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[80.230.48.7]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-48e6428f77csm9078155e9.0.2026.05.07.15.33.21 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 07 May 2026 15:33:22 -0700 (PDT) Date: Thu, 7 May 2026 18:33:19 -0400 From: "Michael S. Tsirkin" To: linux-kernel@vger.kernel.org Subject: Re: [PATCH v5 00/28] mm/virtio: skip redundant zeroing of host-zeroed pages Message-ID: <20260507183212-mutt-send-email-mst@kernel.org> References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Thu, May 07, 2026 at 06:22:28PM -0400, Michael S. Tsirkin wrote: > When a guest reports free pages to the hypervisor via virtio-balloon's > free page reporting, the host typically zeros those pages when reclaiming > their backing memory (e.g., via MADV_DONTNEED on anonymous mappings). > When the guest later reallocates those pages, the kernel zeros them > again, redundantly. i just noticed that i have accidentally moved reported to after inflate ( So there will be v6 but please do review.