Message ID | 20230419221716.3603068-5-atishp@rivosinc.com (mailing list archive) |
---|---|
State | New |
Headers | show
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Wed, 19 Apr 2023 15:17:38 -0700 (PDT) Received: from atishp.ba.rivosinc.com ([66.220.2.162]) by smtp.gmail.com with ESMTPSA id jn11-20020a170903050b00b00196807b5189sm11619190plb.292.2023.04.19.15.17.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 19 Apr 2023 15:17:38 -0700 (PDT) From: Atish Patra <atishp@rivosinc.com> To: linux-kernel@vger.kernel.org Cc: Atish Patra <atishp@rivosinc.com>, Alexandre Ghiti <alex@ghiti.fr>, Andrew Jones <ajones@ventanamicro.com>, Andrew Morton <akpm@linux-foundation.org>, Anup Patel <anup@brainfault.org>, Atish Patra <atishp@atishpatra.org>, =?utf-8?b?QmrDtnJuIFTDtnBlbA==?= <bjorn@rivosinc.com>, Suzuki K Poulose <suzuki.poulose@arm.com>, Will Deacon <will@kernel.org>, Marc Zyngier <maz@kernel.org>, Sean Christopherson <seanjc@google.com>, linux-coco@lists.linux.dev, Dylan Reid <dylan@rivosinc.com>, abrestic@rivosinc.com, Samuel Ortiz <sameo@rivosinc.com>, Christoph Hellwig <hch@infradead.org>, Conor Dooley <conor.dooley@microchip.com>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Guo Ren <guoren@kernel.org>, Heiko Stuebner <heiko@sntech.de>, Jiri Slaby <jirislaby@kernel.org>, kvm-riscv@lists.infradead.org, kvm@vger.kernel.org, linux-mm@kvack.org, linux-riscv@lists.infradead.org, Mayuresh Chitale <mchitale@ventanamicro.com>, Palmer Dabbelt <palmer@dabbelt.com>, Paolo Bonzini <pbonzini@redhat.com>, Paul Walmsley <paul.walmsley@sifive.com>, Rajnesh Kanwal <rkanwal@rivosinc.com>, Uladzislau Rezki <urezki@gmail.com> Subject: [RFC 04/48] RISC-V: KVM: Add a helper function to get pgd size Date: Wed, 19 Apr 2023 15:16:32 -0700 Message-Id: <20230419221716.3603068-5-atishp@rivosinc.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230419221716.3603068-1-atishp@rivosinc.com> References: <20230419221716.3603068-1-atishp@rivosinc.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 76793100010 X-Stat-Signature: erqudusw1wft59e45iy4waigrqzyysza X-HE-Tag: 1681942659-998893 X-HE-Meta: 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 LIDFZvM0 f0j5IeTElfH0WCAGyYuqgUYgiI2sfmBAJjRTuFcR+iT/ql3kliEr8jcdlsvsJ/ItG2Z2iyVUjOFf7SCe+UCzACwyjDOMpVdbK+BX6DZOnXWZifSvwRR1ZL3PxF8r5TI+s1eoKXmkQpCbBxNBrMPhgrETiQUMeTRjk4ijr7ITu9eDzH5LECslj/pjEL+YvgY204YsVAL302iqG6jyxZGXmCRSTVjSgduufnE8ccYgKplGodaLwqPNOvAC5uCv/O9OTULLgYT9E+3+Avu4DNA4difjLsFt5fHtsf+TkxCbHsBnUntrvwpdeZC+wu9oxznVhWSVwDS6CiZS/W/wIRSzYEWDGbAud0p6a5nNAJo/irat+JQKHjUCHjZzCUyNErUioiR93I46D/BFjDIOPwycB1wsof1rQsIaz8vqi3Gn/jJtdsNcoHK+IspnGZbFPZYXL4y2dXsi1VIZtFT2fFnSWdiz39w== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: <linux-mm.kvack.org> |
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RISC-V CoVE support
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expand
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diff --git a/arch/riscv/include/asm/kvm_host.h b/arch/riscv/include/asm/kvm_host.h index 8714325..63c46af 100644 --- a/arch/riscv/include/asm/kvm_host.h +++ b/arch/riscv/include/asm/kvm_host.h @@ -313,6 +313,7 @@ void kvm_riscv_gstage_update_hgatp(struct kvm_vcpu *vcpu); void __init kvm_riscv_gstage_mode_detect(void); unsigned long __init kvm_riscv_gstage_mode(void); int kvm_riscv_gstage_gpa_bits(void); +unsigned long kvm_riscv_gstage_pgd_size(void); void __init kvm_riscv_gstage_vmid_detect(void); unsigned long kvm_riscv_gstage_vmid_bits(void); diff --git a/arch/riscv/kvm/mmu.c b/arch/riscv/kvm/mmu.c index f0fff56..6b037f7 100644 --- a/arch/riscv/kvm/mmu.c +++ b/arch/riscv/kvm/mmu.c @@ -797,3 +797,8 @@ int kvm_riscv_gstage_gpa_bits(void) { return gstage_gpa_bits; } + +unsigned long kvm_riscv_gstage_pgd_size(void) +{ + return gstage_pgd_size; +}
The cove support will require to find out the pgd size to be used for the gstage page table directory. Export the value via an additional helper. Signed-off-by: Atish Patra <atishp@rivosinc.com> --- arch/riscv/include/asm/kvm_host.h | 1 + arch/riscv/kvm/mmu.c | 5 +++++ 2 files changed, 6 insertions(+)