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[1/4] RISC-V: KVM: Allow Svvptc extension for Guest/VM

Message ID 35d9c91a69ebcb81b40dc4f7f51e290c3d94b2d9.1732762121.git.zhouquan@iscas.ac.cn (mailing list archive)
State New
Headers show
Series RISC-V: KVM: Allow Svvptc/Zabha/Ziccrse exts for guests | expand

Commit Message

Quan Zhou Nov. 28, 2024, 3:21 a.m. UTC 
From: Quan Zhou <zhouquan@iscas.ac.cn>

Extend the KVM ISA extension ONE_REG interface to allow KVM user space
to detect and enable Svvptc extension for Guest/VM.

Signed-off-by: Quan Zhou <zhouquan@iscas.ac.cn>
---
 arch/riscv/include/uapi/asm/kvm.h | 1 +
 arch/riscv/kvm/vcpu_onereg.c      | 2 ++
 2 files changed, 3 insertions(+)
diff mbox series

Patch

diff --git a/arch/riscv/include/uapi/asm/kvm.h b/arch/riscv/include/uapi/asm/kvm.h
index 4f24201376b1..9db33f52f56e 100644
--- a/arch/riscv/include/uapi/asm/kvm.h
+++ b/arch/riscv/include/uapi/asm/kvm.h
@@ -177,6 +177,7 @@  enum KVM_RISCV_ISA_EXT_ID {
 	KVM_RISCV_ISA_EXT_ZAWRS,
 	KVM_RISCV_ISA_EXT_SMNPM,
 	KVM_RISCV_ISA_EXT_SSNPM,
+	KVM_RISCV_ISA_EXT_SVVPTC,
 	KVM_RISCV_ISA_EXT_MAX,
 };
 
diff --git a/arch/riscv/kvm/vcpu_onereg.c b/arch/riscv/kvm/vcpu_onereg.c
index 5b68490ad9b7..67965feb5b74 100644
--- a/arch/riscv/kvm/vcpu_onereg.c
+++ b/arch/riscv/kvm/vcpu_onereg.c
@@ -41,6 +41,7 @@  static const unsigned long kvm_isa_ext_arr[] = {
 	KVM_ISA_EXT_ARR(SSNPM),
 	KVM_ISA_EXT_ARR(SSTC),
 	KVM_ISA_EXT_ARR(SVINVAL),
+	KVM_ISA_EXT_ARR(SVVPTC),
 	KVM_ISA_EXT_ARR(SVNAPOT),
 	KVM_ISA_EXT_ARR(SVPBMT),
 	KVM_ISA_EXT_ARR(ZACAS),
@@ -135,6 +136,7 @@  static bool kvm_riscv_vcpu_isa_disable_allowed(unsigned long ext)
 	case KVM_RISCV_ISA_EXT_SSNPM:
 	case KVM_RISCV_ISA_EXT_SSTC:
 	case KVM_RISCV_ISA_EXT_SVINVAL:
+	case KVM_RISCV_ISA_EXT_SVVPTC:
 	case KVM_RISCV_ISA_EXT_SVNAPOT:
 	case KVM_RISCV_ISA_EXT_ZACAS:
 	case KVM_RISCV_ISA_EXT_ZAWRS: