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[174.165.208.10]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-8a2c89d2e2esm215026b3a.13.2026.10.22.20.05.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 22 Oct 2026 20:05:34 -0700 (PDT) From: Michael Kelley X-Google-Original-From: Michael Kelley To: haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, linux-kernel@vger.kernel.org, linux-hyperv@vger.kernel.org Subject: [PATCH 1/1] Drivers: hv: Remove leftover support for old Hyper-V versions Date: Thu, 22 Oct 2026 20:05:27 -0700 Message-Id: <20261023030527.1611-1-mhklinux@outlook.com> X-Mailer: git-send-email 2.25.1 Reply-To: mhklinux@outlook.com X-Mailing-List: linux-hyperv@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit When removing support for running Linux guests on Windows Server 2008/2008R2 and Windows 7, one area was missed due to the code comment spelling "2012" incorrectly. Remove that functionality now. Signed-off-by: Michael Kelley --- drivers/hv/ring_buffer.c | 8 -------- 1 file changed, 8 deletions(-) diff --git a/drivers/hv/ring_buffer.c b/drivers/hv/ring_buffer.c index 72f30ab23d1d..d8b085dfdb46 100644 --- a/drivers/hv/ring_buffer.c +++ b/drivers/hv/ring_buffer.c @@ -561,14 +561,6 @@ void hv_pkt_iter_close(struct vmbus_channel *channel) start_read_index = READ_ONCE(rbi->ring_buffer->read_index); WRITE_ONCE(rbi->ring_buffer->read_index, rbi->priv_read_index); - /* - * Older versions of Hyper-V (before WS2102 and Win8) do not - * implement pending_send_sz and simply poll if the host->guest - * ring buffer is full. No signaling is needed or expected. - */ - if (!rbi->ring_buffer->feature_bits.feat_pending_send_sz) - return; - /* * Issue a full memory barrier before making the signaling decision. * If reading pending_send_sz were to be reordered and happen -- 2.25.1