Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm updates from Paolo Bonzini:
 "ARM64:

   - Eager page splitting optimization for dirty logging, optionally
     allowing for a VM to avoid the cost of hugepage splitting in the
     stage-2 fault path.

   - Arm FF-A proxy for pKVM, allowing a pKVM host to safely interact
     with services that live in the Secure world. pKVM intervenes on
     FF-A calls to guarantee the host doesn't misuse memory donated to
     the hyp or a pKVM guest.

   - Support for running the split hypervisor with VHE enabled, known as
     'hVHE' mode. This is extremely useful for testing the split
     hypervisor on VHE-only systems, and paves the way for new use cases
     that depend on having two TTBRs available at EL2.

   - Generalized framework for configurable ID registers from userspace.
     KVM/arm64 currently prevents arbitrary CPU feature set
     configuration from userspace, but the intent is to relax this
     limitation and allow userspace to select a feature set consistent
     with the CPU.

   - Enable the use of Branch Target Identification (FEAT_BTI) in the
     hypervisor.

   - Use a separate set of pointer authentication keys for the
     hypervisor when running in protected mode, as the host is untrusted
     at runtime.

   - Ensure timer IRQs are consistently released in the init failure
     paths.

   - Avoid trapping CTR_EL0 on systems with Enhanced Virtualization
     Traps (FEAT_EVT), as it is a register commonly read from userspace.

   - Erratum workaround for the upcoming AmpereOne part, which has
     broken hardware A/D state management.

  RISC-V:

   - Redirect AMO load/store misaligned traps to KVM guest

   - Trap-n-emulate AIA in-kernel irqchip for KVM guest

   - Svnapot support for KVM Guest

  s390:

   - New uvdevice secret API

   - CMM selftest and fixes

   - fix racy access to target CPU for diag 9c

  x86:

   - Fix missing/incorrect #GP checks on ENCLS

   - Use standard mmu_notifier hooks for handling APIC access page

   - Drop now unnecessary TR/TSS load after VM-Exit on AMD

   - Print more descriptive information about the status of SEV and
     SEV-ES during module load

   - Add a test for splitting and reconstituting hugepages during and
     after dirty logging

   - Add support for CPU pinning in demand paging test

   - Add support for AMD PerfMonV2, with a variety of cleanups and minor
     fixes included along the way

   - Add a "nx_huge_pages=never" option to effectively avoid creating NX
     hugepage recovery threads (because nx_huge_pages=off can be toggled
     at runtime)

   - Move handling of PAT out of MTRR code and dedup SVM+VMX code

   - Fix output of PIC poll command emulation when there's an interrupt

   - Add a maintainer's handbook to document KVM x86 processes,
     preferred coding style, testing expectations, etc.

   - Misc cleanups, fixes and comments

  Generic:

   - Miscellaneous bugfixes and cleanups

  Selftests:

   - Generate dependency files so that partial rebuilds work as
     expected"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (153 commits)
  Documentation/process: Add a maintainer handbook for KVM x86
  Documentation/process: Add a label for the tip tree handbook's coding style
  KVM: arm64: Fix misuse of KVM_ARM_VCPU_POWER_OFF bit index
  RISC-V: KVM: Remove unneeded semicolon
  RISC-V: KVM: Allow Svnapot extension for Guest/VM
  riscv: kvm: define vcpu_sbi_ext_pmu in header
  RISC-V: KVM: Expose IMSIC registers as attributes of AIA irqchip
  RISC-V: KVM: Add in-kernel virtualization of AIA IMSIC
  RISC-V: KVM: Expose APLIC registers as attributes of AIA irqchip
  RISC-V: KVM: Add in-kernel emulation of AIA APLIC
  RISC-V: KVM: Implement device interface for AIA irqchip
  RISC-V: KVM: Skeletal in-kernel AIA irqchip support
  RISC-V: KVM: Set kvm_riscv_aia_nr_hgei to zero
  RISC-V: KVM: Add APLIC related defines
  RISC-V: KVM: Add IMSIC related defines
  RISC-V: KVM: Implement guest external interrupt line management
  KVM: x86: Remove PRIx* definitions as they are solely for user space
  s390/uv: Update query for secret-UVCs
  s390/uv: replace scnprintf with sysfs_emit
  s390/uvdevice: Add 'Lock Secret Store' UVC
  ...

6 files changed, 189 insertions, 31 deletions

diff --git a/arch/riscv/include/asm/csr.h b/arch/riscv/include/asm/csr.h
index b98b3b6c9da2..7bac43a3176e 100644
--- a/arch/riscv/include/asm/csr.h
+++ b/arch/riscv/include/asm/csr.h
@@ -90,7 +90,9 @@
 #define EXC_INST_ACCESS		1
 #define EXC_INST_ILLEGAL	2
 #define EXC_BREAKPOINT		3
+#define EXC_LOAD_MISALIGNED	4
 #define EXC_LOAD_ACCESS		5
+#define EXC_STORE_MISALIGNED	6
 #define EXC_STORE_ACCESS	7
 #define EXC_SYSCALL		8
 #define EXC_HYPERVISOR_SYSCALL	9
diff --git a/arch/riscv/include/asm/kvm_aia.h b/arch/riscv/include/asm/kvm_aia.h
index 1de0717112e5..1f37b600ca47 100644
--- a/arch/riscv/include/asm/kvm_aia.h
+++ b/arch/riscv/include/asm/kvm_aia.h
@@ -20,6 +20,33 @@ struct kvm_aia {
 
 	/* In-kernel irqchip initialized */
 	bool		initialized;
+
+	/* Virtualization mode (Emulation, HW Accelerated, or Auto) */
+	u32		mode;
+
+	/* Number of MSIs */
+	u32		nr_ids;
+
+	/* Number of wired IRQs */
+	u32		nr_sources;
+
+	/* Number of group bits in IMSIC address */
+	u32		nr_group_bits;
+
+	/* Position of group bits in IMSIC address */
+	u32		nr_group_shift;
+
+	/* Number of hart bits in IMSIC address */
+	u32		nr_hart_bits;
+
+	/* Number of guest bits in IMSIC address */
+	u32		nr_guest_bits;
+
+	/* Guest physical address of APLIC */
+	gpa_t		aplic_addr;
+
+	/* Internal state of APLIC */
+	void		*aplic_state;
 };
 
 struct kvm_vcpu_aia_csr {
@@ -38,25 +65,53 @@ struct kvm_vcpu_aia {
 
 	/* CPU AIA CSR context upon Guest VCPU reset */
 	struct kvm_vcpu_aia_csr guest_reset_csr;
+
+	/* Guest physical address of IMSIC for this VCPU */
+	gpa_t		imsic_addr;
+
+	/* HART index of IMSIC extacted from guest physical address */
+	u32		hart_index;
+
+	/* Internal state of IMSIC for this VCPU */
+	void		*imsic_state;
 };
 
+#define KVM_RISCV_AIA_UNDEF_ADDR	(-1)
+
 #define kvm_riscv_aia_initialized(k)	((k)->arch.aia.initialized)
 
 #define irqchip_in_kernel(k)		((k)->arch.aia.in_kernel)
 
+extern unsigned int kvm_riscv_aia_nr_hgei;
+extern unsigned int kvm_riscv_aia_max_ids;
 DECLARE_STATIC_KEY_FALSE(kvm_riscv_aia_available);
 #define kvm_riscv_aia_available() \
 	static_branch_unlikely(&kvm_riscv_aia_available)
 
+extern struct kvm_device_ops kvm_riscv_aia_device_ops;
+
+void kvm_riscv_vcpu_aia_imsic_release(struct kvm_vcpu *vcpu);
+int kvm_riscv_vcpu_aia_imsic_update(struct kvm_vcpu *vcpu);
+
 #define KVM_RISCV_AIA_IMSIC_TOPEI	(ISELECT_MASK + 1)
-static inline int kvm_riscv_vcpu_aia_imsic_rmw(struct kvm_vcpu *vcpu,
-					       unsigned long isel,
-					       unsigned long *val,
-					       unsigned long new_val,
-					       unsigned long wr_mask)
-{
-	return 0;
-}
+int kvm_riscv_vcpu_aia_imsic_rmw(struct kvm_vcpu *vcpu, unsigned long isel,
+				 unsigned long *val, unsigned long new_val,
+				 unsigned long wr_mask);
+int kvm_riscv_aia_imsic_rw_attr(struct kvm *kvm, unsigned long type,
+				bool write, unsigned long *val);
+int kvm_riscv_aia_imsic_has_attr(struct kvm *kvm, unsigned long type);
+void kvm_riscv_vcpu_aia_imsic_reset(struct kvm_vcpu *vcpu);
+int kvm_riscv_vcpu_aia_imsic_inject(struct kvm_vcpu *vcpu,
+				    u32 guest_index, u32 offset, u32 iid);
+int kvm_riscv_vcpu_aia_imsic_init(struct kvm_vcpu *vcpu);
+void kvm_riscv_vcpu_aia_imsic_cleanup(struct kvm_vcpu *vcpu);
+
+int kvm_riscv_aia_aplic_set_attr(struct kvm *kvm, unsigned long type, u32 v);
+int kvm_riscv_aia_aplic_get_attr(struct kvm *kvm, unsigned long type, u32 *v);
+int kvm_riscv_aia_aplic_has_attr(struct kvm *kvm, unsigned long type);
+int kvm_riscv_aia_aplic_inject(struct kvm *kvm, u32 source, bool level);
+int kvm_riscv_aia_aplic_init(struct kvm *kvm);
+void kvm_riscv_aia_aplic_cleanup(struct kvm *kvm);
 
 #ifdef CONFIG_32BIT
 void kvm_riscv_vcpu_aia_flush_interrupts(struct kvm_vcpu *vcpu);
@@ -93,31 +148,23 @@ int kvm_riscv_vcpu_aia_rmw_ireg(struct kvm_vcpu *vcpu, unsigned int csr_num,
 { .base = CSR_SIREG,      .count = 1, .func = kvm_riscv_vcpu_aia_rmw_ireg }, \
 { .base = CSR_STOPEI,     .count = 1, .func = kvm_riscv_vcpu_aia_rmw_topei },
 
-static inline int kvm_riscv_vcpu_aia_update(struct kvm_vcpu *vcpu)
-{
-	return 1;
-}
-
-static inline void kvm_riscv_vcpu_aia_reset(struct kvm_vcpu *vcpu)
-{
-}
-
-static inline int kvm_riscv_vcpu_aia_init(struct kvm_vcpu *vcpu)
-{
-	return 0;
-}
+int kvm_riscv_vcpu_aia_update(struct kvm_vcpu *vcpu);
+void kvm_riscv_vcpu_aia_reset(struct kvm_vcpu *vcpu);
+int kvm_riscv_vcpu_aia_init(struct kvm_vcpu *vcpu);
+void kvm_riscv_vcpu_aia_deinit(struct kvm_vcpu *vcpu);
 
-static inline void kvm_riscv_vcpu_aia_deinit(struct kvm_vcpu *vcpu)
-{
-}
+int kvm_riscv_aia_inject_msi_by_id(struct kvm *kvm, u32 hart_index,
+				   u32 guest_index, u32 iid);
+int kvm_riscv_aia_inject_msi(struct kvm *kvm, struct kvm_msi *msi);
+int kvm_riscv_aia_inject_irq(struct kvm *kvm, unsigned int irq, bool level);
 
-static inline void kvm_riscv_aia_init_vm(struct kvm *kvm)
-{
-}
+void kvm_riscv_aia_init_vm(struct kvm *kvm);
+void kvm_riscv_aia_destroy_vm(struct kvm *kvm);
 
-static inline void kvm_riscv_aia_destroy_vm(struct kvm *kvm)
-{
-}
+int kvm_riscv_aia_alloc_hgei(int cpu, struct kvm_vcpu *owner,
+			     void __iomem **hgei_va, phys_addr_t *hgei_pa);
+void kvm_riscv_aia_free_hgei(int cpu, int hgei);
+void kvm_riscv_aia_wakeon_hgei(struct kvm_vcpu *owner, bool enable);
 
 void kvm_riscv_aia_enable(void);
 void kvm_riscv_aia_disable(void);
diff --git a/arch/riscv/include/asm/kvm_aia_aplic.h b/arch/riscv/include/asm/kvm_aia_aplic.h
new file mode 100644
index 000000000000..6dd1a4809ec1
--- /dev/null
+++ b/arch/riscv/include/asm/kvm_aia_aplic.h
@@ -0,0 +1,58 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2021 Western Digital Corporation or its affiliates.
+ * Copyright (C) 2022 Ventana Micro Systems Inc.
+ */
+#ifndef __KVM_RISCV_AIA_IMSIC_H
+#define __KVM_RISCV_AIA_IMSIC_H
+
+#include <linux/bitops.h>
+
+#define APLIC_MAX_IDC			BIT(14)
+#define APLIC_MAX_SOURCE		1024
+
+#define APLIC_DOMAINCFG			0x0000
+#define APLIC_DOMAINCFG_RDONLY		0x80000000
+#define APLIC_DOMAINCFG_IE		BIT(8)
+#define APLIC_DOMAINCFG_DM		BIT(2)
+#define APLIC_DOMAINCFG_BE		BIT(0)
+
+#define APLIC_SOURCECFG_BASE		0x0004
+#define APLIC_SOURCECFG_D		BIT(10)
+#define APLIC_SOURCECFG_CHILDIDX_MASK	0x000003ff
+#define APLIC_SOURCECFG_SM_MASK	0x00000007
+#define APLIC_SOURCECFG_SM_INACTIVE	0x0
+#define APLIC_SOURCECFG_SM_DETACH	0x1
+#define APLIC_SOURCECFG_SM_EDGE_RISE	0x4
+#define APLIC_SOURCECFG_SM_EDGE_FALL	0x5
+#define APLIC_SOURCECFG_SM_LEVEL_HIGH	0x6
+#define APLIC_SOURCECFG_SM_LEVEL_LOW	0x7
+
+#define APLIC_IRQBITS_PER_REG		32
+
+#define APLIC_SETIP_BASE		0x1c00
+#define APLIC_SETIPNUM			0x1cdc
+
+#define APLIC_CLRIP_BASE		0x1d00
+#define APLIC_CLRIPNUM			0x1ddc
+
+#define APLIC_SETIE_BASE		0x1e00
+#define APLIC_SETIENUM			0x1edc
+
+#define APLIC_CLRIE_BASE		0x1f00
+#define APLIC_CLRIENUM			0x1fdc
+
+#define APLIC_SETIPNUM_LE		0x2000
+#define APLIC_SETIPNUM_BE		0x2004
+
+#define APLIC_GENMSI			0x3000
+
+#define APLIC_TARGET_BASE		0x3004
+#define APLIC_TARGET_HART_IDX_SHIFT	18
+#define APLIC_TARGET_HART_IDX_MASK	0x3fff
+#define APLIC_TARGET_GUEST_IDX_SHIFT	12
+#define APLIC_TARGET_GUEST_IDX_MASK	0x3f
+#define APLIC_TARGET_IPRIO_MASK	0xff
+#define APLIC_TARGET_EIID_MASK	0x7ff
+
+#endif
diff --git a/arch/riscv/include/asm/kvm_aia_imsic.h b/arch/riscv/include/asm/kvm_aia_imsic.h
new file mode 100644
index 000000000000..da5881d2bde0
--- /dev/null
+++ b/arch/riscv/include/asm/kvm_aia_imsic.h
@@ -0,0 +1,38 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2021 Western Digital Corporation or its affiliates.
+ * Copyright (C) 2022 Ventana Micro Systems Inc.
+ */
+#ifndef __KVM_RISCV_AIA_IMSIC_H
+#define __KVM_RISCV_AIA_IMSIC_H
+
+#include <linux/types.h>
+#include <asm/csr.h>
+
+#define IMSIC_MMIO_PAGE_SHIFT		12
+#define IMSIC_MMIO_PAGE_SZ		(1UL << IMSIC_MMIO_PAGE_SHIFT)
+#define IMSIC_MMIO_PAGE_LE		0x00
+#define IMSIC_MMIO_PAGE_BE		0x04
+
+#define IMSIC_MIN_ID			63
+#define IMSIC_MAX_ID			2048
+
+#define IMSIC_EIDELIVERY		0x70
+
+#define IMSIC_EITHRESHOLD		0x72
+
+#define IMSIC_EIP0			0x80
+#define IMSIC_EIP63			0xbf
+#define IMSIC_EIPx_BITS			32
+
+#define IMSIC_EIE0			0xc0
+#define IMSIC_EIE63			0xff
+#define IMSIC_EIEx_BITS			32
+
+#define IMSIC_FIRST			IMSIC_EIDELIVERY
+#define IMSIC_LAST			IMSIC_EIE63
+
+#define IMSIC_MMIO_SETIPNUM_LE		0x00
+#define IMSIC_MMIO_SETIPNUM_BE		0x04
+
+#endif
diff --git a/arch/riscv/include/asm/kvm_host.h b/arch/riscv/include/asm/kvm_host.h
index bd47a1dc2ff8..2d8ee53b66c7 100644
--- a/arch/riscv/include/asm/kvm_host.h
+++ b/arch/riscv/include/asm/kvm_host.h
@@ -28,6 +28,8 @@
 
 #define KVM_VCPU_MAX_FEATURES		0
 
+#define KVM_IRQCHIP_NUM_PINS		1024
+
 #define KVM_REQ_SLEEP \
 	KVM_ARCH_REQ_FLAGS(0, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
 #define KVM_REQ_VCPU_RESET		KVM_ARCH_REQ(1)
@@ -320,6 +322,8 @@ int kvm_riscv_gstage_vmid_init(struct kvm *kvm);
 bool kvm_riscv_gstage_vmid_ver_changed(struct kvm_vmid *vmid);
 void kvm_riscv_gstage_vmid_update(struct kvm_vcpu *vcpu);
 
+int kvm_riscv_setup_default_irq_routing(struct kvm *kvm, u32 lines);
+
 void __kvm_riscv_unpriv_trap(void);
 
 unsigned long kvm_riscv_vcpu_unpriv_read(struct kvm_vcpu *vcpu,
diff --git a/arch/riscv/include/asm/kvm_vcpu_sbi.h b/arch/riscv/include/asm/kvm_vcpu_sbi.h
index 4278125a38a5..cdcf0ff07be7 100644
--- a/arch/riscv/include/asm/kvm_vcpu_sbi.h
+++ b/arch/riscv/include/asm/kvm_vcpu_sbi.h
@@ -14,9 +14,15 @@
 #define KVM_SBI_VERSION_MAJOR 1
 #define KVM_SBI_VERSION_MINOR 0
 
+enum kvm_riscv_sbi_ext_status {
+	KVM_RISCV_SBI_EXT_UNINITIALIZED,
+	KVM_RISCV_SBI_EXT_AVAILABLE,
+	KVM_RISCV_SBI_EXT_UNAVAILABLE,
+};
+
 struct kvm_vcpu_sbi_context {
 	int return_handled;
-	bool extension_disabled[KVM_RISCV_SBI_EXT_MAX];
+	enum kvm_riscv_sbi_ext_status ext_status[KVM_RISCV_SBI_EXT_MAX];
 };
 
 struct kvm_vcpu_sbi_return {
@@ -66,4 +72,7 @@ extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_hsm;
 extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_experimental;
 extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_vendor;
 
+#ifdef CONFIG_RISCV_PMU_SBI
+extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_pmu;
+#endif
 #endif /* __RISCV_KVM_VCPU_SBI_H__ */