Merge branch 'topic/ppc-kvm' into next (ba6d8efb) · Commits · git / linux-net

arch/powerpc/include/asm/cputable.h

+6 −5

Original line number	Diff line number	Diff line
		@@ -193,6 +193,7 @@ static inline void cpu_feature_keys_init(void) { }
		#define CPU_FTR_ARCH_31 LONG_ASM_CONST(0x0004000000000000)
		#define CPU_FTR_DAWR1 LONG_ASM_CONST(0x0008000000000000)
		#define CPU_FTR_DEXCR_NPHIE LONG_ASM_CONST(0x0010000000000000)
		#define CPU_FTR_P11_PVR LONG_ASM_CONST(0x0020000000000000)

		#ifndef __ASSEMBLY__

		@@ -454,7 +455,7 @@ static inline void cpu_feature_keys_init(void) { }
		CPU_FTR_DAWR \| CPU_FTR_DAWR1 \| \
		CPU_FTR_DEXCR_NPHIE)

		#define CPU_FTRS_POWER11 CPU_FTRS_POWER10
		#define CPU_FTRS_POWER11 (CPU_FTRS_POWER10 \| CPU_FTR_P11_PVR)

		#define CPU_FTRS_CELL (CPU_FTR_LWSYNC \| \
		CPU_FTR_PPCAS_ARCH_V2 \| CPU_FTR_CTRL \| \
		@@ -475,7 +476,7 @@ static inline void cpu_feature_keys_init(void) { }
		(CPU_FTRS_POWER7 \| CPU_FTRS_POWER8E \| CPU_FTRS_POWER8 \| \
		CPU_FTR_ALTIVEC_COMP \| CPU_FTR_VSX_COMP \| CPU_FTRS_POWER9 \| \
		CPU_FTRS_POWER9_DD2_1 \| CPU_FTRS_POWER9_DD2_2 \| \
		CPU_FTRS_POWER9_DD2_3 \| CPU_FTRS_POWER10)
		CPU_FTRS_POWER9_DD2_3 \| CPU_FTRS_POWER10 \| CPU_FTRS_POWER11)
		#else
		#define CPU_FTRS_POSSIBLE \
		(CPU_FTRS_PPC970 \| CPU_FTRS_POWER5 \| \
		@@ -483,7 +484,7 @@ static inline void cpu_feature_keys_init(void) { }
		CPU_FTRS_POWER8 \| CPU_FTRS_CELL \| CPU_FTRS_PA6T \| \
		CPU_FTR_VSX_COMP \| CPU_FTR_ALTIVEC_COMP \| CPU_FTRS_POWER9 \| \
		CPU_FTRS_POWER9_DD2_1 \| CPU_FTRS_POWER9_DD2_2 \| \
		CPU_FTRS_POWER9_DD2_3 \| CPU_FTRS_POWER10)
		CPU_FTRS_POWER9_DD2_3 \| CPU_FTRS_POWER10 \| CPU_FTRS_POWER11)
		#endif /* CONFIG_CPU_LITTLE_ENDIAN */
		#endif
		#else
		@@ -547,7 +548,7 @@ enum {
		(CPU_FTRS_POSSIBLE & ~CPU_FTR_HVMODE & ~CPU_FTR_DBELL & \
		CPU_FTRS_POWER7 & CPU_FTRS_POWER8E & CPU_FTRS_POWER8 & \
		CPU_FTRS_POWER9 & CPU_FTRS_POWER9_DD2_1 & CPU_FTRS_POWER9_DD2_2 & \
		CPU_FTRS_POWER10 & CPU_FTRS_DT_CPU_BASE)
		CPU_FTRS_POWER10 & CPU_FTRS_POWER11 & CPU_FTRS_DT_CPU_BASE)
		#else
		#define CPU_FTRS_ALWAYS \
		(CPU_FTRS_PPC970 & CPU_FTRS_POWER5 & \
		@@ -555,7 +556,7 @@ enum {
		CPU_FTRS_PA6T & CPU_FTRS_POWER8 & CPU_FTRS_POWER8E & \
		~CPU_FTR_HVMODE & ~CPU_FTR_DBELL & CPU_FTRS_POSSIBLE & \
		CPU_FTRS_POWER9 & CPU_FTRS_POWER9_DD2_1 & CPU_FTRS_POWER9_DD2_2 & \
		CPU_FTRS_POWER10 & CPU_FTRS_DT_CPU_BASE)
		CPU_FTRS_POWER10 & CPU_FTRS_POWER11 & CPU_FTRS_DT_CPU_BASE)
		#endif /* CONFIG_CPU_LITTLE_ENDIAN */
		#endif
		#else

arch/powerpc/include/asm/hvcall.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -495,6 +495,7 @@
		#define H_GUEST_CAP_COPY_MEM (1UL<<(63-0))
		#define H_GUEST_CAP_POWER9 (1UL<<(63-1))
		#define H_GUEST_CAP_POWER10 (1UL<<(63-2))
		#define H_GUEST_CAP_POWER11 (1UL<<(63-3))
		#define H_GUEST_CAP_BITMAP2 (1UL<<(63-63))

		#ifndef __ASSEMBLY__

arch/powerpc/include/asm/kvm_book3s_64.h

+2 −2

Original line number	Diff line number	Diff line
		@@ -684,8 +684,8 @@ int kvmhv_nestedv2_set_ptbl_entry(unsigned long lpid, u64 dw0, u64 dw1);
		int kvmhv_nestedv2_parse_output(struct kvm_vcpu *vcpu);
		int kvmhv_nestedv2_set_vpa(struct kvm_vcpu *vcpu, unsigned long vpa);

		int kmvhv_counters_tracepoint_regfunc(void);
		void kmvhv_counters_tracepoint_unregfunc(void);
		int kvmhv_counters_tracepoint_regfunc(void);
		void kvmhv_counters_tracepoint_unregfunc(void);
		int kvmhv_get_l2_counters_status(void);
		void kvmhv_set_l2_counters_status(int cpu, bool status);

arch/powerpc/kvm/book3s_hv.c

+18 −34

Original line number	Diff line number	Diff line
		@@ -400,6 +400,9 @@ static inline unsigned long map_pcr_to_cap(unsigned long pcr)
		cap = H_GUEST_CAP_POWER9;
		break;
		case PCR_ARCH_31:
		if (cpu_has_feature(CPU_FTR_P11_PVR))
		cap = H_GUEST_CAP_POWER11;
		else
		cap = H_GUEST_CAP_POWER10;
		break;
		default:
		@@ -415,7 +418,7 @@ static int kvmppc_set_arch_compat(struct kvm_vcpu *vcpu, u32 arch_compat)
		struct kvmppc_vcore *vc = vcpu->arch.vcore;

		/* We can (emulate) our own architecture version and anything older */
		if (cpu_has_feature(CPU_FTR_ARCH_31))
		if (cpu_has_feature(CPU_FTR_P11_PVR) \|\| cpu_has_feature(CPU_FTR_ARCH_31))
		host_pcr_bit = PCR_ARCH_31;
		else if (cpu_has_feature(CPU_FTR_ARCH_300))
		host_pcr_bit = PCR_ARCH_300;
		@@ -2060,36 +2063,9 @@ static int kvmppc_handle_nested_exit(struct kvm_vcpu *vcpu)
		fallthrough; /* go to facility unavailable handler */
		#endif

		case BOOK3S_INTERRUPT_H_FAC_UNAVAIL: {
		u64 cause = vcpu->arch.hfscr >> 56;

		/*
		* Only pass HFU interrupts to the L1 if the facility is
		* permitted but disabled by the L1's HFSCR, otherwise
		* the interrupt does not make sense to the L1 so turn
		* it into a HEAI.
		*/
		if (!(vcpu->arch.hfscr_permitted & (1UL << cause)) \|\|
		(vcpu->arch.nested_hfscr & (1UL << cause))) {
		ppc_inst_t pinst;
		vcpu->arch.trap = BOOK3S_INTERRUPT_H_EMUL_ASSIST;

		/*
		* If the fetch failed, return to guest and
		* try executing it again.
		*/
		r = kvmppc_get_last_inst(vcpu, INST_GENERIC, &pinst);
		vcpu->arch.emul_inst = ppc_inst_val(pinst);
		if (r != EMULATE_DONE)
		r = RESUME_GUEST;
		else
		r = RESUME_HOST;
		} else {
		case BOOK3S_INTERRUPT_H_FAC_UNAVAIL:
		r = RESUME_HOST;
		}

		break;
		}

		case BOOK3S_INTERRUPT_HV_RM_HARD:
		vcpu->arch.trap = 0;
		@@ -4154,7 +4130,7 @@ void kvmhv_set_l2_counters_status(int cpu, bool status)
		lppaca_of(cpu).l2_counters_enable = 0;
		}

		int kmvhv_counters_tracepoint_regfunc(void)
		int kvmhv_counters_tracepoint_regfunc(void)
		{
		int cpu;

		@@ -4164,7 +4140,7 @@ int kmvhv_counters_tracepoint_regfunc(void)
		return 0;
		}

		void kmvhv_counters_tracepoint_unregfunc(void)
		void kvmhv_counters_tracepoint_unregfunc(void)
		{
		int cpu;

		@@ -4309,6 +4285,15 @@ static int kvmhv_vcpu_entry_p9_nested(struct kvm_vcpu *vcpu, u64 time_limit, uns
		}
		hvregs.hdec_expiry = time_limit;

		/*
		* hvregs has the doorbell status, so zero it here which
		* enables us to receive doorbells when H_ENTER_NESTED is
		* in progress for this vCPU
		*/

		if (vcpu->arch.doorbell_request)
		vcpu->arch.doorbell_request = 0;

		/*
		* When setting DEC, we must always deal with irq_work_raise
		* via NMI vs setting DEC. The problem occurs right as we
		@@ -4900,7 +4885,6 @@ int kvmhv_run_single_vcpu(struct kvm_vcpu *vcpu, u64 time_limit,
		lpcr \|= LPCR_MER;
		}
		} else if (vcpu->arch.pending_exceptions \|\|
		vcpu->arch.doorbell_request \|\|
		xive_interrupt_pending(vcpu)) {
		vcpu->arch.ret = RESUME_HOST;
		goto out;

arch/powerpc/kvm/book3s_hv_nested.c

+12 −4

Original line number	Diff line number	Diff line
		@@ -32,7 +32,7 @@ void kvmhv_save_hv_regs(struct kvm_vcpu vcpu, struct hv_guest_state hr)
		struct kvmppc_vcore *vc = vcpu->arch.vcore;

		hr->pcr = vc->pcr \| PCR_MASK;
		hr->dpdes = vc->dpdes;
		hr->dpdes = vcpu->arch.doorbell_request;
		hr->hfscr = vcpu->arch.hfscr;
		hr->tb_offset = vc->tb_offset;
		hr->dawr0 = vcpu->arch.dawr0;
		@@ -105,7 +105,7 @@ static void save_hv_return_state(struct kvm_vcpu *vcpu,
		{
		struct kvmppc_vcore *vc = vcpu->arch.vcore;

		hr->dpdes = vc->dpdes;
		hr->dpdes = vcpu->arch.doorbell_request;
		hr->purr = vcpu->arch.purr;
		hr->spurr = vcpu->arch.spurr;
		hr->ic = vcpu->arch.ic;
		@@ -143,7 +143,7 @@ static void restore_hv_regs(struct kvm_vcpu vcpu, const struct hv_guest_state
		struct kvmppc_vcore *vc = vcpu->arch.vcore;

		vc->pcr = hr->pcr \| PCR_MASK;
		vc->dpdes = hr->dpdes;
		vcpu->arch.doorbell_request = hr->dpdes;
		vcpu->arch.hfscr = hr->hfscr;
		vcpu->arch.dawr0 = hr->dawr0;
		vcpu->arch.dawrx0 = hr->dawrx0;
		@@ -170,7 +170,13 @@ void kvmhv_restore_hv_return_state(struct kvm_vcpu *vcpu,
		{
		struct kvmppc_vcore *vc = vcpu->arch.vcore;

		vc->dpdes = hr->dpdes;
		/*
		* This L2 vCPU might have received a doorbell while H_ENTER_NESTED was being handled.
		* Make sure we preserve the doorbell if it was either:
		* a) Sent after H_ENTER_NESTED was called on this vCPU (arch.doorbell_request would be 1)
		* b) Doorbell was not handled and L2 exited for some other reason (hr->dpdes would be 1)
		*/
		vcpu->arch.doorbell_request = vcpu->arch.doorbell_request \| hr->dpdes;
		vcpu->arch.hfscr = hr->hfscr;
		vcpu->arch.purr = hr->purr;
		vcpu->arch.spurr = hr->spurr;
		@@ -445,6 +451,8 @@ long kvmhv_nested_init(void)
		if (rc == H_SUCCESS) {
		unsigned long capabilities = 0;

		if (cpu_has_feature(CPU_FTR_P11_PVR))
		capabilities \|= H_GUEST_CAP_POWER11;
		if (cpu_has_feature(CPU_FTR_ARCH_31))
		capabilities \|= H_GUEST_CAP_POWER10;
		if (cpu_has_feature(CPU_FTR_ARCH_300))