linux-kernel - [PATCH v2 0/2] Improvements to virtio

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Message-ID: <20240321012445.1593685-1-stevensd@google.com>
Date: Thu, 21 Mar 2024 10:24:43 +0900
From: David Stevens <stevensd@...omium.org>
To: "Michael S . Tsirkin" <mst@...hat.com>,
	David Hildenbrand <david@...hat.com>
Cc: virtualization@...ts.linux-foundation.org,
	linux-kernel@...r.kernel.org,
	David Stevens <stevensd@...omium.org>
Subject: [PATCH v2 0/2] Improvements to virtio_balloon pm

From: David Stevens <stevensd@...omium.org>

The virtio_balloon driver uses wakeup sources to allow the guest to
enter system power management sleep states (e.g. s2idle) without running
the risk of becoming unresponsive to cooperative memory management
requests from the host. This series fixes an issue where wakeup sources
for inflate/deflate were improperly shared between drivers. It also
closes a race where stats requests that come in immediately before a
sleep state transition could fail to be handled in a timely manner.

v1: https://lore.kernel.org/lkml/20240318091034.535573-1-stevensd@google.com/

v1 -> v2:
 - Add comment about virtio-balloon's wakeup source
 - Rename virtio-balloon wakeup event macros

David Stevens (2):
  virtio_balloon: Give the balloon its own wakeup source
  virtio_balloon: Treat stats requests as wakeup events

 drivers/virtio/virtio_balloon.c | 84 +++++++++++++++++++++------------
 1 file changed, 55 insertions(+), 29 deletions(-)

base-commit: e8f897f4afef0031fe618a8e94127a0934896aba
-- 
2.44.0.291.gc1ea87d7ee-goog