meta-virtualization/classes
Michal Orzel 17f3d28228 Revert "xen: Disable PCI on qemuarm with Xen"
This reverts commit fb0a7b97db.

Justification:
Commit fb0a7b97db removed the PCI node from the qemu device tree
due to the issue when trying to access PCI configuration space that
was causing Linux running on top of Xen to end up in an infinite loop.
The investigation showed that the problem occurs due to qemu placing
ECAM space at 256GiB mark. Even though Xen officially supports on arm32
up to 12GiB of physical address space, it is able to map it correctly
for dom0. However, when Linux tries to access the ECAM space and the
stage2 translation fault occurs, HPFAR register contains incorrect IPA.
We can say it is incorrect because using hardware AT instruction or
software lookup, we can obtain the correct IPA from the same VA. This
can suggest that the problem is related to QEMU fault handling.

Instead of removing the PCI node the follow-up commit will disable
highmem option in qemu which will cause placing ECAM space in the
32-bit space.

Signed-off-by: Michal Orzel <michal.orzel@arm.com>
Reviewed-by: Bertrand Marquis <bertrand.marquis@arm.com>
Reviewed-by: Christopher Clark <christopher.w.clark@gmail.com>
Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
2022-06-20 12:07:45 -04:00
..
cni_networking.bbclass global: overrides syntax conversion 2021-08-02 17:17:53 -04:00
image-oci-sloci-image.inc global: overrides syntax conversion 2021-08-02 17:17:53 -04:00
image-oci-umoci.inc global: overrides syntax conversion 2021-08-02 17:17:53 -04:00
image-oci.bbclass image-oci: use new override syntax 2021-08-06 22:27:57 -04:00
meta-virt-cfg.bbclass conf: defer DISTRO_FEATURE check to bbclass processing 2020-02-10 10:28:38 -05:00
meta-virt-hosts.bbclass config: introduce hostname generation hooks 2021-12-13 15:59:35 -05:00
meta-virt-k8s-cfg.bbclass conf: defer DISTRO_FEATURE check to bbclass processing 2020-02-10 10:28:38 -05:00
meta-virt-xen-cfg.bbclass xen: apply layer settings when xen DISTRO_FEATURE is enabled 2020-07-06 16:25:55 -04:00
qemuboot-testimage-network.bbclass xen images, qemuboot: configure xenbr0 bridge for runqemu, testimage 2022-05-09 08:08:31 -04:00
qemuboot-xen-defaults.bbclass xen: enable qemuboot for arm32 2022-05-18 13:52:14 -04:00
qemuboot-xen-dtb.bbclass Revert "xen: Disable PCI on qemuarm with Xen" 2022-06-20 12:07:45 -04:00
sanity-meta-virt.bbclass sanity-meta-virt: Watch for SanityCheck event 2017-10-12 21:59:51 -04:00