> The errors for the virtio devices are:
> > virtio_scsi virtio1: virtio: device uses modern interface but does not
> > have VIRTIO_F_VERSION_1
> > virtio_scsi: probe of virtio1 failed with error -22
> > virtio_net virtio2: virtio: device uses modern interface but does not have
> > VIRTIO_F_VERSION_1
> > virtio_net: probe of virtio2 failed with error -22
I guess something goes wrong with accessing the mmio pci bars.
Seems to be a linux kernel bug in 4.15, when installing the hwe
kernel (5.4) it works fine for me.
> In the kern.log, I didn't really see any interesting differences, except
> for the errors above. The addresses are different and there is now a
> 64-bit bridge window, but I guess that's expected.
>
> > + pci 0000:00:1e.0: bridge window [mem 0x700000000000-0x700fffffffff
> > 64bit pref]
Yes.
> Not sure if this is interesting either, but part of the diff between the
> lspci outputs (first with the call, second without the call):
>
> > ***************
> > *** 75,88 ****
> > 00:05.0 SCSI storage controller: Red Hat, Inc Virtio SCSI
> > Subsystem: Red Hat, Inc Virtio SCSI
> > Physical Slot: 5
> > ! Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
> > Stepping- SERR- FastB2B- DisINTx+
INTx enabled.
> > ! Capabilities: [98] MSI-X: Enable+ Count=7 Masked-
MSI-X enabled.
That probably comes from the driver exiting early (and not configuring
interrupts).
The patch below fixes it for me. Can you confirm this?
take care,
Gerd
>From 05fdf93b17decc42dde2ba89e935616eceb705c4 Mon Sep 17 00:00:00 2001
From: Gerd Hoffmann <kra...@redhat.com>
Date: Mon, 22 May 2023 13:04:35 +0200
Subject: [PATCH 1/1] [testing] older linux kernels seem to have problems with
phys-bits > 46
---
OvmfPkg/Library/PlatformInitLib/MemDetect.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/OvmfPkg/Library/PlatformInitLib/MemDetect.c
b/OvmfPkg/Library/PlatformInitLib/MemDetect.c
index acf90b4e93fd..0482d8906d5c 100644
--- a/OvmfPkg/Library/PlatformInitLib/MemDetect.c
+++ b/OvmfPkg/Library/PlatformInitLib/MemDetect.c
@@ -646,16 +646,19 @@ PlatformAddressWidthFromCpuid (
));
if (Valid) {
- if (PhysBits > 47) {
+ if (PhysBits > 46) {
/*
* Avoid 5-level paging altogether for now, which limits
* PhysBits to 48. Also avoid using address bit 48, due to sign
* extension we can't identity-map these addresses (and lots of
* places in edk2 assume we have everything identity-mapped).
* So the actual limit is 47.
+ *
+ * Also some older linux kernels apparently have problems handling
+ * phys-bits > 46 correctly, so use that as limit.
*/
- DEBUG ((DEBUG_INFO, "%a: limit PhysBits to 47 (avoid 5-level paging)\n",
__func__));
- PhysBits = 47;
+ DEBUG ((DEBUG_INFO, "%a: limit PhysBits to 46 (avoid 5-level paging)\n",
__func__));
+ PhysBits = 46;
}
if (!Page1GSupport && (PhysBits > 40)) {
--
2.40.1
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