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Commit d98403a5 authored by Deng-Cheng Zhu's avatar Deng-Cheng Zhu Committed by Paolo Bonzini
Browse files

MIPS: KVM: Simplify functions by removing redundancy 



No logic changes inside.

Reviewed-by: default avatarJames Hogan <james.hogan@imgtec.com>
Signed-off-by: default avatarDeng-Cheng Zhu <dengcheng.zhu@imgtec.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 6ad78a5c

arch/mips/include/asm/kvm_host.h

+1 −1
Original line number Diff line number Diff line
@@ -764,7 +764,7 @@ extern int kvm_mips_trans_mtc0(uint32_t inst, uint32_t *opc, 
			       struct kvm_vcpu *vcpu);



/* Misc */

extern int kvm_mips_dump_stats(struct kvm_vcpu *vcpu);

extern void kvm_mips_dump_stats(struct kvm_vcpu *vcpu);

extern unsigned long kvm_mips_get_ramsize(struct kvm *kvm);

arch/mips/kvm/kvm_mips.c

+4 −14
Original line number Diff line number Diff line
@@ -97,9 +97,7 @@ void kvm_arch_hardware_unsetup(void) 


void kvm_arch_check_processor_compat(void *rtn)

{

	int *r = (int *)rtn;

	*r = 0;

	return;

	*(int *)rtn = 0;

}



static void kvm_mips_init_tlbs(struct kvm *kvm)
@@ -225,7 +223,7 @@ void kvm_arch_commit_memory_region(struct kvm *kvm, 
				   enum kvm_mr_change change)

{

	unsigned long npages = 0;

	int i, err = 0;

	int i;



	kvm_debug("%s: kvm: %p slot: %d, GPA: %llx, size: %llx, QVA: %llx\n",

		  __func__, kvm, mem->slot, mem->guest_phys_addr,
@@ -243,8 +241,7 @@ void kvm_arch_commit_memory_region(struct kvm *kvm, 


			if (!kvm->arch.guest_pmap) {

				kvm_err("Failed to allocate guest PMAP");

				err = -ENOMEM;

				goto out;

				return;

			}



			kvm_debug("Allocated space for Guest PMAP Table (%ld pages) @ %p\n",
@@ -255,8 +252,6 @@ void kvm_arch_commit_memory_region(struct kvm *kvm, 
				kvm->arch.guest_pmap[i] = KVM_INVALID_PAGE;

		}

	}

out:

	return;

}



void kvm_arch_flush_shadow_all(struct kvm *kvm)
@@ -845,16 +840,12 @@ long kvm_arch_vm_ioctl(struct file *filp, unsigned int ioctl, unsigned long arg) 


int kvm_arch_init(void *opaque)

{

	int ret;



	if (kvm_mips_callbacks) {

		kvm_err("kvm: module already exists\n");

		return -EEXIST;

	}



	ret = kvm_mips_emulation_init(&kvm_mips_callbacks);



	return ret;

	return kvm_mips_emulation_init(&kvm_mips_callbacks);

}



void kvm_arch_exit(void)
@@ -1008,7 +999,6 @@ int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu) 


void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu)

{

	return;

}



int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,

arch/mips/kvm/kvm_mips_commpage.c

+0 −2
Original line number Diff line number Diff line
@@ -33,6 +33,4 @@ void kvm_mips_commpage_init(struct kvm_vcpu *vcpu) 
	/* Specific init values for fields */

	vcpu->arch.cop0 = &page->cop0;

	memset(vcpu->arch.cop0, 0, sizeof(struct mips_coproc));



	return;

}

arch/mips/kvm/kvm_mips_emul.c

+11 −23
Original line number Diff line number Diff line
@@ -761,8 +761,6 @@ enum emulation_result kvm_mips_emul_eret(struct kvm_vcpu *vcpu) 


enum emulation_result kvm_mips_emul_wait(struct kvm_vcpu *vcpu)

{

	enum emulation_result er = EMULATE_DONE;



	kvm_debug("[%#lx] !!!WAIT!!! (%#lx)\n", vcpu->arch.pc,

		  vcpu->arch.pending_exceptions);
@@ -782,7 +780,7 @@ enum emulation_result kvm_mips_emul_wait(struct kvm_vcpu *vcpu) 
		}

	}



	return er;

	return EMULATE_DONE;

}



/*
@@ -792,11 +790,10 @@ enum emulation_result kvm_mips_emul_wait(struct kvm_vcpu *vcpu) 
enum emulation_result kvm_mips_emul_tlbr(struct kvm_vcpu *vcpu)

{

	struct mips_coproc *cop0 = vcpu->arch.cop0;

	enum emulation_result er = EMULATE_FAIL;

	uint32_t pc = vcpu->arch.pc;



	kvm_err("[%#x] COP0_TLBR [%ld]\n", pc, kvm_read_c0_guest_index(cop0));

	return er;

	return EMULATE_FAIL;

}



/* Write Guest TLB Entry @ Index */
@@ -804,7 +801,6 @@ enum emulation_result kvm_mips_emul_tlbwi(struct kvm_vcpu *vcpu) 
{

	struct mips_coproc *cop0 = vcpu->arch.cop0;

	int index = kvm_read_c0_guest_index(cop0);

	enum emulation_result er = EMULATE_DONE;

	struct kvm_mips_tlb *tlb = NULL;

	uint32_t pc = vcpu->arch.pc;
@@ -836,14 +832,13 @@ enum emulation_result kvm_mips_emul_tlbwi(struct kvm_vcpu *vcpu) 
		  kvm_read_c0_guest_entrylo1(cop0),

		  kvm_read_c0_guest_pagemask(cop0));



	return er;

	return EMULATE_DONE;

}



/* Write Guest TLB Entry @ Random Index */

enum emulation_result kvm_mips_emul_tlbwr(struct kvm_vcpu *vcpu)

{

	struct mips_coproc *cop0 = vcpu->arch.cop0;

	enum emulation_result er = EMULATE_DONE;

	struct kvm_mips_tlb *tlb = NULL;

	uint32_t pc = vcpu->arch.pc;

	int index;
@@ -874,14 +869,13 @@ enum emulation_result kvm_mips_emul_tlbwr(struct kvm_vcpu *vcpu) 
		  kvm_read_c0_guest_entrylo0(cop0),

		  kvm_read_c0_guest_entrylo1(cop0));



	return er;

	return EMULATE_DONE;

}



enum emulation_result kvm_mips_emul_tlbp(struct kvm_vcpu *vcpu)

{

	struct mips_coproc *cop0 = vcpu->arch.cop0;

	long entryhi = kvm_read_c0_guest_entryhi(cop0);

	enum emulation_result er = EMULATE_DONE;

	uint32_t pc = vcpu->arch.pc;

	int index = -1;
@@ -892,7 +886,7 @@ enum emulation_result kvm_mips_emul_tlbp(struct kvm_vcpu *vcpu) 
	kvm_debug("[%#x] COP0_TLBP (entryhi: %#lx), index: %d\n", pc, entryhi,

		  index);



	return er;

	return EMULATE_DONE;

}



enum emulation_result kvm_mips_emulate_CP0(uint32_t inst, uint32_t *opc,
@@ -1638,7 +1632,6 @@ enum emulation_result kvm_mips_emulate_tlbmiss_ld(unsigned long cause, 
{

	struct mips_coproc *cop0 = vcpu->arch.cop0;

	struct kvm_vcpu_arch *arch = &vcpu->arch;

	enum emulation_result er = EMULATE_DONE;

	unsigned long entryhi = (vcpu->arch.  host_cp0_badvaddr & VPN2_MASK) |

				(kvm_read_c0_guest_entryhi(cop0) & ASID_MASK);
@@ -1675,7 +1668,7 @@ enum emulation_result kvm_mips_emulate_tlbmiss_ld(unsigned long cause, 
	/* Blow away the shadow host TLBs */

	kvm_mips_flush_host_tlb(1);



	return er;

	return EMULATE_DONE;

}



enum emulation_result kvm_mips_emulate_tlbinv_ld(unsigned long cause,
@@ -1685,7 +1678,6 @@ enum emulation_result kvm_mips_emulate_tlbinv_ld(unsigned long cause, 
{

	struct mips_coproc *cop0 = vcpu->arch.cop0;

	struct kvm_vcpu_arch *arch = &vcpu->arch;

	enum emulation_result er = EMULATE_DONE;

	unsigned long entryhi =

		(vcpu->arch.host_cp0_badvaddr & VPN2_MASK) |

		(kvm_read_c0_guest_entryhi(cop0) & ASID_MASK);
@@ -1722,7 +1714,7 @@ enum emulation_result kvm_mips_emulate_tlbinv_ld(unsigned long cause, 
	/* Blow away the shadow host TLBs */

	kvm_mips_flush_host_tlb(1);



	return er;

	return EMULATE_DONE;

}



enum emulation_result kvm_mips_emulate_tlbmiss_st(unsigned long cause,
@@ -1732,7 +1724,6 @@ enum emulation_result kvm_mips_emulate_tlbmiss_st(unsigned long cause, 
{

	struct mips_coproc *cop0 = vcpu->arch.cop0;

	struct kvm_vcpu_arch *arch = &vcpu->arch;

	enum emulation_result er = EMULATE_DONE;

	unsigned long entryhi = (vcpu->arch.host_cp0_badvaddr & VPN2_MASK) |

				(kvm_read_c0_guest_entryhi(cop0) & ASID_MASK);
@@ -1767,7 +1758,7 @@ enum emulation_result kvm_mips_emulate_tlbmiss_st(unsigned long cause, 
	/* Blow away the shadow host TLBs */

	kvm_mips_flush_host_tlb(1);



	return er;

	return EMULATE_DONE;

}



enum emulation_result kvm_mips_emulate_tlbinv_st(unsigned long cause,
@@ -1777,7 +1768,6 @@ enum emulation_result kvm_mips_emulate_tlbinv_st(unsigned long cause, 
{

	struct mips_coproc *cop0 = vcpu->arch.cop0;

	struct kvm_vcpu_arch *arch = &vcpu->arch;

	enum emulation_result er = EMULATE_DONE;

	unsigned long entryhi = (vcpu->arch.host_cp0_badvaddr & VPN2_MASK) |

		(kvm_read_c0_guest_entryhi(cop0) & ASID_MASK);
@@ -1812,7 +1802,7 @@ enum emulation_result kvm_mips_emulate_tlbinv_st(unsigned long cause, 
	/* Blow away the shadow host TLBs */

	kvm_mips_flush_host_tlb(1);



	return er;

	return EMULATE_DONE;

}



/* TLBMOD: store into address matching TLB with Dirty bit off */
@@ -1853,7 +1843,6 @@ enum emulation_result kvm_mips_emulate_tlbmod(unsigned long cause, 
	unsigned long entryhi = (vcpu->arch.host_cp0_badvaddr & VPN2_MASK) |

				(kvm_read_c0_guest_entryhi(cop0) & ASID_MASK);

	struct kvm_vcpu_arch *arch = &vcpu->arch;

	enum emulation_result er = EMULATE_DONE;



	if ((kvm_read_c0_guest_status(cop0) & ST0_EXL) == 0) {

		/* save old pc */
@@ -1884,7 +1873,7 @@ enum emulation_result kvm_mips_emulate_tlbmod(unsigned long cause, 
	/* Blow away the shadow host TLBs */

	kvm_mips_flush_host_tlb(1);



	return er;

	return EMULATE_DONE;

}



enum emulation_result kvm_mips_emulate_fpu_exc(unsigned long cause,
@@ -1894,7 +1883,6 @@ enum emulation_result kvm_mips_emulate_fpu_exc(unsigned long cause, 
{

	struct mips_coproc *cop0 = vcpu->arch.cop0;

	struct kvm_vcpu_arch *arch = &vcpu->arch;

	enum emulation_result er = EMULATE_DONE;



	if ((kvm_read_c0_guest_status(cop0) & ST0_EXL) == 0) {

		/* save old pc */
@@ -1914,7 +1902,7 @@ enum emulation_result kvm_mips_emulate_fpu_exc(unsigned long cause, 
				  (T_COP_UNUSABLE << CAUSEB_EXCCODE));

	kvm_change_c0_guest_cause(cop0, (CAUSEF_CE), (0x1 << CAUSEB_CE));



	return er;

	return EMULATE_DONE;

}



enum emulation_result kvm_mips_emulate_ri_exc(unsigned long cause,

arch/mips/kvm/kvm_mips_stats.c

+1 −3
Original line number Diff line number Diff line
@@ -63,7 +63,7 @@ char *kvm_cop0_str[N_MIPS_COPROC_REGS] = { 
	"DESAVE"

};



int kvm_mips_dump_stats(struct kvm_vcpu *vcpu)

void kvm_mips_dump_stats(struct kvm_vcpu *vcpu)

{

#ifdef CONFIG_KVM_MIPS_DEBUG_COP0_COUNTERS

	int i, j;
@@ -77,6 +77,4 @@ int kvm_mips_dump_stats(struct kvm_vcpu *vcpu) 
		}

	}

#endif



	return 0;

}