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hv:fixed compilation error in Ubuntu 

it uses builtin function(__builtin_popcountl)in bitmap_weight(),
it will use the 'popcnt' instruction,
this patch enable 'popcnt' instruction support in Makefile

Tracked-On: #3663
Signed-off-by: Mingqiang Chi <mingqiang.chi@intel.com>
This commit is contained in:
Mingqiang Chi 2019-09-25 13:53:06 +08:00 committed by ACRN System Integration
parent c9c02785cb
commit 187fa97e52
2 changed files with 4 additions and 1 deletions
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2
hypervisor/Makefile
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@ -78,7 +78,7 @@ CFLAGS += -ffunction-sections -fdata-sections
CFLAGS += -fshort-wchar -ffreestanding
CFLAGS += -fsigned-char
CFLAGS += -m64 -mno-mmx -mno-sse -mno-sse2 -mno-80387 -mno-fp-ret-in-387
CFLAGS += -mno-red-zone
CFLAGS += -mno-red-zone -mpopcnt
CFLAGS += -nostdinc -nostdlib -fno-common
CFLAGS += -Werror
CFLAGS += -O2

3
hypervisor/arch/x86/cpu_caps.c
View File

@ -423,6 +423,9 @@ int32_t detect_hardware_support(void)
} else if (!pcpu_has_cap(X86_FEATURE_X2APIC)) {
printf("%s, x2APIC not supported\n", __func__);
ret = -ENODEV;
} else if (!pcpu_has_cap(X86_FEATURE_POPCNT)) {
printf("%s, popcnt instruction not supported\n", __func__);
ret = -ENODEV;
} else {
ret = check_vmx_mmu_cap();
}