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hw/xen: Add "mode" parameter to xen-block devices

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Block devices don't work in PV Grub (0.9x) if there is no mode specified. It
complains: "Error ENOENT when reading the mode"

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Message-Id: <20250207143724.30792-2-dwmw2@infradead.org>
Signed-off-by: Anthony PERARD <anthony.perard@vates.tech>
This commit is contained in:
David Woodhouse 2025-02-07 14:37:24 +00:00 committed by Anthony PERARD
parent cfcacbab38
commit 4173b3d837
1 changed files with 2 additions and 0 deletions
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hw/block/xen-block.c
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@ -408,6 +408,8 @@ static void xen_block_realize(XenDevice *xendev, Error **errp)
} }
xen_device_backend_printf(xendev, "info", "%u", blockdev->info); xen_device_backend_printf(xendev, "info", "%u", blockdev->info);
xen_device_backend_printf(xendev, "mode",
(blockdev->info & VDISK_READONLY) ? "r" : "w");
xen_device_frontend_printf(xendev, "virtual-device", "%lu", xen_device_frontend_printf(xendev, "virtual-device", "%lu",
vdev->number); vdev->number);