diff options
| author | Atish Patra <atish.patra@wdc.com> | 2021-11-18 09:39:12 +0100 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2022-01-06 10:42:47 +0100 |
| commit | 3e1d86569c210ec64398091bd035e539f0e26e81 (patch) | |
| tree | 1ecb3115039784c60c92d0d9ea9194166b28af61 /arch/riscv/include/asm/sbi.h | |
| parent | RISC-V: KVM: Add v0.1 replacement SBI extensions defined in v0.2 (diff) | |
| download | linux-3e1d86569c210ec64398091bd035e539f0e26e81.tar.xz linux-3e1d86569c210ec64398091bd035e539f0e26e81.zip | |
RISC-V: KVM: Add SBI HSM extension in KVM
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>
Diffstat (limited to 'arch/riscv/include/asm/sbi.h')
| -rw-r--r-- | arch/riscv/include/asm/sbi.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/riscv/include/asm/sbi.h b/arch/riscv/include/asm/sbi.h index 9e4c79fd49d7..9c46dd3ff4a2 100644 --- a/arch/riscv/include/asm/sbi.h +++ b/arch/riscv/include/asm/sbi.h @@ -90,6 +90,7 @@ enum sbi_hsm_hart_status { #define SBI_ERR_INVALID_PARAM -3 #define SBI_ERR_DENIED -4 #define SBI_ERR_INVALID_ADDRESS -5 +#define SBI_ERR_ALREADY_AVAILABLE -6 extern unsigned long sbi_spec_version; struct sbiret { |