On Wed, Apr 20, 2022 at 4:25 AM Anup Patel <apatel@xxxxxxxxxxxxxxxx> wrote: > > Currently, the KVM_MAX_VCPUS value is 16384 for RV64 and 128 > for RV32. > > The KVM_MAX_VCPUS value is too high for RV64 and too low for > RV32 compared to other architectures (e.g. x86 sets it to 1024 > and ARM64 sets it to 512). The too high value of KVM_MAX_VCPUS > on RV64 also leads to VCPU mask on stack consuming 2KB. > > We set KVM_MAX_VCPUS to 1024 for both RV64 and RV32 to be > aligned other architectures. > > Signed-off-by: Anup Patel <apatel@xxxxxxxxxxxxxxxx> > --- > arch/riscv/include/asm/kvm_host.h | 3 +-- > 1 file changed, 1 insertion(+), 2 deletions(-) > > diff --git a/arch/riscv/include/asm/kvm_host.h b/arch/riscv/include/asm/kvm_host.h > index 806f74dc0bfc..61d8b40e3d82 100644 > --- a/arch/riscv/include/asm/kvm_host.h > +++ b/arch/riscv/include/asm/kvm_host.h > @@ -16,8 +16,7 @@ > #include <asm/kvm_vcpu_fp.h> > #include <asm/kvm_vcpu_timer.h> > > -#define KVM_MAX_VCPUS \ > - ((HGATP_VMID_MASK >> HGATP_VMID_SHIFT) + 1) > +#define KVM_MAX_VCPUS 1024 > > #define KVM_HALT_POLL_NS_DEFAULT 500000 > > -- > 2.25.1 > Reviewed-by: Atish Patra <atishp@xxxxxxxxxxxx> -- Regards, Atish
