Pull x86 fpu changes from Ingo Molnar:
"There are two main areas of changes:
- Rework of the extended FPU state code to robustify the kernel's
usage of cpuid provided xstate sizes - and related changes (Dave
Hansen)"
- math emulation enhancements: new modern FPU instructions support,
with testcases, plus cleanups (Denys Vlasnko)"
* 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (23 commits)
x86/fpu: Fixup uninitialized feature_name warning
x86/fpu/math-emu: Add support for FISTTP instructions
x86/fpu/math-emu, selftests: Add test for FISTTP instructions
x86/fpu/math-emu: Add support for FCMOVcc insns
x86/fpu/math-emu: Add support for F[U]COMI[P] insns
x86/fpu/math-emu: Remove define layer for undocumented opcodes
x86/fpu/math-emu, selftests: Add tests for FCMOV and FCOMI insns
x86/fpu/math-emu: Remove !NO_UNDOC_CODE
x86/fpu: Check CPU-provided sizes against struct declarations
x86/fpu: Check to ensure increasing-offset xstate offsets
x86/fpu: Correct and check XSAVE xstate size calculations
x86/fpu: Add C structures for AVX-512 state components
x86/fpu: Rework YMM definition
x86/fpu/mpx: Rework MPX 'xstate' types
x86/fpu: Add xfeature_enabled() helper instead of test_bit()
x86/fpu: Remove 'xfeature_nr'
x86/fpu: Rework XSTATE_* macros to remove magic '2'
x86/fpu: Rename XFEATURES_NR_MAX
x86/fpu: Rename XSAVE macros
x86/fpu: Remove partial LWP support definitions
...
{
const char *feature_name;
- if (!cpu_has_xfeatures(XSTATE_SSE | XSTATE_YMM, &feature_name)) {
+ if (!cpu_has_avx || !cpu_has_aes || !cpu_has_osxsave) {
+ pr_info("AVX or AES-NI instructions are not detected.\n");
+ return -ENODEV;
+ }
+
+ if (!cpu_has_xfeatures(XFEATURE_MASK_SSE | XFEATURE_MASK_YMM,
+ &feature_name)) {
pr_info("CPU feature '%s' is not supported.\n", feature_name);
return -ENODEV;
}
.PHONY: all all_32 all_64 warn_32bit_failure clean
-TARGETS_C_BOTHBITS := single_step_syscall sysret_ss_attrs ldt_gdt syscall_nt
-TARGETS_C_32BIT_ONLY := entry_from_vm86 syscall_arg_fault sigreturn \
+TARGETS_C_BOTHBITS := single_step_syscall sysret_ss_attrs ldt_gdt syscall_nt ptrace_syscall
- TARGETS_C_32BIT_ONLY := entry_from_vm86 syscall_arg_fault sigreturn test_syscall_vdso unwind_vdso
++TARGETS_C_32BIT_ONLY := entry_from_vm86 syscall_arg_fault sigreturn test_syscall_vdso unwind_vdso \
+ test_FCMOV test_FCOMI test_FISTTP
TARGETS_C_32BIT_ALL := $(TARGETS_C_BOTHBITS) $(TARGETS_C_32BIT_ONLY)
BINARIES_32 := $(TARGETS_C_32BIT_ALL:%=%_32)