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>
Improve SMP call to support ACRN shell to operate RTVM.
before, the RTVM CPU can't be kicked off by notification IPI,
so some shell commands can't support it, like rdmsr/wrmsr,
memory/registers dump. So INIT will be used for RTVM, which
LAPIC is pass-thru.
Tracked-On: #8207
Signed-off-by: Minggui Cao <minggui.cao@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
Modified the copyright year range in code, and corrected "int32_tel"
into "Intel" in two "hypervisor/include/debug/profiling.h" and
"hypervisor/include/debug/profiling_internal.h".
Tracked-On: #7559
Signed-off-by: Ziheng Li <ziheng.li@intel.com>
Many of the license and Intel copyright headers include the "All rights
reserved" string. It is not relevant in the context of the BSD-3-Clause
license that the code is released under. This patch removes those strings
throughout the code (hypervisor, devicemodel and misc).
Tracked-On: #7254
Signed-off-by: Geoffroy Van Cutsem <geoffroy.vancutsem@intel.com>
NMI is used to notify LAPIC-PT RTVM, to kick its CPU into hypervisor.
But NMI could be used by system devices, like PMU (Performance Monitor
Unit). So use INIT signal as the partition CPU notification function, to
replace injecting NMI.
Also remove unused NMI as notification related code.
Tracked-On: #6966
Acked-by: Anthony Xu <anthony.xu@intel.com>
Signed-off-by: Minggui Cao <minggui.cao@intel.com>
Instead of "#include <x86/foo.h>", use "#include <asm/foo.h>".
In other words, we are adopting the same practice in Linux kernel.
Tracked-On: #5920
Signed-off-by: Liang Yi <yi.liang@intel.com>
Reviewed-by: Jason Chen CJ <jason.cj.chen@intel.com>
