* [PATCH] RISC-V: KVM: Allow Zbb extension for Guest/VM
@ 2023-04-01 11:27 Anup Patel
2023-04-03 4:24 ` Atish Patra
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: Anup Patel @ 2023-04-01 11:27 UTC (permalink / raw)
To: Paolo Bonzini, Atish Patra
Cc: Palmer Dabbelt, Paul Walmsley, Andrew Jones, Anup Patel, kvm,
kvm-riscv, linux-riscv, linux-kernel, Anup Patel
We extend the KVM ISA extension ONE_REG interface to allow KVM
user space to detect and enable Zbb extension for Guest/VM.
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
---
arch/riscv/include/uapi/asm/kvm.h | 1 +
arch/riscv/kvm/vcpu.c | 2 ++
2 files changed, 3 insertions(+)
diff --git a/arch/riscv/include/uapi/asm/kvm.h b/arch/riscv/include/uapi/asm/kvm.h
index d8ead5952ed9..47a7c3958229 100644
--- a/arch/riscv/include/uapi/asm/kvm.h
+++ b/arch/riscv/include/uapi/asm/kvm.h
@@ -106,6 +106,7 @@ enum KVM_RISCV_ISA_EXT_ID {
KVM_RISCV_ISA_EXT_SVINVAL,
KVM_RISCV_ISA_EXT_ZIHINTPAUSE,
KVM_RISCV_ISA_EXT_ZICBOM,
+ KVM_RISCV_ISA_EXT_ZBB,
KVM_RISCV_ISA_EXT_MAX,
};
diff --git a/arch/riscv/kvm/vcpu.c b/arch/riscv/kvm/vcpu.c
index 3112697cb12d..02b49cb94561 100644
--- a/arch/riscv/kvm/vcpu.c
+++ b/arch/riscv/kvm/vcpu.c
@@ -61,6 +61,7 @@ static const unsigned long kvm_isa_ext_arr[] = {
KVM_ISA_EXT_ARR(SSTC),
KVM_ISA_EXT_ARR(SVINVAL),
KVM_ISA_EXT_ARR(SVPBMT),
+ KVM_ISA_EXT_ARR(ZBB),
KVM_ISA_EXT_ARR(ZIHINTPAUSE),
KVM_ISA_EXT_ARR(ZICBOM),
};
@@ -99,6 +100,7 @@ static bool kvm_riscv_vcpu_isa_disable_allowed(unsigned long ext)
case KVM_RISCV_ISA_EXT_SSTC:
case KVM_RISCV_ISA_EXT_SVINVAL:
case KVM_RISCV_ISA_EXT_ZIHINTPAUSE:
+ case KVM_RISCV_ISA_EXT_ZBB:
return false;
default:
break;
--
2.34.1
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http://lists.infradead.org/mailman/listinfo/linux-riscv
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH] RISC-V: KVM: Allow Zbb extension for Guest/VM
2023-04-01 11:27 [PATCH] RISC-V: KVM: Allow Zbb extension for Guest/VM Anup Patel
@ 2023-04-03 4:24 ` Atish Patra
2023-04-03 8:44 ` Andrew Jones
2023-04-07 11:52 ` Anup Patel
2 siblings, 0 replies; 4+ messages in thread
From: Atish Patra @ 2023-04-03 4:24 UTC (permalink / raw)
To: Anup Patel
Cc: Paolo Bonzini, Palmer Dabbelt, Paul Walmsley, Andrew Jones,
Anup Patel, kvm, kvm-riscv, linux-riscv, linux-kernel
On Sat, Apr 1, 2023 at 4:57 PM Anup Patel <apatel@ventanamicro.com> wrote:
>
> We extend the KVM ISA extension ONE_REG interface to allow KVM
> user space to detect and enable Zbb extension for Guest/VM.
>
> Signed-off-by: Anup Patel <apatel@ventanamicro.com>
> ---
> arch/riscv/include/uapi/asm/kvm.h | 1 +
> arch/riscv/kvm/vcpu.c | 2 ++
> 2 files changed, 3 insertions(+)
>
> diff --git a/arch/riscv/include/uapi/asm/kvm.h b/arch/riscv/include/uapi/asm/kvm.h
> index d8ead5952ed9..47a7c3958229 100644
> --- a/arch/riscv/include/uapi/asm/kvm.h
> +++ b/arch/riscv/include/uapi/asm/kvm.h
> @@ -106,6 +106,7 @@ enum KVM_RISCV_ISA_EXT_ID {
> KVM_RISCV_ISA_EXT_SVINVAL,
> KVM_RISCV_ISA_EXT_ZIHINTPAUSE,
> KVM_RISCV_ISA_EXT_ZICBOM,
> + KVM_RISCV_ISA_EXT_ZBB,
> KVM_RISCV_ISA_EXT_MAX,
> };
>
> diff --git a/arch/riscv/kvm/vcpu.c b/arch/riscv/kvm/vcpu.c
> index 3112697cb12d..02b49cb94561 100644
> --- a/arch/riscv/kvm/vcpu.c
> +++ b/arch/riscv/kvm/vcpu.c
> @@ -61,6 +61,7 @@ static const unsigned long kvm_isa_ext_arr[] = {
> KVM_ISA_EXT_ARR(SSTC),
> KVM_ISA_EXT_ARR(SVINVAL),
> KVM_ISA_EXT_ARR(SVPBMT),
> + KVM_ISA_EXT_ARR(ZBB),
> KVM_ISA_EXT_ARR(ZIHINTPAUSE),
> KVM_ISA_EXT_ARR(ZICBOM),
> };
> @@ -99,6 +100,7 @@ static bool kvm_riscv_vcpu_isa_disable_allowed(unsigned long ext)
> case KVM_RISCV_ISA_EXT_SSTC:
> case KVM_RISCV_ISA_EXT_SVINVAL:
> case KVM_RISCV_ISA_EXT_ZIHINTPAUSE:
> + case KVM_RISCV_ISA_EXT_ZBB:
> return false;
> default:
> break;
> --
> 2.34.1
>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
--
Regards,
Atish
_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] RISC-V: KVM: Allow Zbb extension for Guest/VM
2023-04-01 11:27 [PATCH] RISC-V: KVM: Allow Zbb extension for Guest/VM Anup Patel
2023-04-03 4:24 ` Atish Patra
@ 2023-04-03 8:44 ` Andrew Jones
2023-04-07 11:52 ` Anup Patel
2 siblings, 0 replies; 4+ messages in thread
From: Andrew Jones @ 2023-04-03 8:44 UTC (permalink / raw)
To: Anup Patel
Cc: Paolo Bonzini, Atish Patra, Palmer Dabbelt, Paul Walmsley,
Anup Patel, kvm, kvm-riscv, linux-riscv, linux-kernel
On Sat, Apr 01, 2023 at 04:57:30PM +0530, Anup Patel wrote:
> We extend the KVM ISA extension ONE_REG interface to allow KVM
> user space to detect and enable Zbb extension for Guest/VM.
>
> Signed-off-by: Anup Patel <apatel@ventanamicro.com>
> ---
> arch/riscv/include/uapi/asm/kvm.h | 1 +
> arch/riscv/kvm/vcpu.c | 2 ++
> 2 files changed, 3 insertions(+)
>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] RISC-V: KVM: Allow Zbb extension for Guest/VM
2023-04-01 11:27 [PATCH] RISC-V: KVM: Allow Zbb extension for Guest/VM Anup Patel
2023-04-03 4:24 ` Atish Patra
2023-04-03 8:44 ` Andrew Jones
@ 2023-04-07 11:52 ` Anup Patel
2 siblings, 0 replies; 4+ messages in thread
From: Anup Patel @ 2023-04-07 11:52 UTC (permalink / raw)
To: Anup Patel
Cc: Paolo Bonzini, Atish Patra, Palmer Dabbelt, Paul Walmsley,
Andrew Jones, kvm, kvm-riscv, linux-riscv, linux-kernel
On Sat, Apr 1, 2023 at 4:57 PM Anup Patel <apatel@ventanamicro.com> wrote:
>
> We extend the KVM ISA extension ONE_REG interface to allow KVM
> user space to detect and enable Zbb extension for Guest/VM.
>
> Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Queued this patch for Linux-6.4
Thanks,
Anup
> ---
> arch/riscv/include/uapi/asm/kvm.h | 1 +
> arch/riscv/kvm/vcpu.c | 2 ++
> 2 files changed, 3 insertions(+)
>
> diff --git a/arch/riscv/include/uapi/asm/kvm.h b/arch/riscv/include/uapi/asm/kvm.h
> index d8ead5952ed9..47a7c3958229 100644
> --- a/arch/riscv/include/uapi/asm/kvm.h
> +++ b/arch/riscv/include/uapi/asm/kvm.h
> @@ -106,6 +106,7 @@ enum KVM_RISCV_ISA_EXT_ID {
> KVM_RISCV_ISA_EXT_SVINVAL,
> KVM_RISCV_ISA_EXT_ZIHINTPAUSE,
> KVM_RISCV_ISA_EXT_ZICBOM,
> + KVM_RISCV_ISA_EXT_ZBB,
> KVM_RISCV_ISA_EXT_MAX,
> };
>
> diff --git a/arch/riscv/kvm/vcpu.c b/arch/riscv/kvm/vcpu.c
> index 3112697cb12d..02b49cb94561 100644
> --- a/arch/riscv/kvm/vcpu.c
> +++ b/arch/riscv/kvm/vcpu.c
> @@ -61,6 +61,7 @@ static const unsigned long kvm_isa_ext_arr[] = {
> KVM_ISA_EXT_ARR(SSTC),
> KVM_ISA_EXT_ARR(SVINVAL),
> KVM_ISA_EXT_ARR(SVPBMT),
> + KVM_ISA_EXT_ARR(ZBB),
> KVM_ISA_EXT_ARR(ZIHINTPAUSE),
> KVM_ISA_EXT_ARR(ZICBOM),
> };
> @@ -99,6 +100,7 @@ static bool kvm_riscv_vcpu_isa_disable_allowed(unsigned long ext)
> case KVM_RISCV_ISA_EXT_SSTC:
> case KVM_RISCV_ISA_EXT_SVINVAL:
> case KVM_RISCV_ISA_EXT_ZIHINTPAUSE:
> + case KVM_RISCV_ISA_EXT_ZBB:
> return false;
> default:
> break;
> --
> 2.34.1
>
_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv
^ permalink raw reply [flat|nested] 4+ messages in thread
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2023-04-01 11:27 [PATCH] RISC-V: KVM: Allow Zbb extension for Guest/VM Anup Patel
2023-04-03 4:24 ` Atish Patra
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2023-04-07 11:52 ` Anup Patel
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