From: Deepak Gupta <debug@rivosinc.com>
To: Max Hsu <max.hsu@sifive.com>
Cc: Conor Dooley <conor@kernel.org>, Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Paul Walmsley <paul.walmsley@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>,
Anup Patel <anup@brainfault.org>,
Atish Patra <atishp@atishpatra.org>,
Palmer Dabbelt <palmer@sifive.com>,
linux-riscv@lists.infradead.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
kvm-riscv@lists.infradead.org,
Samuel Holland <samuel.holland@sifive.com>
Subject: Re: [PATCH RFC 2/3] riscv: Add Svukte extension support
Date: Tue, 29 Oct 2024 12:29:46 -0700 [thread overview]
Message-ID: <ZyE3qjpOXJYPRVlX@debug.ba.rivosinc.com> (raw)
In-Reply-To: <20240920-dev-maxh-svukte-rebase-v1-2-7864a88a62bd@sifive.com>
On Fri, Sep 20, 2024 at 03:39:04PM +0800, Max Hsu wrote:
>Svukte extension introduce senvcfg.UKTE, hstatus.HUKTE.
>
>This patch add CSR bit definition, and detects if Svukte ISA extension
>is available, cpufeature will set the correspond bit field so the
>svukte-qualified memory accesses are protected in a manner that is
>timing-independent of the faulting virtual address.
>
>Since hstatus.HU is not enabled by linux, enabling hstatus.HUKTE will
>not be affective.
>
>This patch depends on patch "riscv: Per-thread envcfg CSR support" [1]
>
>Link: https://lore.kernel.org/linux-riscv/20240814081126.956287-1-samuel.holland@sifive.com/ [1]
>
>Reviewed-by: Samuel Holland <samuel.holland@sifive.com>
>Signed-off-by: Max Hsu <max.hsu@sifive.com>
>---
> arch/riscv/include/asm/csr.h | 2 ++
> arch/riscv/include/asm/hwcap.h | 1 +
> arch/riscv/kernel/cpufeature.c | 4 ++++
> 3 files changed, 7 insertions(+)
Reviewed-by: Deepak Gupta <debug@rivosinc.com>
next prev parent reply other threads:[~2024-10-29 19:29 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-09-20 7:39 [PATCH RFC 0/3] riscv: add Svukte extension Max Hsu
2024-09-20 7:39 ` [PATCH RFC 1/3] dt-bindings: riscv: Add Svukte entry Max Hsu
2024-09-21 22:05 ` Conor Dooley
2024-09-27 9:23 ` Max Hsu
2024-10-29 19:30 ` Deepak Gupta
2024-11-13 16:15 ` Alexandre Ghiti
2024-11-20 13:55 ` Max Hsu
2024-09-20 7:39 ` [PATCH RFC 2/3] riscv: Add Svukte extension support Max Hsu
2024-10-29 19:29 ` Deepak Gupta [this message]
2024-09-20 7:39 ` [PATCH RFC 3/3] riscv: KVM: Add Svukte extension support for Guest/VM Max Hsu
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