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RISC-V: KVM: Add hideleg to struct kvm_vcpu_config 

The hideleg CSR state when VCPU is running in guest VS/VU-mode will
be different from when it is running in guest HS-mode. To achieve
this, add hideleg to struct kvm_vcpu_config and re-program hideleg
CSR upon every kvm_arch_vcpu_load().

Signed-off-by: Anup Patel <anup.patel@oss.qualcomm.com>
Reviewed-by: Radim Krčmář <radim.krcmar@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260120080013.2153519-8-anup.patel@oss.qualcomm.com
Signed-off-by: Anup Patel <anup@brainfault.org>
master
Anup Patel 2026-01-20 13:29:53 +05:30 committed by Anup Patel
parent b1834e5afb
commit 0ee5501441
2 changed files with 4 additions and 0 deletions
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1
arch/riscv/include/asm/kvm_host.h
View File

@ -171,6 +171,7 @@ struct kvm_vcpu_config {
u64 henvcfg;
u64 hstateen0;
unsigned long hedeleg;
unsigned long hideleg;
};
struct kvm_vcpu_smstateen_csr {

3
arch/riscv/kvm/vcpu.c
View File

@ -136,6 +136,7 @@ int kvm_arch_vcpu_create(struct kvm_vcpu *vcpu)
vcpu->arch.ran_atleast_once = false;
vcpu->arch.cfg.hedeleg = KVM_HEDELEG_DEFAULT;
vcpu->arch.cfg.hideleg = KVM_HIDELEG_DEFAULT;
vcpu->arch.mmu_page_cache.gfp_zero = __GFP_ZERO;
bitmap_zero(vcpu->arch.isa, RISCV_ISA_EXT_MAX);
@ -610,6 +611,7 @@ void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
nacl_csr_write(nsh, CSR_VSCAUSE, csr->vscause);
nacl_csr_write(nsh, CSR_VSTVAL, csr->vstval);
nacl_csr_write(nsh, CSR_HEDELEG, cfg->hedeleg);
nacl_csr_write(nsh, CSR_HIDELEG, cfg->hideleg);
nacl_csr_write(nsh, CSR_HVIP, csr->hvip);
nacl_csr_write(nsh, CSR_VSATP, csr->vsatp);
nacl_csr_write(nsh, CSR_HENVCFG, cfg->henvcfg);
@ -629,6 +631,7 @@ void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
csr_write(CSR_VSCAUSE, csr->vscause);
csr_write(CSR_VSTVAL, csr->vstval);
csr_write(CSR_HEDELEG, cfg->hedeleg);
csr_write(CSR_HIDELEG, cfg->hideleg);
csr_write(CSR_HVIP, csr->hvip);
csr_write(CSR_VSATP, csr->vsatp);
csr_write(CSR_HENVCFG, cfg->henvcfg);