", 0x80000007); + /* CPUID[8000_000A].EDX: */ + add_cpuid_test("x86/cpuid/auto-xlevel/486/npt", + "-cpu 486,+npt", "xlevel", 0x8000000A); + /* CPUID[C000_0001].EDX: */ + add_cpuid_test("x86/cpuid/auto-xlevel2/phenom/xstore", + "-cpu phenom,+xstore", "xlevel2", 0xC0000001); + /* If level is already large enough, it shouldn't change: */ add_cpuid_test("x86/cpuid/auto-level/SandyBridge/multiple", "-cpu SandyBridge,+arat,+fsgsbase,+avx512vbmi", "level", 0xd); + /* If level is explicitly set, it shouldn't change: */ + add_cpuid_test("x86/cpuid/auto-level/486/fixed/0xF", + "-cpu 486,level=0xF,+arat,+fsgsbase,+avx512vbmi,+xsaveopt", + "level", 0xF); + add_cpuid_test("x86/cpuid/auto-level/486/fixed/2", + "-cpu 486,level=2,+arat,+fsgsbase,+avx512vbmi,+xsaveopt", + "level", 2); + add_cpuid_test("x86/cpuid/auto-level/486/fixed/0", + "-cpu 486,level=0,+arat,+fsgsbase,+avx512vbmi,+xsaveopt", + "level", 0); /* if xlevel is already large enough, it shouldn't change: */ add_cpuid_test("x86/cpuid/auto-xlevel/phenom/3dnow", "-cpu phenom,+3dnow,+sse4a,+invtsc,+npt", "xlevel", 0x8000001A); + /* If xlevel is explicitly set, it shouldn't change: */ + add_cpuid_test("x86/cpuid/auto-xlevel/486/fixed/80000002", + "-cpu 486,xlevel=0x80000002,+3dnow,+sse4a,+invtsc,+npt", + "xlevel", 0x80000002); + add_cpuid_test("x86/cpuid/auto-xlevel/486/fixed/8000001A", + "-cpu 486,xlevel=0x8000001A,+3dnow,+sse4a,+invtsc,+npt", + "xlevel", 0x8000001A); + add_cpuid_test("x86/cpuid/auto-xlevel/phenom/fixed/0", + "-cpu 486,xlevel=0,+3dnow,+sse4a,+invtsc,+npt", + "xlevel", 0); /* if xlevel2 is already large enough, it shouldn't change: */ add_cpuid_test("x86/cpuid/auto-xlevel2/486/fixed", |