[Qemu-devel] [PATCH 03/13] HACK: linux header update

[Andrew Jones <drjones@redhat.com>]

---
 linux-headers/asm-arm64/kvm.h         | 41 +++++++++++++++++++++
 linux-headers/asm-arm64/sve_context.h | 53 +++++++++++++++++++++++++++
 linux-headers/linux/kvm.h             |  5 +++
 3 files changed, 99 insertions(+)
 create mode 100644 linux-headers/asm-arm64/sve_context.h

diff --git a/linux-headers/asm-arm64/kvm.h b/linux-headers/asm-arm64/kvm.h
index e6a98c14c848..3e73a4c67b67 100644
--- a/linux-headers/asm-arm64/kvm.h
+++ b/linux-headers/asm-arm64/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 +103,7 @@ 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 */
 
 struct kvm_vcpu_init {
 	__u32 target;
@@ -226,6 +228,45 @@ 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/linux-headers/asm-arm64/sve_context.h b/linux-headers/asm-arm64/sve_context.h
new file mode 100644
index 000000000000..1d0e3e1d0950
--- /dev/null
+++ b/linux-headers/asm-arm64/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 __ASM_SVE_CONTEXT_H
+#define __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/linux-headers/linux/kvm.h b/linux-headers/linux/kvm.h
index b53ee5974802..1a639ae0ceed 100644
--- a/linux-headers/linux/kvm.h
+++ b/linux-headers/linux/kvm.h
@@ -988,6 +988,7 @@ struct kvm_ppc_resize_hpt {
 #define KVM_CAP_ARM_VM_IPA_SIZE 165
 #define KVM_CAP_MANUAL_DIRTY_LOG_PROTECT 166
 #define KVM_CAP_HYPERV_CPUID 167
+#define KVM_CAP_ARM_SVE 168
 
 #ifdef KVM_CAP_IRQ_ROUTING
 
@@ -1145,6 +1146,7 @@ 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 */
@@ -1440,6 +1442,9 @@ struct kvm_enc_region {
 /* 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 */
-- 
2.20.1