Commit 7050f1d7 authored by Anup Patel's avatar Anup Patel Committed by Anup Patel
Browse files

RISC-V: KVM: Add SBI MPXY extension support for Guest 



The SBI MPXY extension is a platform-level functionality so KVM only
needs to forward SBI MPXY calls to KVM user-space.

Signed-off-by: default avatarAnup Patel <apatel@ventanamicro.com>
Reviewed-by: default avatarAndrew Jones <ajones@ventanamicro.com>
Link: https://lore.kernel.org/r/20251017155925.361560-4-apatel@ventanamicro.com


Signed-off-by: default avatarAnup Patel <anup@brainfault.org>
parent 12fd6c62

arch/riscv/include/asm/kvm_vcpu_sbi.h

+1 −0
Original line number Diff line number Diff line
@@ -107,6 +107,7 @@ extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_dbcn; 
extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_susp;

extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_sta;

extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_fwft;

extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_mpxy;

extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_experimental;

extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_vendor;

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

+1 −0
Original line number Diff line number Diff line
@@ -211,6 +211,7 @@ enum KVM_RISCV_SBI_EXT_ID { 
	KVM_RISCV_SBI_EXT_STA,

	KVM_RISCV_SBI_EXT_SUSP,

	KVM_RISCV_SBI_EXT_FWFT,

	KVM_RISCV_SBI_EXT_MPXY,

	KVM_RISCV_SBI_EXT_MAX,

};

arch/riscv/kvm/vcpu_sbi.c

+4 −0
Original line number Diff line number Diff line
@@ -82,6 +82,10 @@ static const struct kvm_riscv_sbi_extension_entry sbi_ext[] = { 
		.ext_idx = KVM_RISCV_SBI_EXT_FWFT,

		.ext_ptr = &vcpu_sbi_ext_fwft,

	},

	{

		.ext_idx = KVM_RISCV_SBI_EXT_MPXY,

		.ext_ptr = &vcpu_sbi_ext_mpxy,

	},

	{

		.ext_idx = KVM_RISCV_SBI_EXT_EXPERIMENTAL,

		.ext_ptr = &vcpu_sbi_ext_experimental,

arch/riscv/kvm/vcpu_sbi_forward.c

+7 −0
Original line number Diff line number Diff line
@@ -25,3 +25,10 @@ const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_dbcn = { 
	.default_disabled = true,

	.handler = kvm_riscv_vcpu_sbi_forward_handler,

};



const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_mpxy = {

	.extid_start = SBI_EXT_MPXY,

	.extid_end = SBI_EXT_MPXY,

	.default_disabled = true,

	.handler = kvm_riscv_vcpu_sbi_forward_handler,

};