Re: [PATCH kvmtool v3 4/9] update_headers: Sync kvm UAPI headers with linux v5.1-rc1

[Andre Przywara <andre.przywara@arm.com>]

On Thu, 30 May 2019 16:13:09 +0100
Dave Martin <Dave.Martin@arm.com> wrote:

> Subject: [PATCH kvmtool v3 4/9] update_headers: Sync kvm UAPI headers with linux v5.1-rc1

This is actually v5.2-rc1, isn't it?

Apart from that:

> Pull in upstream UAPI headers, for subsequent arm64 SVE / ptrauth
> support (among other things).
> 
> Signed-off-by: Dave Martin <Dave.Martin@arm.com>

Reviewed-by: Andre Przywara <andre.przywara@arm.com>

Cheers,
Andre.

> ---
>  arm/aarch64/include/asm/kvm.h         | 43 ++++++++++++++++++++++++++++
>  arm/aarch64/include/asm/sve_context.h | 53 +++++++++++++++++++++++++++++++++++
>  include/linux/kvm.h                   | 15 ++++++++--
>  powerpc/include/asm/kvm.h             | 48 +++++++++++++++++++++++++++++++
>  x86/include/asm/kvm.h                 |  1 +
>  5 files changed, 158 insertions(+), 2 deletions(-)
>  create mode 100644 arm/aarch64/include/asm/sve_context.h
> 
> diff --git a/arm/aarch64/include/asm/kvm.h b/arm/aarch64/include/asm/kvm.h
> index 97c3478..7b7ac0f 100644
> --- a/arm/aarch64/include/asm/kvm.h
> +++ b/arm/aarch64/include/asm/kvm.h
> @@ -35,6 +35,7 @@
>  #include <linux/psci.h>
>  #include <linux/types.h>
>  #include <asm/ptrace.h>
> +#include <asm/sve_context.h>
>  
>  #define __KVM_HAVE_GUEST_DEBUG
>  #define __KVM_HAVE_IRQ_LINE
> @@ -102,6 +103,9 @@ struct kvm_regs {
>  #define KVM_ARM_VCPU_EL1_32BIT		1 /* CPU running a 32bit VM */
>  #define KVM_ARM_VCPU_PSCI_0_2		2 /* CPU uses PSCI v0.2 */
>  #define KVM_ARM_VCPU_PMU_V3		3 /* Support guest PMUv3 */
> +#define KVM_ARM_VCPU_SVE		4 /* enable SVE for this CPU */
> +#define KVM_ARM_VCPU_PTRAUTH_ADDRESS	5 /* VCPU uses address authentication */
> +#define KVM_ARM_VCPU_PTRAUTH_GENERIC	6 /* VCPU uses generic authentication */
>  
>  struct kvm_vcpu_init {
>  	__u32 target;
> @@ -226,6 +230,45 @@ struct kvm_vcpu_events {
>  					 KVM_REG_ARM_FW | ((r) & 0xffff))
>  #define KVM_REG_ARM_PSCI_VERSION	KVM_REG_ARM_FW_REG(0)
>  
> +/* SVE registers */
> +#define KVM_REG_ARM64_SVE		(0x15 << KVM_REG_ARM_COPROC_SHIFT)
> +
> +/* Z- and P-regs occupy blocks at the following offsets within this range: */
> +#define KVM_REG_ARM64_SVE_ZREG_BASE	0
> +#define KVM_REG_ARM64_SVE_PREG_BASE	0x400
> +#define KVM_REG_ARM64_SVE_FFR_BASE	0x600
> +
> +#define KVM_ARM64_SVE_NUM_ZREGS		__SVE_NUM_ZREGS
> +#define KVM_ARM64_SVE_NUM_PREGS		__SVE_NUM_PREGS
> +
> +#define KVM_ARM64_SVE_MAX_SLICES	32
> +
> +#define KVM_REG_ARM64_SVE_ZREG(n, i)					\
> +	(KVM_REG_ARM64 | KVM_REG_ARM64_SVE | KVM_REG_ARM64_SVE_ZREG_BASE | \
> +	 KVM_REG_SIZE_U2048 |						\
> +	 (((n) & (KVM_ARM64_SVE_NUM_ZREGS - 1)) << 5) |			\
> +	 ((i) & (KVM_ARM64_SVE_MAX_SLICES - 1)))
> +
> +#define KVM_REG_ARM64_SVE_PREG(n, i)					\
> +	(KVM_REG_ARM64 | KVM_REG_ARM64_SVE | KVM_REG_ARM64_SVE_PREG_BASE | \
> +	 KVM_REG_SIZE_U256 |						\
> +	 (((n) & (KVM_ARM64_SVE_NUM_PREGS - 1)) << 5) |			\
> +	 ((i) & (KVM_ARM64_SVE_MAX_SLICES - 1)))
> +
> +#define KVM_REG_ARM64_SVE_FFR(i)					\
> +	(KVM_REG_ARM64 | KVM_REG_ARM64_SVE | KVM_REG_ARM64_SVE_FFR_BASE | \
> +	 KVM_REG_SIZE_U256 |						\
> +	 ((i) & (KVM_ARM64_SVE_MAX_SLICES - 1)))
> +
> +#define KVM_ARM64_SVE_VQ_MIN __SVE_VQ_MIN
> +#define KVM_ARM64_SVE_VQ_MAX __SVE_VQ_MAX
> +
> +/* Vector lengths pseudo-register: */
> +#define KVM_REG_ARM64_SVE_VLS		(KVM_REG_ARM64 | KVM_REG_ARM64_SVE | \
> +					 KVM_REG_SIZE_U512 | 0xffff)
> +#define KVM_ARM64_SVE_VLS_WORDS	\
> +	((KVM_ARM64_SVE_VQ_MAX - KVM_ARM64_SVE_VQ_MIN) / 64 + 1)
> +
>  /* Device Control API: ARM VGIC */
>  #define KVM_DEV_ARM_VGIC_GRP_ADDR	0
>  #define KVM_DEV_ARM_VGIC_GRP_DIST_REGS	1
> diff --git a/arm/aarch64/include/asm/sve_context.h b/arm/aarch64/include/asm/sve_context.h
> new file mode 100644
> index 0000000..754ab75
> --- /dev/null
> +++ b/arm/aarch64/include/asm/sve_context.h
> @@ -0,0 +1,53 @@
> +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
> +/* Copyright (C) 2017-2018 ARM Limited */
> +
> +/*
> + * For use by other UAPI headers only.
> + * Do not make direct use of header or its definitions.
> + */
> +
> +#ifndef _UAPI__ASM_SVE_CONTEXT_H
> +#define _UAPI__ASM_SVE_CONTEXT_H
> +
> +#include <linux/types.h>
> +
> +#define __SVE_VQ_BYTES		16	/* number of bytes per quadword */
> +
> +#define __SVE_VQ_MIN		1
> +#define __SVE_VQ_MAX		512
> +
> +#define __SVE_VL_MIN		(__SVE_VQ_MIN * __SVE_VQ_BYTES)
> +#define __SVE_VL_MAX		(__SVE_VQ_MAX * __SVE_VQ_BYTES)
> +
> +#define __SVE_NUM_ZREGS		32
> +#define __SVE_NUM_PREGS		16
> +
> +#define __sve_vl_valid(vl)			\
> +	((vl) % __SVE_VQ_BYTES == 0 &&		\
> +	 (vl) >= __SVE_VL_MIN &&		\
> +	 (vl) <= __SVE_VL_MAX)
> +
> +#define __sve_vq_from_vl(vl)	((vl) / __SVE_VQ_BYTES)
> +#define __sve_vl_from_vq(vq)	((vq) * __SVE_VQ_BYTES)
> +
> +#define __SVE_ZREG_SIZE(vq)	((__u32)(vq) * __SVE_VQ_BYTES)
> +#define __SVE_PREG_SIZE(vq)	((__u32)(vq) * (__SVE_VQ_BYTES / 8))
> +#define __SVE_FFR_SIZE(vq)	__SVE_PREG_SIZE(vq)
> +
> +#define __SVE_ZREGS_OFFSET	0
> +#define __SVE_ZREG_OFFSET(vq, n) \
> +	(__SVE_ZREGS_OFFSET + __SVE_ZREG_SIZE(vq) * (n))
> +#define __SVE_ZREGS_SIZE(vq) \
> +	(__SVE_ZREG_OFFSET(vq, __SVE_NUM_ZREGS) - __SVE_ZREGS_OFFSET)
> +
> +#define __SVE_PREGS_OFFSET(vq) \
> +	(__SVE_ZREGS_OFFSET + __SVE_ZREGS_SIZE(vq))
> +#define __SVE_PREG_OFFSET(vq, n) \
> +	(__SVE_PREGS_OFFSET(vq) + __SVE_PREG_SIZE(vq) * (n))
> +#define __SVE_PREGS_SIZE(vq) \
> +	(__SVE_PREG_OFFSET(vq, __SVE_NUM_PREGS) - __SVE_PREGS_OFFSET(vq))
> +
> +#define __SVE_FFR_OFFSET(vq) \
> +	(__SVE_PREGS_OFFSET(vq) + __SVE_PREGS_SIZE(vq))
> +
> +#endif /* ! _UAPI__ASM_SVE_CONTEXT_H */
> diff --git a/include/linux/kvm.h b/include/linux/kvm.h
> index 6d4ea4b..2fe12b4 100644
> --- a/include/linux/kvm.h
> +++ b/include/linux/kvm.h
> @@ -986,8 +986,13 @@ struct kvm_ppc_resize_hpt {
>  #define KVM_CAP_HYPERV_ENLIGHTENED_VMCS 163
>  #define KVM_CAP_EXCEPTION_PAYLOAD 164
>  #define KVM_CAP_ARM_VM_IPA_SIZE 165
> -#define KVM_CAP_MANUAL_DIRTY_LOG_PROTECT 166
> +#define KVM_CAP_MANUAL_DIRTY_LOG_PROTECT 166 /* Obsolete */
>  #define KVM_CAP_HYPERV_CPUID 167
> +#define KVM_CAP_MANUAL_DIRTY_LOG_PROTECT2 168
> +#define KVM_CAP_PPC_IRQ_XIVE 169
> +#define KVM_CAP_ARM_SVE 170
> +#define KVM_CAP_ARM_PTRAUTH_ADDRESS 171
> +#define KVM_CAP_ARM_PTRAUTH_GENERIC 172
>  
>  #ifdef KVM_CAP_IRQ_ROUTING
>  
> @@ -1145,6 +1150,7 @@ struct kvm_dirty_tlb {
>  #define KVM_REG_SIZE_U256	0x0050000000000000ULL
>  #define KVM_REG_SIZE_U512	0x0060000000000000ULL
>  #define KVM_REG_SIZE_U1024	0x0070000000000000ULL
> +#define KVM_REG_SIZE_U2048	0x0080000000000000ULL
>  
>  struct kvm_reg_list {
>  	__u64 n; /* number of regs */
> @@ -1211,6 +1217,8 @@ enum kvm_device_type {
>  #define KVM_DEV_TYPE_ARM_VGIC_V3	KVM_DEV_TYPE_ARM_VGIC_V3
>  	KVM_DEV_TYPE_ARM_VGIC_ITS,
>  #define KVM_DEV_TYPE_ARM_VGIC_ITS	KVM_DEV_TYPE_ARM_VGIC_ITS
> +	KVM_DEV_TYPE_XIVE,
> +#define KVM_DEV_TYPE_XIVE		KVM_DEV_TYPE_XIVE
>  	KVM_DEV_TYPE_MAX,
>  };
>  
> @@ -1434,12 +1442,15 @@ struct kvm_enc_region {
>  #define KVM_GET_NESTED_STATE         _IOWR(KVMIO, 0xbe, struct kvm_nested_state)
>  #define KVM_SET_NESTED_STATE         _IOW(KVMIO,  0xbf, struct kvm_nested_state)
>  
> -/* Available with KVM_CAP_MANUAL_DIRTY_LOG_PROTECT */
> +/* Available with KVM_CAP_MANUAL_DIRTY_LOG_PROTECT_2 */
>  #define KVM_CLEAR_DIRTY_LOG          _IOWR(KVMIO, 0xc0, struct kvm_clear_dirty_log)
>  
>  /* Available with KVM_CAP_HYPERV_CPUID */
>  #define KVM_GET_SUPPORTED_HV_CPUID _IOWR(KVMIO, 0xc1, struct kvm_cpuid2)
>  
> +/* Available with KVM_CAP_ARM_SVE */
> +#define KVM_ARM_VCPU_FINALIZE	  _IOW(KVMIO,  0xc2, int)
> +
>  /* Secure Encrypted Virtualization command */
>  enum sev_cmd_id {
>  	/* Guest initialization commands */
> diff --git a/powerpc/include/asm/kvm.h b/powerpc/include/asm/kvm.h
> index 8c876c1..b0f72de 100644
> --- a/powerpc/include/asm/kvm.h
> +++ b/powerpc/include/asm/kvm.h
> @@ -463,10 +463,12 @@ struct kvm_ppc_cpu_char {
>  #define KVM_PPC_CPU_CHAR_BR_HINT_HONOURED	(1ULL << 58)
>  #define KVM_PPC_CPU_CHAR_MTTRIG_THR_RECONF	(1ULL << 57)
>  #define KVM_PPC_CPU_CHAR_COUNT_CACHE_DIS	(1ULL << 56)
> +#define KVM_PPC_CPU_CHAR_BCCTR_FLUSH_ASSIST	(1ull << 54)
>  
>  #define KVM_PPC_CPU_BEHAV_FAVOUR_SECURITY	(1ULL << 63)
>  #define KVM_PPC_CPU_BEHAV_L1D_FLUSH_PR		(1ULL << 62)
>  #define KVM_PPC_CPU_BEHAV_BNDS_CHK_SPEC_BAR	(1ULL << 61)
> +#define KVM_PPC_CPU_BEHAV_FLUSH_COUNT_CACHE	(1ull << 58)
>  
>  /* Per-vcpu XICS interrupt controller state */
>  #define KVM_REG_PPC_ICP_STATE	(KVM_REG_PPC | KVM_REG_SIZE_U64 | 0x8c)
> @@ -480,6 +482,8 @@ struct kvm_ppc_cpu_char {
>  #define  KVM_REG_PPC_ICP_PPRI_SHIFT	16	/* pending irq priority */
>  #define  KVM_REG_PPC_ICP_PPRI_MASK	0xff
>  
> +#define KVM_REG_PPC_VP_STATE	(KVM_REG_PPC | KVM_REG_SIZE_U128 | 0x8d)
> +
>  /* Device control API: PPC-specific devices */
>  #define KVM_DEV_MPIC_GRP_MISC		1
>  #define   KVM_DEV_MPIC_BASE_ADDR	0	/* 64-bit */
> @@ -675,4 +679,48 @@ struct kvm_ppc_cpu_char {
>  #define  KVM_XICS_PRESENTED		(1ULL << 43)
>  #define  KVM_XICS_QUEUED		(1ULL << 44)
>  
> +/* POWER9 XIVE Native Interrupt Controller */
> +#define KVM_DEV_XIVE_GRP_CTRL		1
> +#define   KVM_DEV_XIVE_RESET		1
> +#define   KVM_DEV_XIVE_EQ_SYNC		2
> +#define KVM_DEV_XIVE_GRP_SOURCE		2	/* 64-bit source identifier */
> +#define KVM_DEV_XIVE_GRP_SOURCE_CONFIG	3	/* 64-bit source identifier */
> +#define KVM_DEV_XIVE_GRP_EQ_CONFIG	4	/* 64-bit EQ identifier */
> +#define KVM_DEV_XIVE_GRP_SOURCE_SYNC	5       /* 64-bit source identifier */
> +
> +/* Layout of 64-bit XIVE source attribute values */
> +#define KVM_XIVE_LEVEL_SENSITIVE	(1ULL << 0)
> +#define KVM_XIVE_LEVEL_ASSERTED		(1ULL << 1)
> +
> +/* Layout of 64-bit XIVE source configuration attribute values */
> +#define KVM_XIVE_SOURCE_PRIORITY_SHIFT	0
> +#define KVM_XIVE_SOURCE_PRIORITY_MASK	0x7
> +#define KVM_XIVE_SOURCE_SERVER_SHIFT	3
> +#define KVM_XIVE_SOURCE_SERVER_MASK	0xfffffff8ULL
> +#define KVM_XIVE_SOURCE_MASKED_SHIFT	32
> +#define KVM_XIVE_SOURCE_MASKED_MASK	0x100000000ULL
> +#define KVM_XIVE_SOURCE_EISN_SHIFT	33
> +#define KVM_XIVE_SOURCE_EISN_MASK	0xfffffffe00000000ULL
> +
> +/* Layout of 64-bit EQ identifier */
> +#define KVM_XIVE_EQ_PRIORITY_SHIFT	0
> +#define KVM_XIVE_EQ_PRIORITY_MASK	0x7
> +#define KVM_XIVE_EQ_SERVER_SHIFT	3
> +#define KVM_XIVE_EQ_SERVER_MASK		0xfffffff8ULL
> +
> +/* Layout of EQ configuration values (64 bytes) */
> +struct kvm_ppc_xive_eq {
> +	__u32 flags;
> +	__u32 qshift;
> +	__u64 qaddr;
> +	__u32 qtoggle;
> +	__u32 qindex;
> +	__u8  pad[40];
> +};
> +
> +#define KVM_XIVE_EQ_ALWAYS_NOTIFY	0x00000001
> +
> +#define KVM_XIVE_TIMA_PAGE_OFFSET	0
> +#define KVM_XIVE_ESB_PAGE_OFFSET	4
> +
>  #endif /* __LINUX_KVM_POWERPC_H */
> diff --git a/x86/include/asm/kvm.h b/x86/include/asm/kvm.h
> index dabfcf7..7a0e64c 100644
> --- a/x86/include/asm/kvm.h
> +++ b/x86/include/asm/kvm.h
> @@ -381,6 +381,7 @@ struct kvm_sync_regs {
>  #define KVM_X86_QUIRK_LINT0_REENABLED	(1 << 0)
>  #define KVM_X86_QUIRK_CD_NW_CLEARED	(1 << 1)
>  #define KVM_X86_QUIRK_LAPIC_MMIO_HOLE	(1 << 2)
> +#define KVM_X86_QUIRK_OUT_7E_INC_RIP	(1 << 3)
>  
>  #define KVM_STATE_NESTED_GUEST_MODE	0x00000001
>  #define KVM_STATE_NESTED_RUN_PENDING	0x00000002

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