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RISC-V: KVM: Allow vector crypto extensions for Guest/VM

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We extend the KVM ISA extension ONE_REG interface to allow KVM
user space to detect and enable vector crypto extensions for
Guest/VM. This includes extensions Zvbb, Zvbc, Zvkb, Zvkg,
Zvkned, Zvknha, Zvknhb, Zvksed, Zvksh, and Zvkt.

Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Signed-off-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Anup Patel 2023-11-27 21:38:43 +05:30 committed by Anup Patel
parent 14d70de562
commit afd1ef3adf
2 changed files with 30 additions and 0 deletions
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10
arch/riscv/include/uapi/asm/kvm.h
View File

@ -150,6 +150,16 @@ enum KVM_RISCV_ISA_EXT_ID {
KVM_RISCV_ISA_EXT_ZKSED,
KVM_RISCV_ISA_EXT_ZKSH,
KVM_RISCV_ISA_EXT_ZKT,
KVM_RISCV_ISA_EXT_ZVBB,
KVM_RISCV_ISA_EXT_ZVBC,
KVM_RISCV_ISA_EXT_ZVKB,
KVM_RISCV_ISA_EXT_ZVKG,
KVM_RISCV_ISA_EXT_ZVKNED,
KVM_RISCV_ISA_EXT_ZVKNHA,
KVM_RISCV_ISA_EXT_ZVKNHB,
KVM_RISCV_ISA_EXT_ZVKSED,
KVM_RISCV_ISA_EXT_ZVKSH,
KVM_RISCV_ISA_EXT_ZVKT,
KVM_RISCV_ISA_EXT_MAX,
};

20
arch/riscv/kvm/vcpu_onereg.c
View File

@ -62,6 +62,16 @@ static const unsigned long kvm_isa_ext_arr[] = {
KVM_ISA_EXT_ARR(ZKSED),
KVM_ISA_EXT_ARR(ZKSH),
KVM_ISA_EXT_ARR(ZKT),
KVM_ISA_EXT_ARR(ZVBB),
KVM_ISA_EXT_ARR(ZVBC),
KVM_ISA_EXT_ARR(ZVKB),
KVM_ISA_EXT_ARR(ZVKG),
KVM_ISA_EXT_ARR(ZVKNED),
KVM_ISA_EXT_ARR(ZVKNHA),
KVM_ISA_EXT_ARR(ZVKNHB),
KVM_ISA_EXT_ARR(ZVKSED),
KVM_ISA_EXT_ARR(ZVKSH),
KVM_ISA_EXT_ARR(ZVKT),
};
static unsigned long kvm_riscv_vcpu_base2isa_ext(unsigned long base_ext)
@ -121,6 +131,16 @@ static bool kvm_riscv_vcpu_isa_disable_allowed(unsigned long ext)
case KVM_RISCV_ISA_EXT_ZKSED:
case KVM_RISCV_ISA_EXT_ZKSH:
case KVM_RISCV_ISA_EXT_ZKT:
case KVM_RISCV_ISA_EXT_ZVBB:
case KVM_RISCV_ISA_EXT_ZVBC:
case KVM_RISCV_ISA_EXT_ZVKB:
case KVM_RISCV_ISA_EXT_ZVKG:
case KVM_RISCV_ISA_EXT_ZVKNED:
case KVM_RISCV_ISA_EXT_ZVKNHA:
case KVM_RISCV_ISA_EXT_ZVKNHB:
case KVM_RISCV_ISA_EXT_ZVKSED:
case KVM_RISCV_ISA_EXT_ZVKSH:
case KVM_RISCV_ISA_EXT_ZVKT:
return false;
/* Extensions which can be disabled using Smstateen */
case KVM_RISCV_ISA_EXT_SSAIA: