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KVM: RISC-V: remove unnecessary SBI reset state

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The SBI reset state has only two variables -- pc and a1.
The rest is known, so keep only the necessary information.

The reset structures make sense if we want userspace to control the
reset state (which we do), but I'd still remove them now and reintroduce
with the userspace interface later -- we could probably have just a
single reset state per VM, instead of a reset state for each VCPU.

Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Signed-off-by: Radim Krčmář <rkrcmar@ventanamicro.com>
Link: https://lore.kernel.org/r/20250403112522.1566629-6-rkrcmar@ventanamicro.com
Signed-off-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Radim Krčmář
2025-04-03 13:25:22 +02:00
committed by Anup Patel
parent a1c66842f1
commit 9f0e6b98c1
5 changed files with 46 additions and 45 deletions
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14
arch/riscv/include/asm/kvm_host.h
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@@ -193,6 +193,12 @@ struct kvm_vcpu_smstateen_csr {
unsigned long sstateen0;
};
struct kvm_vcpu_reset_state {
spinlock_t lock;
unsigned long pc;
unsigned long a1;
};
struct kvm_vcpu_arch {
/* VCPU ran at least once */
bool ran_atleast_once;
@@ -227,12 +233,8 @@ struct kvm_vcpu_arch {
/* CPU Smstateen CSR context of Guest VCPU */
struct kvm_vcpu_smstateen_csr smstateen_csr;
/* CPU context upon Guest VCPU reset */
struct kvm_cpu_context guest_reset_context;
spinlock_t reset_cntx_lock;
/* CPU CSR context upon Guest VCPU reset */
struct kvm_vcpu_csr guest_reset_csr;
/* CPU reset state of Guest VCPU */
struct kvm_vcpu_reset_state reset_state;
/*
* VCPU interrupts