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x86/fpu, kvm: Simplify fx_init() 

Now that fpstate_init() cannot fail the error return of fx_init()
has lost its purpose. Eliminate the error return and propagate this
change to all callers.

Reviewed-by: Borislav Petkov <bp@alien8.de>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
hifive-unleashed-5.1
Ingo Molnar 2015-04-27 06:58:22 +02:00
parent 2fb29fc7c6
commit 0ee6a51725
2 changed files with 3 additions and 13 deletions
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2
arch/x86/include/asm/kvm_host.h
View File

@ -999,8 +999,6 @@ void kvm_pic_clear_all(struct kvm_pic *pic, int irq_source_id);
void kvm_inject_nmi(struct kvm_vcpu *vcpu);
int fx_init(struct kvm_vcpu *vcpu);
void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
const u8 *new, int bytes);
int kvm_mmu_unprotect_page(struct kvm *kvm, gfn_t gfn);

14
arch/x86/kvm/x86.c
View File

@ -7004,10 +7004,8 @@ int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
return 0;
}
int fx_init(struct kvm_vcpu *vcpu)
static void fx_init(struct kvm_vcpu *vcpu)
{
int err;
fpstate_init(&vcpu->arch.guest_fpu);
if (cpu_has_xsaves)
vcpu->arch.guest_fpu.state.xsave.header.xcomp_bv =
@ -7019,10 +7017,7 @@ int fx_init(struct kvm_vcpu *vcpu)
vcpu->arch.xcr0 = XSTATE_FP;
vcpu->arch.cr0 |= X86_CR0_ET;
return 0;
}
EXPORT_SYMBOL_GPL(fx_init);
void kvm_load_guest_fpu(struct kvm_vcpu *vcpu)
{
@ -7341,9 +7336,7 @@ int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
goto fail_free_mce_banks;
}
r = fx_init(vcpu);
if (r)
goto fail_free_wbinvd_dirty_mask;
fx_init(vcpu);
vcpu->arch.ia32_tsc_adjust_msr = 0x0;
vcpu->arch.pv_time_enabled = false;
@ -7357,8 +7350,7 @@ int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
kvm_pmu_init(vcpu);
return 0;
fail_free_wbinvd_dirty_mask:
free_cpumask_var(vcpu->arch.wbinvd_dirty_mask);
fail_free_mce_banks:
kfree(vcpu->arch.mce_banks);
fail_free_lapic: