mirror of
https://github.com/projectacrn/acrn-hypervisor.git
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a5e46a70ff
This patch:
- abstracts the common logic from existing x86 implementation
- moves x86-specific logic to arch/x86/notify.c
A new common/notify.{c,h} is introduced to provide a common SMP call framework for
multi-arch support in ACRN.
arch-specific files such as arch/{x86,riscv}/notify.c is aim to provide the
corresponding implementations respectively.
The framework provides the following common APIs:
- init_smp_call(): initialize the SMP call support during pCPU initialization
- handle_smp_call(): execute the SMP call notification handler
- smp_call_function(): trigger the SMP call request to target pCPUs
Other SW modules should invoke these common APIs to perform arch-independent
SMP operations.
Two arch-specific hooks are abstracted:
- arch_smp_call_kick_pcpu():
- On x86, special handling is required when LAPIC is passthrough.
- On RISC-V, a plain IPI is sufficient to kick the target pCPU.
- arch_init_smp_call():
- On x86, CPU initialization reserves dedicated vectors and
registers callback handlers for purposes such as notifications
or posted interrupts.
- On RISC-V, no special handling is required at present; this
can be extended in the future if needed.
----------
Changelog:
* Merged the following two patches into one:
[RFC PATCH v2 4/7] hv: introduce common/smp.{c,h}
[RFC PATCH v2 5/7] hv: smpcall: x86: adapt to common SMP call
Tracked-On: #8786
Signed-off-by: Shiqing Gao <shiqing.gao@intel.com>
Acked-by: Wang, Yu1 <yu1.wang@intel.com>
88 lines
2.4 KiB
C
88 lines
2.4 KiB
C
/*
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* Copyright (C) 2018-2022 Intel Corporation.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef PER_CPU_H
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#define PER_CPU_H
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#include <types.h>
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#include <sbuf.h>
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#include <irq.h>
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#include <timer.h>
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#include <profiling.h>
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#include <logmsg.h>
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#include <schedule.h>
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#include <asm/page.h>
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#include <asm/gdt.h>
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#include <asm/security.h>
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#include <asm/vm_config.h>
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#include <common/notify.h>
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struct per_cpu_region {
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/* vmxon_region MUST be 4KB-aligned */
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uint8_t vmxon_region[PAGE_SIZE];
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void *vmcs_run;
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#ifdef HV_DEBUG
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struct shared_buf *sbuf[ACRN_SBUF_PER_PCPU_ID_MAX];
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char logbuf[LOG_MESSAGE_MAX_SIZE];
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uint32_t npk_log_ref;
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#endif
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uint64_t irq_count[NR_IRQS];
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uint64_t softirq_pending;
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uint64_t spurious;
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struct acrn_vcpu *ever_run_vcpu;
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#ifdef STACK_PROTECTOR
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struct stack_canary stk_canary;
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#endif
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struct per_cpu_timers cpu_timers;
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struct sched_control sched_ctl;
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struct sched_noop_control sched_noop_ctl;
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struct sched_iorr_control sched_iorr_ctl;
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struct sched_bvt_control sched_bvt_ctl;
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struct sched_prio_control sched_prio_ctl;
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struct thread_object idle;
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struct host_gdt gdt;
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struct tss_64 tss;
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enum pcpu_boot_state boot_state;
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uint64_t pcpu_flag;
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uint8_t mc_stack[CONFIG_STACK_SIZE] __aligned(16);
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uint8_t df_stack[CONFIG_STACK_SIZE] __aligned(16);
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uint8_t sf_stack[CONFIG_STACK_SIZE] __aligned(16);
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uint8_t stack[CONFIG_STACK_SIZE] __aligned(16);
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uint32_t lapic_id;
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uint32_t lapic_ldr;
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uint32_t softirq_servicing;
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uint32_t mode_to_kick_pcpu;
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uint32_t mode_to_idle;
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struct smp_call_info_data smp_call_info;
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struct list_head softirq_dev_entry_list;
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#ifdef PROFILING_ON
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struct profiling_info_wrapper profiling_info;
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#endif
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uint64_t shutdown_vm_bitmap;
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uint64_t tsc_suspend;
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struct acrn_vcpu *whose_iwkey;
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/*
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* We maintain a per-pCPU array of vCPUs. vCPUs of a VM won't
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* share same pCPU. So the maximum possible # of vCPUs that can
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* run on a pCPU is CONFIG_MAX_VM_NUM.
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* vcpu_array address must be aligned to 64-bit for atomic access
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* to avoid contention between offline_vcpu and posted interrupt handler
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*/
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struct acrn_vcpu *vcpu_array[CONFIG_MAX_VM_NUM] __aligned(8);
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} __aligned(PAGE_SIZE); /* per_cpu_region size aligned with PAGE_SIZE */
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extern struct per_cpu_region per_cpu_data[MAX_PCPU_NUM];
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/*
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* get percpu data for pcpu_id.
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*/
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#define per_cpu(name, pcpu_id) \
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(per_cpu_data[(pcpu_id)].name)
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/* get percpu data for current pcpu */
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#define get_cpu_var(name) per_cpu(name, get_pcpu_id())
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#endif
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