Merge tag 'powerpc-6.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc updates from Michael Ellerman:

 - Add support for building the kernel using PC-relative addressing on
   Power10.

 - Allow HV KVM guests on Power10 to use prefixed instructions.

 - Unify support for the P2020 CPU (85xx) into a single machine
   description.

 - Always build the 64-bit kernel with 128-bit long double.

 - Drop support for several obsolete 2000's era development boards as
   identified by Paul Gortmaker.

 - A series fixing VFIO on Power since some generic changes.

 - Various other small features and fixes.

Thanks to Alexey Kardashevskiy, Andrew Donnellan, Benjamin Gray, Bo Liu,
Christophe Leroy, Dan Carpenter, David Binderman, Ira Weiny, Joel
Stanley, Kajol Jain, Kautuk Consul, Liang He, Luis Chamberlain, Masahiro
Yamada, Michael Neuling, Nathan Chancellor, Nathan Lynch, Nicholas
Miehlbradt, Nicholas Piggin, Nick Desaulniers, Nysal Jan K.A, Pali
Rohár, Paul Gortmaker, Paul Mackerras, Petr Vaněk, Randy Dunlap, Rob
Herring, Sachin Sant, Sean Christopherson, Segher Boessenkool, and
Timothy Pearson.

* tag 'powerpc-6.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (156 commits)
  powerpc/64s: Disable pcrel code model on Clang
  powerpc: Fix merge conflict between pcrel and copy_thread changes
  powerpc/configs/powernv: Add IGB=y
  powerpc/configs/64s: Drop JFS Filesystem
  powerpc/configs/64s: Use EXT4 to mount EXT2 filesystems
  powerpc/configs: Make pseries_defconfig an alias for ppc64le_guest
  powerpc/configs: Make pseries_le an alias for ppc64le_guest
  powerpc/configs: Incorporate generic kvm_guest.config into guest configs
  powerpc/configs: Add IBMVETH=y and IBMVNIC=y to guest configs
  powerpc/configs/64s: Enable Device Mapper options
  powerpc/configs/64s: Enable PSTORE
  powerpc/configs/64s: Enable VLAN support
  powerpc/configs/64s: Enable BLK_DEV_NVME
  powerpc/configs/64s: Drop REISERFS
  powerpc/configs/64s: Use SHA512 for module signatures
  powerpc/configs/64s: Enable IO_STRICT_DEVMEM
  powerpc/configs/64s: Enable SCHEDSTATS
  powerpc/configs/64s: Enable DEBUG_VM & other options
  powerpc/configs/64s: Enable EMULATED_STATS
  powerpc/configs/64s: Enable KUNIT and most tests
  ...

1 files changed, 32 insertions, 15 deletions

diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
index 3b70b5f80bd5..36b295e908ca 100644
--- a/arch/powerpc/kvm/book3s_hv.c
+++ b/arch/powerpc/kvm/book3s_hv.c
@@ -477,7 +477,7 @@ static void kvmppc_dump_regs(struct kvm_vcpu *vcpu)
 	for (r = 0; r < vcpu->arch.slb_max; ++r)
 		pr_err("  ESID = %.16llx VSID = %.16llx\n",
 		       vcpu->arch.slb[r].orige, vcpu->arch.slb[r].origv);
-	pr_err("lpcr = %.16lx sdr1 = %.16lx last_inst = %.8x\n",
+	pr_err("lpcr = %.16lx sdr1 = %.16lx last_inst = %.16lx\n",
 	       vcpu->arch.vcore->lpcr, vcpu->kvm->arch.sdr1,
 	       vcpu->arch.last_inst);
 }
@@ -1415,7 +1415,7 @@ static int kvmppc_hcall_impl_hv(unsigned long cmd)
 
 static int kvmppc_emulate_debug_inst(struct kvm_vcpu *vcpu)
 {
-	u32 last_inst;
+	ppc_inst_t last_inst;
 
 	if (kvmppc_get_last_inst(vcpu, INST_GENERIC, &last_inst) !=
 					EMULATE_DONE) {
@@ -1426,12 +1426,13 @@ static int kvmppc_emulate_debug_inst(struct kvm_vcpu *vcpu)
 		return RESUME_GUEST;
 	}
 
-	if (last_inst == KVMPPC_INST_SW_BREAKPOINT) {
+	if (ppc_inst_val(last_inst) == KVMPPC_INST_SW_BREAKPOINT) {
 		vcpu->run->exit_reason = KVM_EXIT_DEBUG;
 		vcpu->run->debug.arch.address = kvmppc_get_pc(vcpu);
 		return RESUME_HOST;
 	} else {
-		kvmppc_core_queue_program(vcpu, SRR1_PROGILL);
+		kvmppc_core_queue_program(vcpu, SRR1_PROGILL |
+				(kvmppc_get_msr(vcpu) & SRR1_PREFIXED));
 		return RESUME_GUEST;
 	}
 }
@@ -1479,9 +1480,11 @@ static int kvmppc_emulate_doorbell_instr(struct kvm_vcpu *vcpu)
 	unsigned long arg;
 	struct kvm *kvm = vcpu->kvm;
 	struct kvm_vcpu *tvcpu;
+	ppc_inst_t pinst;
 
-	if (kvmppc_get_last_inst(vcpu, INST_GENERIC, &inst) != EMULATE_DONE)
+	if (kvmppc_get_last_inst(vcpu, INST_GENERIC, &pinst) != EMULATE_DONE)
 		return RESUME_GUEST;
+	inst = ppc_inst_val(pinst);
 	if (get_op(inst) != 31)
 		return EMULATE_FAIL;
 	rb = get_rb(inst);
@@ -1633,7 +1636,8 @@ static int kvmppc_handle_exit_hv(struct kvm_vcpu *vcpu,
 		 * so that it knows that the machine check occurred.
 		 */
 		if (!vcpu->kvm->arch.fwnmi_enabled) {
-			ulong flags = vcpu->arch.shregs.msr & 0x083c0000;
+			ulong flags = (vcpu->arch.shregs.msr & 0x083c0000) |
+					(kvmppc_get_msr(vcpu) & SRR1_PREFIXED);
 			kvmppc_core_queue_machine_check(vcpu, flags);
 			r = RESUME_GUEST;
 			break;
@@ -1662,7 +1666,8 @@ static int kvmppc_handle_exit_hv(struct kvm_vcpu *vcpu,
 		 * as a result of a hypervisor emulation interrupt
 		 * (e40) getting turned into a 700 by BML RTAS.
 		 */
-		flags = vcpu->arch.shregs.msr & 0x1f0000ull;
+		flags = (vcpu->arch.shregs.msr & 0x1f0000ull) |
+			(kvmppc_get_msr(vcpu) & SRR1_PREFIXED);
 		kvmppc_core_queue_program(vcpu, flags);
 		r = RESUME_GUEST;
 		break;
@@ -1743,6 +1748,7 @@ static int kvmppc_handle_exit_hv(struct kvm_vcpu *vcpu,
 
 		if (!(vcpu->arch.fault_dsisr & (DSISR_NOHPTE | DSISR_PROTFAULT))) {
 			kvmppc_core_queue_data_storage(vcpu,
+				kvmppc_get_msr(vcpu) & SRR1_PREFIXED,
 				vcpu->arch.fault_dar, vcpu->arch.fault_dsisr);
 			r = RESUME_GUEST;
 			break;
@@ -1761,6 +1767,7 @@ static int kvmppc_handle_exit_hv(struct kvm_vcpu *vcpu,
 			r = RESUME_PAGE_FAULT;
 		} else {
 			kvmppc_core_queue_data_storage(vcpu,
+				kvmppc_get_msr(vcpu) & SRR1_PREFIXED,
 				vcpu->arch.fault_dar, err);
 			r = RESUME_GUEST;
 		}
@@ -1788,7 +1795,8 @@ static int kvmppc_handle_exit_hv(struct kvm_vcpu *vcpu,
 
 		if (!(vcpu->arch.fault_dsisr & SRR1_ISI_NOPT)) {
 			kvmppc_core_queue_inst_storage(vcpu,
-				vcpu->arch.fault_dsisr);
+				vcpu->arch.fault_dsisr |
+				(kvmppc_get_msr(vcpu) & SRR1_PREFIXED));
 			r = RESUME_GUEST;
 			break;
 		}
@@ -1805,7 +1813,8 @@ static int kvmppc_handle_exit_hv(struct kvm_vcpu *vcpu,
 		} else if (err == -1) {
 			r = RESUME_PAGE_FAULT;
 		} else {
-			kvmppc_core_queue_inst_storage(vcpu, err);
+			kvmppc_core_queue_inst_storage(vcpu,
+				err | (kvmppc_get_msr(vcpu) & SRR1_PREFIXED));
 			r = RESUME_GUEST;
 		}
 		break;
@@ -1826,7 +1835,8 @@ static int kvmppc_handle_exit_hv(struct kvm_vcpu *vcpu,
 		if (vcpu->guest_debug & KVM_GUESTDBG_USE_SW_BP) {
 			r = kvmppc_emulate_debug_inst(vcpu);
 		} else {
-			kvmppc_core_queue_program(vcpu, SRR1_PROGILL);
+			kvmppc_core_queue_program(vcpu, SRR1_PROGILL |
+				(kvmppc_get_msr(vcpu) & SRR1_PREFIXED));
 			r = RESUME_GUEST;
 		}
 		break;
@@ -1867,7 +1877,8 @@ static int kvmppc_handle_exit_hv(struct kvm_vcpu *vcpu,
 				r = kvmppc_tm_unavailable(vcpu);
 		}
 		if (r == EMULATE_FAIL) {
-			kvmppc_core_queue_program(vcpu, SRR1_PROGILL);
+			kvmppc_core_queue_program(vcpu, SRR1_PROGILL |
+				(kvmppc_get_msr(vcpu) & SRR1_PREFIXED));
 			r = RESUME_GUEST;
 		}
 		break;
@@ -1997,14 +2008,15 @@ static int kvmppc_handle_nested_exit(struct kvm_vcpu *vcpu)
 		 */
 		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,
-						 &vcpu->arch.emul_inst);
+			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
@@ -2921,13 +2933,18 @@ static int kvmppc_core_vcpu_create_hv(struct kvm_vcpu *vcpu)
 
 	/*
 	 * Set the default HFSCR for the guest from the host value.
-	 * This value is only used on POWER9.
-	 * On POWER9, we want to virtualize the doorbell facility, so we
+	 * This value is only used on POWER9 and later.
+	 * On >= POWER9, we want to virtualize the doorbell facility, so we
 	 * don't set the HFSCR_MSGP bit, and that causes those instructions
 	 * to trap and then we emulate them.
 	 */
 	vcpu->arch.hfscr = HFSCR_TAR | HFSCR_EBB | HFSCR_PM | HFSCR_BHRB |
 		HFSCR_DSCR | HFSCR_VECVSX | HFSCR_FP;
+
+	/* On POWER10 and later, allow prefixed instructions */
+	if (cpu_has_feature(CPU_FTR_ARCH_31))
+		vcpu->arch.hfscr |= HFSCR_PREFIX;
+
 	if (cpu_has_feature(CPU_FTR_HVMODE)) {
 		vcpu->arch.hfscr &= mfspr(SPRN_HFSCR);
 #ifdef CONFIG_PPC_TRANSACTIONAL_MEM