Commit afd1ef3a authored by Anup Patel's avatar Anup Patel Committed by Anup Patel
Browse files

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



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: default avatarAnup Patel <apatel@ventanamicro.com>
Reviewed-by: default avatarAndrew Jones <ajones@ventanamicro.com>
Signed-off-by: default avatarAnup Patel <anup@brainfault.org>
parent 14d70de5

arch/riscv/include/uapi/asm/kvm.h

+10 −0
Original line number Diff line number Diff line
@@ -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,

};

arch/riscv/kvm/vcpu_onereg.c

+20 −0
Original line number Diff line number Diff line
@@ -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: