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RISC-V: KVM: Implement VCPU create, init and destroy functions

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This patch implements VCPU create, init and destroy functions
required by generic KVM module. We don't have much dynamic
resources in struct kvm_vcpu_arch so these functions are quite
simple for KVM RISC-V.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Alexander Graf <graf@amazon.com>
Acked-by: Palmer Dabbelt <palmerdabbelt@google.com>
This commit is contained in:
Anup Patel
2021-09-27 17:10:02 +05:30
committed by Anup Patel
parent 99cdc6c18c
commit a33c72faf2
2 changed files with 115 additions and 9 deletions
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69
arch/riscv/include/asm/kvm_host.h
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@@ -57,7 +57,76 @@ struct kvm_cpu_trap {
unsigned long htinst;
};
struct kvm_cpu_context {
unsigned long zero;
unsigned long ra;
unsigned long sp;
unsigned long gp;
unsigned long tp;
unsigned long t0;
unsigned long t1;
unsigned long t2;
unsigned long s0;
unsigned long s1;
unsigned long a0;
unsigned long a1;
unsigned long a2;
unsigned long a3;
unsigned long a4;
unsigned long a5;
unsigned long a6;
unsigned long a7;
unsigned long s2;
unsigned long s3;
unsigned long s4;
unsigned long s5;
unsigned long s6;
unsigned long s7;
unsigned long s8;
unsigned long s9;
unsigned long s10;
unsigned long s11;
unsigned long t3;
unsigned long t4;
unsigned long t5;
unsigned long t6;
unsigned long sepc;
unsigned long sstatus;
unsigned long hstatus;
};
struct kvm_vcpu_csr {
unsigned long vsstatus;
unsigned long vsie;
unsigned long vstvec;
unsigned long vsscratch;
unsigned long vsepc;
unsigned long vscause;
unsigned long vstval;
unsigned long hvip;
unsigned long vsatp;
unsigned long scounteren;
};
struct kvm_vcpu_arch {
/* VCPU ran at least once */
bool ran_atleast_once;
/* ISA feature bits (similar to MISA) */
unsigned long isa;
/* CPU context of Guest VCPU */
struct kvm_cpu_context guest_context;
/* CPU CSR context of Guest VCPU */
struct kvm_vcpu_csr guest_csr;
/* CPU context upon Guest VCPU reset */
struct kvm_cpu_context guest_reset_context;
/* CPU CSR context upon Guest VCPU reset */
struct kvm_vcpu_csr guest_reset_csr;
/* Don't run the VCPU (blocked) */
bool pause;