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From 5bf64f8c7302964bd5fd208d9db9fa38ee96e0fa Mon Sep 17 00:00:00 2001
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From: Alex Williamson <alex.williamson@redhat.com>
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Date: Fri, 10 Apr 2015 16:33:39 +0200
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Subject: [PATCH 01/14] vfio: warn if host device rom can't be read
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Message-id: <20150410163339.15324.77513.stgit@gimli.home>
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Patchwork-id: 64789
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O-Subject: [RHEL7.2 qemu-kvm PATCH 1/8] vfio: warn if host device rom can't be read
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Bugzilla: 1210503
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RH-Acked-by: Thomas Huth <thuth@redhat.com>
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RH-Acked-by: Laszlo Ersek <lersek@redhat.com>
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RH-Acked-by: Bandan Das <bsd@redhat.com>
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From: Bandan Das <bsd@redhat.com>
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Upstream: d20b43dfea1587b561aae17e4fa0f7407779d253
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If the device rom can't be read, report an error to the
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user. This alerts the user that the device has a bad
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state that is causing rom read failure or option rom
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loading has been disabled from the device boot menu
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(among other reasons).
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Signed-off-by: Bandan Das <bsd@redhat.com>
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Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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hw/misc/vfio.c | 7 +++++++
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1 file changed, 7 insertions(+)
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diff --git a/hw/misc/vfio.c b/hw/misc/vfio.c
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index 40b0923..c9dbc28 100644
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--- a/hw/misc/vfio.c
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+++ b/hw/misc/vfio.c
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@@ -1197,6 +1197,13 @@ static void vfio_pci_load_rom(VFIODevice *vdev)
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vdev->rom_offset = reg_info.offset;
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if (!vdev->rom_size) {
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+ error_report("vfio-pci: Cannot read device rom at "
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+ "%04x:%02x:%02x.%x\n",
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+ vdev->host.domain, vdev->host.bus, vdev->host.slot,
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+ vdev->host.function);
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+ error_printf("Device option ROM contents are probably invalid "
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+ "(check dmesg).\nSkip option ROM probe with rombar=0, "
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+ "or load from file with romfile=\n");
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return;
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}
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--
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1.8.3.1
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