From nobody Fri Apr 3 19:30:05 2026 Received: from mail-wm1-f74.google.com (mail-wm1-f74.google.com [209.85.128.74]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4923D3D648C for ; Thu, 2 Apr 2026 11:39:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.74 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775129989; cv=none; b=BlRuskq7GSpGGodx602XkiMgS4ltk33EGgCud8CuGLjIlyJHSV8tkg2MbJgAyuibuodM+ViS8eSCmPjuUH24KIyPs9u5fX8/pKXpUB72IExsguLZw7X6fQYegND3S57qG02HTWDmcGanhPBiQx9s6TnwwpOFAlujlZ6ynZhnfzk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775129989; c=relaxed/simple; bh=6maluQbsUWzZ5mlZvxVtXtA00QF9XR4UBIqhuL5K4+s=; h=Date:Mime-Version:Message-ID:Subject:From:To:Cc:Content-Type; b=X4O200/qgRvlf0T8hVxPgqL/uiclaurnhQMfK39JKmyMCn/sbxkwsmGI5gmlVnQzf3j0jK1niGPPEWv/G1ma4LMKFiA2xFIRmL+5BmlKcNi+zeO2rQlU0klhuUbZHvhSHQKsYMGWGbw2W7U1NHkLjCCk5avoJUNLwUMdQp4qFtg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--sebastianene.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=cAcyQ69A; arc=none smtp.client-ip=209.85.128.74 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--sebastianene.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="cAcyQ69A" Received: by mail-wm1-f74.google.com with SMTP id 5b1f17b1804b1-487219e0800so5099605e9.2 for ; Thu, 02 Apr 2026 04:39:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1775129982; x=1775734782; darn=vger.kernel.org; h=cc:to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=/wh742VMTWlWH+slgubSz+moLYFABAfaF0AWY39n6Iw=; b=cAcyQ69AUMEGApnErCf6PsbtHNlvS/SLZYRC9dOuN0BXKEF4SZLi2G9ybZ+C4vwwP5 hujkCYSQgq/f0eLqZXycG8bKf3E7oXFiEx46l9uXGRqn/HzHxo45j+A3Y7VcrQWaorBt 2LYbY+j4cr9U6txxjy1+E8H/Yvs3kpTop/zUgKDNDTz+465CuYKWF0P9hI/qO9LVp8+5 asglxB9/vDSLm6mdLOxaBgJ38FYzejEMHSr9rD/NwbOWmRtttoPm9mXz2wH6vZd0A2kY eMbJcnRHka0Attazphz8tDxFl1n2jSbR3uSFSemJkTt6RaG+YT3nAmvcH3k02EJAedfP En5Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1775129982; x=1775734782; h=cc:to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=/wh742VMTWlWH+slgubSz+moLYFABAfaF0AWY39n6Iw=; b=LkiBL5obOqDrGn4MK6NZYU666b9IEF2X/E5GmyKxVkPJE/lZHhLiRgXSfaHOdpRAb4 VDAQLQ3RdrdYSd7nDcj5ayAuo5v+FDJOFTtRFor/R0xosubSh23ePqsMUqUC20glR1DF 2r5wMcEB1NibhHARL2JFqsHsoLHsXgMrg3deTb7MXVjcmtGhdQrnBJ6tCKvUHOyvFzHY yerZKRPV04Z5VOPMKyqxFTp6JR3QHL8Omd1h/lWnAa0SPNiBawemjsyOxywqoO1q5q5C WHb/zECDzr5+tyLvIJHVh7lehiSIapAEG0gR+MMRRl3O1M8qx0ZRZQXamNKpHlsEFcEi mjEw== X-Forwarded-Encrypted: i=1; AJvYcCVvvLaJN/1rZ30aCkBYAaJtZo8tm8+ZKpKPk+MKYIEhzO4g1Uqy/NfKokhMkQNY4EI8EyzeJK+ituRGHZo=@vger.kernel.org X-Gm-Message-State: AOJu0YzHYBU5j0ZXyQxw1omkK3zG0tUVHLoXL3qMuIokd9CqaPvQDsXC BqBMYnme1ceiNCWQoVYWZzBca/Hed3BlcUuqdsRttxvOYMoLdH1cf0WczfI3lDVlSxCNd7A1ZHa /Dgb/CKUoSS9BYzKSvwnWlTbe0zwGjQ== X-Received: from wmbjg9.prod.google.com ([2002:a05:600c:a009:b0:488:823b:4cf3]) (user=sebastianene job=prod-delivery.src-stubby-dispatcher) by 2002:a05:600c:3516:b0:480:690e:f14a with SMTP id 5b1f17b1804b1-48883597ccdmr109213475e9.14.1775129981835; Thu, 02 Apr 2026 04:39:41 -0700 (PDT) Date: Thu, 2 Apr 2026 11:39:39 +0000 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 X-Mailer: git-send-email 2.53.0.1213.gd9a14994de-goog Message-ID: <20260402113939.930221-1-sebastianene@google.com> Subject: [PATCH v2] firmware: arm_ffa: Use the correct buffer size during RXTX_MAP From: Sebastian Ene To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, android-kvm@google.com Cc: sudeep.holla@kernel.org, Sebastian Ene Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Don't use the discovered buffer size from an FFA_FEATURES call directly since we can run on a system that has the PAGE_SIZE larger than the returned size which makes the alloc_pages_exact for the buffer to be rounded up. Fixes: 61824feae5c0 ("firmware: arm_ffa: Fetch the Rx/Tx buffer size using = ffa_features()") Signed-off-by: Sebastian Ene --- v1 -> v2: * use the correct macro PAGE_ALIGN when calculating the size of the buffer --- drivers/firmware/arm_ffa/driver.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/firmware/arm_ffa/driver.c b/drivers/firmware/arm_ffa/d= river.c index f2f94d4d533e..eb2782848283 100644 --- a/drivers/firmware/arm_ffa/driver.c +++ b/drivers/firmware/arm_ffa/driver.c @@ -2078,7 +2078,7 @@ static int __init ffa_init(void) =20 ret =3D ffa_rxtx_map(virt_to_phys(drv_info->tx_buffer), virt_to_phys(drv_info->rx_buffer), - rxtx_bufsz / FFA_PAGE_SIZE); + PAGE_ALIGN(rxtx_bufsz) / FFA_PAGE_SIZE); if (ret) { pr_err("failed to register FFA RxTx buffers\n"); goto free_pages; --=20 2.53.0.1213.gd9a14994de-goog