RISC-V: KVM: Add SBI HSM extension in KVM

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SBI HSM extension allows OS to start/stop harts any time. It also allows
ordered booting of harts instead of random booting.

Implement SBI HSM exntesion and designate the vcpu 0 as the boot vcpu id.
All other non-zero non-booting vcpus should be brought up by the OS
implementing HSM extension. If the guest OS doesn't implement HSM
extension, only single vcpu will be available to OS.

Signed-off-by: Atish Patra <atish.patra@wdc.com>
Signed-off-by: Atish Patra <atishp@rivosinc.com>
Signed-off-by: Anup Patel <anup.patel@wdc.com>

...

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Atish Patra 2021-11-18 00:39:12 -08:00 • committed by Anup Patel

parent 5f862df558

commit 3e1d86569c

5 changed files with 134 additions and 0 deletions

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1

arch/riscv/include/asm/sbi.h

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1

arch/riscv/kvm/Makefile

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23

arch/riscv/kvm/vcpu.c

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4

arch/riscv/kvm/vcpu_sbi.c

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105

arch/riscv/kvm/vcpu_sbi_hsm.c

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