From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core: - Add dedicated kmem_cache for typical/small skb->head, avoid having to access struct page at kfree time, and improve memory use. - Introduce sysctl to set default RPS configuration for new netdevs. - Define Netlink protocol specification format which can be used to describe messages used by each family and auto-generate parsers. Add tools for generating kernel data structures and uAPI headers. - Expose all net/core sysctls inside netns. - Remove 4s sleep in netpoll if carrier is instantly detected on boot. - Add configurable limit of MDB entries per port, and port-vlan. - Continue populating drop reasons throughout the stack. - Retire a handful of legacy Qdiscs and classifiers. Protocols: - Support IPv4 big TCP (TSO frames larger than 64kB). - Add IP_LOCAL_PORT_RANGE socket option, to control local port range on socket by socket basis. - Track and report in procfs number of MPTCP sockets used. - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path manager. - IPv6: don't check net.ipv6.route.max_size and rely on garbage collection to free memory (similarly to IPv4). - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986). - ICMP: add per-rate limit counters. - Add support for user scanning requests in ieee802154. - Remove static WEP support. - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate reporting. - WiFi 7 EHT channel puncturing support (client & AP). BPF: - Add a rbtree data structure following the "next-gen data structure" precedent set by recently added linked list, that is, by using kfunc + kptr instead of adding a new BPF map type. - Expose XDP hints via kfuncs with initial support for RX hash and timestamp metadata. - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to better support decap on GRE tunnel devices not operating in collect metadata. - Improve x86 JIT's codegen for PROBE_MEM runtime error checks. - Remove the need for trace_printk_lock for bpf_trace_printk and bpf_trace_vprintk helpers. - Extend libbpf's bpf_tracing.h support for tracing arguments of kprobes/uprobes and syscall as a special case. - Significantly reduce the search time for module symbols by livepatch and BPF. - Enable cpumasks to be used as kptrs, which is useful for tracing programs tracking which tasks end up running on which CPUs in different time intervals. - Add support for BPF trampoline on s390x and riscv64. - Add capability to export the XDP features supported by the NIC. - Add __bpf_kfunc tag for marking kernel functions as kfuncs. - Add cgroup.memory=nobpf kernel parameter option to disable BPF memory accounting for container environments. Netfilter: - Remove the CLUSTERIP target. It has been marked as obsolete for years, and we still have WARN splats wrt races of the out-of-band /proc interface installed by this target. - Add 'destroy' commands to nf_tables. They are identical to the existing 'delete' commands, but do not return an error if the referenced object (set, chain, rule...) did not exist. Driver API: - Improve cpumask_local_spread() locality to help NICs set the right IRQ affinity on AMD platforms. - Separate C22 and C45 MDIO bus transactions more clearly. - Introduce new DCB table to control DSCP rewrite on egress. - Support configuration of Physical Layer Collision Avoidance (PLCA) Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of shared medium Ethernet. - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing preemption of low priority frames by high priority frames. - Add support for controlling MACSec offload using netlink SET. - Rework devlink instance refcounts to allow registration and de-registration under the instance lock. Split the code into multiple files, drop some of the unnecessarily granular locks and factor out common parts of netlink operation handling. - Add TX frame aggregation parameters (for USB drivers). - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning messages with notifications for debug. - Allow offloading of UDP NEW connections via act_ct. - Add support for per action HW stats in TC. - Support hardware miss to TC action (continue processing in SW from a specific point in the action chain). - Warn if old Wireless Extension user space interface is used with modern cfg80211/mac80211 drivers. Do not support Wireless Extensions for Wi-Fi 7 devices at all. Everyone should switch to using nl80211 interface instead. - Improve the CAN bit timing configuration. Use extack to return error messages directly to user space, update the SJW handling, including the definition of a new default value that will benefit CAN-FD controllers, by increasing their oscillator tolerance. New hardware / drivers: - Ethernet: - nVidia BlueField-3 support (control traffic driver) - Ethernet support for imx93 SoCs - Motorcomm yt8531 gigabit Ethernet PHY - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA) - Microchip LAN8841 PHY (incl. cable diagnostics and PTP) - Amlogic gxl MDIO mux - WiFi: - RealTek RTL8188EU (rtl8xxxu) - Qualcomm Wi-Fi 7 devices (ath12k) - CAN: - Renesas R-Car V4H Drivers: - Bluetooth: - Set Per Platform Antenna Gain (PPAG) for Intel controllers. - Ethernet NICs: - Intel (1G, igc): - support TSN / Qbv / packet scheduling features of i226 model - Intel (100G, ice): - use GNSS subsystem instead of TTY - multi-buffer XDP support - extend support for GPIO pins to E823 devices - nVidia/Mellanox: - update the shared buffer configuration on PFC commands - implement PTP adjphase function for HW offset control - TC support for Geneve and GRE with VF tunnel offload - more efficient crypto key management method - multi-port eswitch support - Netronome/Corigine: - add DCB IEEE support - support IPsec offloading for NFP3800 - Freescale/NXP (enetc): - support XDP_REDIRECT for XDP non-linear buffers - improve reconfig, avoid link flap and waiting for idle - support MAC Merge layer - Other NICs: - sfc/ef100: add basic devlink support for ef100 - ionic: rx_push mode operation (writing descriptors via MMIO) - bnxt: use the auxiliary bus abstraction for RDMA - r8169: disable ASPM and reset bus in case of tx timeout - cpsw: support QSGMII mode for J721e CPSW9G - cpts: support pulse-per-second output - ngbe: add an mdio bus driver - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing - r8152: handle devices with FW with NCM support - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation - virtio-net: support multi buffer XDP - virtio/vsock: replace virtio_vsock_pkt with sk_buff - tsnep: XDP support - Ethernet high-speed switches: - nVidia/Mellanox (mlxsw): - add support for latency TLV (in FW control messages) - Microchip (sparx5): - separate explicit and implicit traffic forwarding rules, make the implicit rules always active - add support for egress DSCP rewrite - IS0 VCAP support (Ingress Classification) - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS etc.) - ES2 VCAP support (Egress Access Control) - support for Per-Stream Filtering and Policing (802.1Q, 8.6.5.1) - Ethernet embedded switches: - Marvell (mv88e6xxx): - add MAB (port auth) offload support - enable PTP receive for mv88e6390 - NXP (ocelot): - support MAC Merge layer - support for the the vsc7512 internal copper phys - Microchip: - lan9303: convert to PHYLINK - lan966x: support TC flower filter statistics - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x - lan937x: support Credit Based Shaper configuration - ksz9477: support Energy Efficient Ethernet - other: - qca8k: convert to regmap read/write API, use bulk operations - rswitch: Improve TX timestamp accuracy - Intel WiFi (iwlwifi): - EHT (Wi-Fi 7) rate reporting - STEP equalizer support: transfer some STEP (connection to radio on platforms with integrated wifi) related parameters from the BIOS to the firmware. - Qualcomm 802.11ax WiFi (ath11k): - IPQ5018 support - Fine Timing Measurement (FTM) responder role support - channel 177 support - MediaTek WiFi (mt76): - per-PHY LED support - mt7996: EHT (Wi-Fi 7) support - Wireless Ethernet Dispatch (WED) reset support - switch to using page pool allocator - RealTek WiFi (rtw89): - support new version of Bluetooth co-existance - Mobile: - rmnet: support TX aggregation" * tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits) page_pool: add a comment explaining the fragment counter usage net: ethtool: fix __ethtool_dev_mm_supported() implementation ethtool: pse-pd: Fix double word in comments xsk: add linux/vmalloc.h to xsk.c sefltests: netdevsim: wait for devlink instance after netns removal selftest: fib_tests: Always cleanup before exit net/mlx5e: Align IPsec ASO result memory to be as required by hardware net/mlx5e: TC, Set CT miss to the specific ct action instance net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG net/mlx5: Refactor tc miss handling to a single function net/mlx5: Kconfig: Make tc offload depend on tc skb extension net/sched: flower: Support hardware miss to tc action net/sched: flower: Move filter handle initialization earlier net/sched: cls_api: Support hardware miss to tc action net/sched: Rename user cookie and act cookie sfc: fix builds without CONFIG_RTC_LIB sfc: clean up some inconsistent indentings net/mlx4_en: Introduce flexible array to silence overflow warning net: lan966x: Fix possible deadlock inside PTP net/ulp: Remove redundant ->clone() test in inet_clone_ulp(). ... --- arch/arm64/include/asm/kvm_asm.h | 350 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 350 insertions(+) create mode 100644 arch/arm64/include/asm/kvm_asm.h (limited to 'arch/arm64/include/asm/kvm_asm.h') diff --git a/arch/arm64/include/asm/kvm_asm.h b/arch/arm64/include/asm/kvm_asm.h new file mode 100644 index 000000000..43c3bc0f9 --- /dev/null +++ b/arch/arm64/include/asm/kvm_asm.h @@ -0,0 +1,350 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2012,2013 - ARM Ltd + * Author: Marc Zyngier + */ + +#ifndef __ARM_KVM_ASM_H__ +#define __ARM_KVM_ASM_H__ + +#include +#include +#include + +#define ARM_EXIT_WITH_SERROR_BIT 31 +#define ARM_EXCEPTION_CODE(x) ((x) & ~(1U << ARM_EXIT_WITH_SERROR_BIT)) +#define ARM_EXCEPTION_IS_TRAP(x) (ARM_EXCEPTION_CODE((x)) == ARM_EXCEPTION_TRAP) +#define ARM_SERROR_PENDING(x) !!((x) & (1U << ARM_EXIT_WITH_SERROR_BIT)) + +#define ARM_EXCEPTION_IRQ 0 +#define ARM_EXCEPTION_EL1_SERROR 1 +#define ARM_EXCEPTION_TRAP 2 +#define ARM_EXCEPTION_IL 3 +/* The hyp-stub will return this for any kvm_call_hyp() call */ +#define ARM_EXCEPTION_HYP_GONE HVC_STUB_ERR + +#define kvm_arm_exception_type \ + {ARM_EXCEPTION_IRQ, "IRQ" }, \ + {ARM_EXCEPTION_EL1_SERROR, "SERROR" }, \ + {ARM_EXCEPTION_TRAP, "TRAP" }, \ + {ARM_EXCEPTION_HYP_GONE, "HYP_GONE" } + +/* + * Size of the HYP vectors preamble. kvm_patch_vector_branch() generates code + * that jumps over this. + */ +#define KVM_VECTOR_PREAMBLE (2 * AARCH64_INSN_SIZE) + +#define KVM_HOST_SMCCC_ID(id) \ + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ + ARM_SMCCC_SMC_64, \ + ARM_SMCCC_OWNER_VENDOR_HYP, \ + (id)) + +#define KVM_HOST_SMCCC_FUNC(name) KVM_HOST_SMCCC_ID(__KVM_HOST_SMCCC_FUNC_##name) + +#define __KVM_HOST_SMCCC_FUNC___kvm_hyp_init 0 + +#ifndef __ASSEMBLY__ + +#include + +enum __kvm_host_smccc_func { + /* Hypercalls available only prior to pKVM finalisation */ + /* __KVM_HOST_SMCCC_FUNC___kvm_hyp_init */ + __KVM_HOST_SMCCC_FUNC___kvm_get_mdcr_el2 = __KVM_HOST_SMCCC_FUNC___kvm_hyp_init + 1, + __KVM_HOST_SMCCC_FUNC___pkvm_init, + __KVM_HOST_SMCCC_FUNC___pkvm_create_private_mapping, + __KVM_HOST_SMCCC_FUNC___pkvm_cpu_set_vector, + __KVM_HOST_SMCCC_FUNC___kvm_enable_ssbs, + __KVM_HOST_SMCCC_FUNC___vgic_v3_init_lrs, + __KVM_HOST_SMCCC_FUNC___vgic_v3_get_gic_config, + __KVM_HOST_SMCCC_FUNC___pkvm_prot_finalize, + + /* Hypercalls available after pKVM finalisation */ + __KVM_HOST_SMCCC_FUNC___pkvm_host_share_hyp, + __KVM_HOST_SMCCC_FUNC___pkvm_host_unshare_hyp, + __KVM_HOST_SMCCC_FUNC___kvm_adjust_pc, + __KVM_HOST_SMCCC_FUNC___kvm_vcpu_run, + __KVM_HOST_SMCCC_FUNC___kvm_flush_vm_context, + __KVM_HOST_SMCCC_FUNC___kvm_tlb_flush_vmid_ipa, + __KVM_HOST_SMCCC_FUNC___kvm_tlb_flush_vmid, + __KVM_HOST_SMCCC_FUNC___kvm_flush_cpu_context, + __KVM_HOST_SMCCC_FUNC___kvm_timer_set_cntvoff, + __KVM_HOST_SMCCC_FUNC___vgic_v3_read_vmcr, + __KVM_HOST_SMCCC_FUNC___vgic_v3_write_vmcr, + __KVM_HOST_SMCCC_FUNC___vgic_v3_save_aprs, + __KVM_HOST_SMCCC_FUNC___vgic_v3_restore_aprs, + __KVM_HOST_SMCCC_FUNC___pkvm_vcpu_init_traps, + __KVM_HOST_SMCCC_FUNC___pkvm_init_vm, + __KVM_HOST_SMCCC_FUNC___pkvm_init_vcpu, + __KVM_HOST_SMCCC_FUNC___pkvm_teardown_vm, +}; + +#define DECLARE_KVM_VHE_SYM(sym) extern char sym[] +#define DECLARE_KVM_NVHE_SYM(sym) extern char kvm_nvhe_sym(sym)[] + +/* + * Define a pair of symbols sharing the same name but one defined in + * VHE and the other in nVHE hyp implementations. + */ +#define DECLARE_KVM_HYP_SYM(sym) \ + DECLARE_KVM_VHE_SYM(sym); \ + DECLARE_KVM_NVHE_SYM(sym) + +#define DECLARE_KVM_VHE_PER_CPU(type, sym) \ + DECLARE_PER_CPU(type, sym) +#define DECLARE_KVM_NVHE_PER_CPU(type, sym) \ + DECLARE_PER_CPU(type, kvm_nvhe_sym(sym)) + +#define DECLARE_KVM_HYP_PER_CPU(type, sym) \ + DECLARE_KVM_VHE_PER_CPU(type, sym); \ + DECLARE_KVM_NVHE_PER_CPU(type, sym) + +/* + * Compute pointer to a symbol defined in nVHE percpu region. + * Returns NULL if percpu memory has not been allocated yet. + */ +#define this_cpu_ptr_nvhe_sym(sym) per_cpu_ptr_nvhe_sym(sym, smp_processor_id()) +#define per_cpu_ptr_nvhe_sym(sym, cpu) \ + ({ \ + unsigned long base, off; \ + base = kvm_nvhe_sym(kvm_arm_hyp_percpu_base)[cpu]; \ + off = (unsigned long)&CHOOSE_NVHE_SYM(sym) - \ + (unsigned long)&CHOOSE_NVHE_SYM(__per_cpu_start); \ + base ? (typeof(CHOOSE_NVHE_SYM(sym))*)(base + off) : NULL; \ + }) + +#if defined(__KVM_NVHE_HYPERVISOR__) + +#define CHOOSE_NVHE_SYM(sym) sym +#define CHOOSE_HYP_SYM(sym) CHOOSE_NVHE_SYM(sym) + +/* The nVHE hypervisor shouldn't even try to access VHE symbols */ +extern void *__nvhe_undefined_symbol; +#define CHOOSE_VHE_SYM(sym) __nvhe_undefined_symbol +#define this_cpu_ptr_hyp_sym(sym) (&__nvhe_undefined_symbol) +#define per_cpu_ptr_hyp_sym(sym, cpu) (&__nvhe_undefined_symbol) + +#elif defined(__KVM_VHE_HYPERVISOR__) + +#define CHOOSE_VHE_SYM(sym) sym +#define CHOOSE_HYP_SYM(sym) CHOOSE_VHE_SYM(sym) + +/* The VHE hypervisor shouldn't even try to access nVHE symbols */ +extern void *__vhe_undefined_symbol; +#define CHOOSE_NVHE_SYM(sym) __vhe_undefined_symbol +#define this_cpu_ptr_hyp_sym(sym) (&__vhe_undefined_symbol) +#define per_cpu_ptr_hyp_sym(sym, cpu) (&__vhe_undefined_symbol) + +#else + +/* + * BIG FAT WARNINGS: + * + * - Don't be tempted to change the following is_kernel_in_hyp_mode() + * to has_vhe(). has_vhe() is implemented as a *final* capability, + * while this is used early at boot time, when the capabilities are + * not final yet.... + * + * - Don't let the nVHE hypervisor have access to this, as it will + * pick the *wrong* symbol (yes, it runs at EL2...). + */ +#define CHOOSE_HYP_SYM(sym) (is_kernel_in_hyp_mode() \ + ? CHOOSE_VHE_SYM(sym) \ + : CHOOSE_NVHE_SYM(sym)) + +#define this_cpu_ptr_hyp_sym(sym) (is_kernel_in_hyp_mode() \ + ? this_cpu_ptr(&sym) \ + : this_cpu_ptr_nvhe_sym(sym)) + +#define per_cpu_ptr_hyp_sym(sym, cpu) (is_kernel_in_hyp_mode() \ + ? per_cpu_ptr(&sym, cpu) \ + : per_cpu_ptr_nvhe_sym(sym, cpu)) + +#define CHOOSE_VHE_SYM(sym) sym +#define CHOOSE_NVHE_SYM(sym) kvm_nvhe_sym(sym) + +#endif + +struct kvm_nvhe_init_params { + unsigned long mair_el2; + unsigned long tcr_el2; + unsigned long tpidr_el2; + unsigned long stack_hyp_va; + unsigned long stack_pa; + phys_addr_t pgd_pa; + unsigned long hcr_el2; + unsigned long vttbr; + unsigned long vtcr; +}; + +/* + * Used by the host in EL1 to dump the nVHE hypervisor backtrace on + * hyp_panic() in non-protected mode. + * + * @stack_base: hyp VA of the hyp_stack base. + * @overflow_stack_base: hyp VA of the hyp_overflow_stack base. + * @fp: hyp FP where the backtrace begins. + * @pc: hyp PC where the backtrace begins. + */ +struct kvm_nvhe_stacktrace_info { + unsigned long stack_base; + unsigned long overflow_stack_base; + unsigned long fp; + unsigned long pc; +}; + +/* Translate a kernel address @ptr into its equivalent linear mapping */ +#define kvm_ksym_ref(ptr) \ + ({ \ + void *val = (ptr); \ + if (!is_kernel_in_hyp_mode()) \ + val = lm_alias((ptr)); \ + val; \ + }) +#define kvm_ksym_ref_nvhe(sym) kvm_ksym_ref(kvm_nvhe_sym(sym)) + +struct kvm; +struct kvm_vcpu; +struct kvm_s2_mmu; + +DECLARE_KVM_NVHE_SYM(__kvm_hyp_init); +DECLARE_KVM_HYP_SYM(__kvm_hyp_vector); +#define __kvm_hyp_init CHOOSE_NVHE_SYM(__kvm_hyp_init) +#define __kvm_hyp_vector CHOOSE_HYP_SYM(__kvm_hyp_vector) + +extern unsigned long kvm_nvhe_sym(kvm_arm_hyp_percpu_base)[]; +DECLARE_KVM_NVHE_SYM(__per_cpu_start); +DECLARE_KVM_NVHE_SYM(__per_cpu_end); + +DECLARE_KVM_HYP_SYM(__bp_harden_hyp_vecs); +#define __bp_harden_hyp_vecs CHOOSE_HYP_SYM(__bp_harden_hyp_vecs) + +extern void __kvm_flush_vm_context(void); +extern void __kvm_flush_cpu_context(struct kvm_s2_mmu *mmu); +extern void __kvm_tlb_flush_vmid_ipa(struct kvm_s2_mmu *mmu, phys_addr_t ipa, + int level); +extern void __kvm_tlb_flush_vmid(struct kvm_s2_mmu *mmu); + +extern void __kvm_timer_set_cntvoff(u64 cntvoff); + +extern int __kvm_vcpu_run(struct kvm_vcpu *vcpu); + +extern void __kvm_adjust_pc(struct kvm_vcpu *vcpu); + +extern u64 __vgic_v3_get_gic_config(void); +extern u64 __vgic_v3_read_vmcr(void); +extern void __vgic_v3_write_vmcr(u32 vmcr); +extern void __vgic_v3_init_lrs(void); + +extern u64 __kvm_get_mdcr_el2(void); + +#define __KVM_EXTABLE(from, to) \ + " .pushsection __kvm_ex_table, \"a\"\n" \ + " .align 3\n" \ + " .long (" #from " - .), (" #to " - .)\n" \ + " .popsection\n" + + +#define __kvm_at(at_op, addr) \ +( { \ + int __kvm_at_err = 0; \ + u64 spsr, elr; \ + asm volatile( \ + " mrs %1, spsr_el2\n" \ + " mrs %2, elr_el2\n" \ + "1: at "at_op", %3\n" \ + " isb\n" \ + " b 9f\n" \ + "2: msr spsr_el2, %1\n" \ + " msr elr_el2, %2\n" \ + " mov %w0, %4\n" \ + "9:\n" \ + __KVM_EXTABLE(1b, 2b) \ + : "+r" (__kvm_at_err), "=&r" (spsr), "=&r" (elr) \ + : "r" (addr), "i" (-EFAULT)); \ + __kvm_at_err; \ +} ) + + +#else /* __ASSEMBLY__ */ + +.macro get_host_ctxt reg, tmp + adr_this_cpu \reg, kvm_host_data, \tmp + add \reg, \reg, #HOST_DATA_CONTEXT +.endm + +.macro get_vcpu_ptr vcpu, ctxt + get_host_ctxt \ctxt, \vcpu + ldr \vcpu, [\ctxt, #HOST_CONTEXT_VCPU] +.endm + +.macro get_loaded_vcpu vcpu, ctxt + adr_this_cpu \ctxt, kvm_hyp_ctxt, \vcpu + ldr \vcpu, [\ctxt, #HOST_CONTEXT_VCPU] +.endm + +.macro set_loaded_vcpu vcpu, ctxt, tmp + adr_this_cpu \ctxt, kvm_hyp_ctxt, \tmp + str \vcpu, [\ctxt, #HOST_CONTEXT_VCPU] +.endm + +/* + * KVM extable for unexpected exceptions. + * Create a struct kvm_exception_table_entry output to a section that can be + * mapped by EL2. The table is not sorted. + * + * The caller must ensure: + * x18 has the hypervisor value to allow any Shadow-Call-Stack instrumented + * code to write to it, and that SPSR_EL2 and ELR_EL2 are restored by the fixup. + */ +.macro _kvm_extable, from, to + .pushsection __kvm_ex_table, "a" + .align 3 + .long (\from - .), (\to - .) + .popsection +.endm + +#define CPU_XREG_OFFSET(x) (CPU_USER_PT_REGS + 8*x) +#define CPU_LR_OFFSET CPU_XREG_OFFSET(30) +#define CPU_SP_EL0_OFFSET (CPU_LR_OFFSET + 8) + +/* + * We treat x18 as callee-saved as the host may use it as a platform + * register (e.g. for shadow call stack). + */ +.macro save_callee_saved_regs ctxt + str x18, [\ctxt, #CPU_XREG_OFFSET(18)] + stp x19, x20, [\ctxt, #CPU_XREG_OFFSET(19)] + stp x21, x22, [\ctxt, #CPU_XREG_OFFSET(21)] + stp x23, x24, [\ctxt, #CPU_XREG_OFFSET(23)] + stp x25, x26, [\ctxt, #CPU_XREG_OFFSET(25)] + stp x27, x28, [\ctxt, #CPU_XREG_OFFSET(27)] + stp x29, lr, [\ctxt, #CPU_XREG_OFFSET(29)] +.endm + +.macro restore_callee_saved_regs ctxt + // We require \ctxt is not x18-x28 + ldr x18, [\ctxt, #CPU_XREG_OFFSET(18)] + ldp x19, x20, [\ctxt, #CPU_XREG_OFFSET(19)] + ldp x21, x22, [\ctxt, #CPU_XREG_OFFSET(21)] + ldp x23, x24, [\ctxt, #CPU_XREG_OFFSET(23)] + ldp x25, x26, [\ctxt, #CPU_XREG_OFFSET(25)] + ldp x27, x28, [\ctxt, #CPU_XREG_OFFSET(27)] + ldp x29, lr, [\ctxt, #CPU_XREG_OFFSET(29)] +.endm + +.macro save_sp_el0 ctxt, tmp + mrs \tmp, sp_el0 + str \tmp, [\ctxt, #CPU_SP_EL0_OFFSET] +.endm + +.macro restore_sp_el0 ctxt, tmp + ldr \tmp, [\ctxt, #CPU_SP_EL0_OFFSET] + msr sp_el0, \tmp +.endm + +#endif + +#endif /* __ARM_KVM_ASM_H__ */ -- cgit v1.2.3