From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-yw1-f202.google.com (mail-yw1-f202.google.com [209.85.128.202]) (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 66BDE1459E0 for ; Thu, 13 Jun 2024 14:13:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.202 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718288022; cv=none; b=oRhdb/rzQ6zygHelS0mU06mp7ZOHiNsoUtmc5pEgRk+rDIHfo8iU5zYbnt0T7UdA2NpQmw8qnlkA8tLCCsX7jB+mo5uNSB10HaEHVomFSTpfLV4D4cyiY9JrZ2OX6kBVrivdDAeSNQFivUinAG5sz7d7if5Jpk4Ts50GcAX1PwM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718288022; c=relaxed/simple; bh=JvvA1Mb4xpPipo/GUaqPlHRKSMtpx0CMXy2lrxcdHoU=; h=Date:Mime-Version:Message-ID:Subject:From:To:Cc:Content-Type; b=kml6EtGbl44+C+neCk/QJ9E+RpE65y8BROl3xaNvJfG2JKqR3eTzTPwGa2bs335EJPuO7sHU7hgRWCPMn5kZ6NTf0Xb/Lrc3FpITfN1amawwZPwu7w/aIG0BVwcKJ30G1ImeWvxSf/7GoL7LAHPD4Z9h27PWSnBHhBOZGwBIe7o= 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=wzQ073VG; arc=none smtp.client-ip=209.85.128.202 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="wzQ073VG" Received: by mail-yw1-f202.google.com with SMTP id 00721157ae682-627f20cff42so17840837b3.0 for ; Thu, 13 Jun 2024 07:13:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1718288020; x=1718892820; darn=vger.kernel.org; h=cc:to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=WBr89me4XcHZr4o6WgJAT/45F34TEJBrDeja5kex7lo=; b=wzQ073VG7V8YiwoUnws+mzKLQhEb2Lvq/BfPVcTbsGld0ZBfcGAWzk9XHt88gIBtZD 5A9iCzH56jb6laJVQZkHHKBUk0zOzWRDaGfrzjPZfb/vnz7IxCZx2WaTRFzzR6FcPNH2 YlwSsS69/KB3cEjNma8p6oGaz/qEyrmXsMQvfS69jaM2goL2qu8laiO4z6r+kvnZLkN8 a7D3xWSnhe5N7XrEc7B3KFm/iPWp84htqwson/8j+Yrrz/NMTAUnUlTxlT7UtLtrKDR7 b0zwHa/k0gK+j3J+KO5QkpTJ7wdy2jYMcGKMGIEXpTo2qJoIaOTvpSU8njur/JXKHjvz nMWw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1718288020; x=1718892820; h=cc:to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=WBr89me4XcHZr4o6WgJAT/45F34TEJBrDeja5kex7lo=; b=RSW5BYgZqnAmfFn/OMz9n0FQGBJIZFDap8v6sjRWgaN2hKD9eJKsnyx4MYiTOEHB8V v6f2ONBYcILEherK8SNVwjUP3y7VOs/jx1cSM21PolBe2w61jnmTvLhdmqGhRIqxrEiX 0zG4iGezV5naOdsh4LmzspKSgo8+VeKbTbsaoAKBsfODzOEMEc+Q13ZPwVzHZ/wAcFhI ohDLHCUnqeT1QTYspu4www09mc7Gg9Fq8SNAOK2W4dEZLniXH3bw/AYNGQJYFKlrDisc kMZIoiJCA6fBhCOJINBQn60hcWeWkoPqPQ67FuFYQIdhuYQKZJno3X6+a7dd3qldsmVa NdXw== X-Forwarded-Encrypted: i=1; AJvYcCXc1GgvyeKvveISog/skl3O7UNvOnSYd7XNvkQX8hrg+abux8ro55hqdM5mznPM6CiNwDDPvTtRDQqmi+PpghApfIKofcTsx2kZog== X-Gm-Message-State: AOJu0YzeE2p19CVs9W65q8av9FF8SJZhpABnP579MAdBgYofOIS3xXLy IOLKOyT5nJWUMcAdAu+qXcOqD+2Uyoj1eR4KQF9sij3W2VgUnn3TlVdIXhx7MZ1ihrAmY7KJKc1 pDfSli4BwAOrYEEyLdRiyVcbQjQ== X-Google-Smtp-Source: AGHT+IEkC9/Y4iK9fxrgnym1aS48DHLsXlQbFUVLV6b0cV3XIfrOmU5z8nnkTtCP5gaXSFFSwCZZosDvxu3eAIH1WL8= X-Received: from sebkvm.c.googlers.com ([fda3:e722:ac3:cc00:28:9cb1:c0a8:cd5]) (user=sebastianene job=sendgmr) by 2002:a05:690c:a8d:b0:62d:fbf:920a with SMTP id 00721157ae682-62fbc2de630mr12401907b3.10.1718288020361; Thu, 13 Jun 2024 07:13:40 -0700 (PDT) Date: Thu, 13 Jun 2024 14:13:33 +0000 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 X-Mailer: git-send-email 2.45.2.505.gda0bf45e8d-goog Message-ID: <20240613141335.1134341-1-sebastianene@google.com> Subject: [PATCH v2 0/2] misc: vcpu_stall_detector: Add a PPI interrupt From: Sebastian Ene To: arnd@arndb.de, gregkh@linuxfoundation.org, will@kernel.org, maz@kernel.org, Rob Herring , Dragan Cvetic , Guenter Roeck Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, kernel-team@android.com, Sebastian Ene Content-Type: text/plain; charset="UTF-8" Hello, I respined the v2 version to address an issue previously found here: https://lore.kernel.org/all/202406132132.FBKSWFav-lkp@intel.com/ This is a small update of the previously introduced vcpu stall detector which adds an interrupt to the virtual device to notify the guest VM in case it stalls. This lets the guest VM to handle the reboot and to panic in case it expires. Changelog from v1: * 1/2 : collected the Ack from Conor Dooley, thank you Conor ! * 2/2 : applied the feedback received from Conor and used platform_get_irq_optional. Removed the error messages during probe Thanks, Sebastian Ene (2): dt-bindings: vcpu_stall_detector: Add a PPI interrupt to the virtual device misc: Register a PPI for the vcpu stall detection virtual device .../misc/qemu,vcpu-stall-detector.yaml | 6 ++++ drivers/misc/vcpu_stall_detector.c | 31 +++++++++++++++++-- 2 files changed, 35 insertions(+), 2 deletions(-) -- 2.45.2.505.gda0bf45e8d-goog