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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>
25 lines
501 B
C
25 lines
501 B
C
/*
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* Copyright (C) 2025 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 COMMON_NOTIFY_H
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#define COMMON_NOTIFY_H
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#include <types.h>
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typedef void (*smp_call_func_t)(void *data);
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struct smp_call_info_data {
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smp_call_func_t func;
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void *data;
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};
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void init_smp_call(void);
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void handle_smp_call(void);
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void smp_call_function(uint64_t mask, smp_call_func_t func, void *data);
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void kick_notification(__unused uint32_t irq, __unused void *data);
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#endif /* COMMON_NOTIFY_H */
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