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RISC-V: KVM: Add separate source for forwarded SBI extensions

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Add a separate source vcpu_sbi_forward.c for SBI extensions
which are entirely forwarded to KVM user-space.

Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Link: https://lore.kernel.org/r/20251017155925.361560-3-apatel@ventanamicro.com
Signed-off-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Anup Patel
2025-10-17 21:29:23 +05:30
committed by Anup Patel
parent e2f3e2d37b
commit 12fd6c62e9
4 changed files with 28 additions and 19 deletions
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1
arch/riscv/kvm/Makefile
View File

@@ -27,6 +27,7 @@ kvm-y += vcpu_onereg.o
kvm-$(CONFIG_RISCV_PMU_SBI) += vcpu_pmu.o
kvm-y += vcpu_sbi.o
kvm-y += vcpu_sbi_base.o
kvm-y += vcpu_sbi_forward.o
kvm-y += vcpu_sbi_fwft.o
kvm-y += vcpu_sbi_hsm.o
kvm-$(CONFIG_RISCV_PMU_SBI) += vcpu_sbi_pmu.o

12
arch/riscv/kvm/vcpu_sbi_base.c
View File

@@ -70,15 +70,3 @@ const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_base = {
.extid_end = SBI_EXT_BASE,
.handler = kvm_sbi_ext_base_handler,
};
const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_experimental = {
.extid_start = SBI_EXT_EXPERIMENTAL_START,
.extid_end = SBI_EXT_EXPERIMENTAL_END,
.handler = kvm_riscv_vcpu_sbi_forward_handler,
};
const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_vendor = {
.extid_start = SBI_EXT_VENDOR_START,
.extid_end = SBI_EXT_VENDOR_END,
.handler = kvm_riscv_vcpu_sbi_forward_handler,
};

27
arch/riscv/kvm/vcpu_sbi_forward.c Normal file
View File

@@ -0,0 +1,27 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2025 Ventana Micro Systems Inc.
*/
#include <linux/kvm_host.h>
#include <asm/kvm_vcpu_sbi.h>
#include <asm/sbi.h>
const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_experimental = {
.extid_start = SBI_EXT_EXPERIMENTAL_START,
.extid_end = SBI_EXT_EXPERIMENTAL_END,
.handler = kvm_riscv_vcpu_sbi_forward_handler,
};
const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_vendor = {
.extid_start = SBI_EXT_VENDOR_START,
.extid_end = SBI_EXT_VENDOR_END,
.handler = kvm_riscv_vcpu_sbi_forward_handler,
};
const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_dbcn = {
.extid_start = SBI_EXT_DBCN,
.extid_end = SBI_EXT_DBCN,
.default_disabled = true,
.handler = kvm_riscv_vcpu_sbi_forward_handler,
};

7
arch/riscv/kvm/vcpu_sbi_replace.c
View File

@@ -185,10 +185,3 @@ const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_srst = {
.extid_end = SBI_EXT_SRST,
.handler = kvm_sbi_ext_srst_handler,
};
const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_dbcn = {
.extid_start = SBI_EXT_DBCN,
.extid_end = SBI_EXT_DBCN,
.default_disabled = true,
.handler = kvm_riscv_vcpu_sbi_forward_handler,
};