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Wed, 30 Apr 2025 20:04:29 -0700 (PDT) X-Google-Smtp-Source: AGHT+IHBHru6AxoF/0GFxqHSMv5iJLveZy61hLLoLevsQlDtlaYL5OE3bmqNgmfr/Tilhp0TcTxL9w== X-Received: by 2002:a17:902:ce92:b0:227:e6fe:2908 with SMTP id d9443c01a7336-22df5837638mr79119055ad.48.1746068668908; Wed, 30 Apr 2025 20:04:28 -0700 (PDT) Received: from [192.168.68.51] ([180.233.125.65]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-22db50e7a1dsm130579985ad.140.2025.04.30.20.04.21 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 30 Apr 2025 20:04:28 -0700 (PDT) Message-ID: Date: Thu, 1 May 2025 13:04:19 +1000 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v8 41/43] KVM: arm64: Expose support for private memory To: Steven Price , kvm@vger.kernel.org, kvmarm@lists.linux.dev Cc: Catalin Marinas , Marc Zyngier , Will Deacon , James Morse , Oliver Upton , Suzuki K Poulose , Zenghui Yu , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Joey Gouly , Alexandru Elisei , Christoffer Dall , Fuad Tabba , linux-coco@lists.linux.dev, Ganapatrao Kulkarni , Shanker Donthineni , Alper Gun , "Aneesh Kumar K . V" References: <20250416134208.383984-1-steven.price@arm.com> <20250416134208.383984-42-steven.price@arm.com> Content-Language: en-US From: Gavin Shan In-Reply-To: <20250416134208.383984-42-steven.price@arm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 4/16/25 11:42 PM, Steven Price wrote: > Select KVM_GENERIC_PRIVATE_MEM and provide the necessary support > functions. > > Signed-off-by: Steven Price > --- > Changes since v2: > * Switch kvm_arch_has_private_mem() to a macro to avoid overhead of a > function call. > * Guard definitions of kvm_arch_{pre,post}_set_memory_attributes() with > #ifdef CONFIG_KVM_GENERIC_MEMORY_ATTRIBUTES. > * Early out in kvm_arch_post_set_memory_attributes() if the WARN_ON > should trigger. > --- > arch/arm64/include/asm/kvm_host.h | 6 ++++++ > arch/arm64/kvm/Kconfig | 1 + > arch/arm64/kvm/mmu.c | 24 ++++++++++++++++++++++++ > 3 files changed, 31 insertions(+) > Reviewed-by: Gavin Shan