On 08/01/2016, 03:36 PM, lists@ssl-mail.com wrote:

Hi.

Current Virtualization:Xen + Kernel:Stable on Opensuse on UEFI is broken. It PANICs on boot, Xen Dom0 is unusable.

http://lists.opensuse.org/opensuse-virtual/2016-07/msg00014.html

Latest response from Xen-Devel wants a patch to the kernel

https://lists.xen.org/archives/html/xen-devel/2016-07/msg03102.html https://lists.xen.org/archives/html/xen-devel/2016-07/msg02928.html

It's this commit

commit 55f1ea15216a5a14c96738bd5284100a00ffa9dc Author: Vitaly Kuznetsov Date: Tue May 31 11:23:43 2016 +0100

efi: Fix for_each_efi_memory_desc_in_map() for empty memmaps

The patch is in 4.7 since 4.7-rc3. So we cannot take the patch given it is included already. regards, -- js suse labs -- To unsubscribe, e-mail: opensuse-kernel+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-kernel+owner@opensuse.org

On Tue, Aug 2, 2016, at 06:07 AM, lists@ssl-mail.com wrote:

On Tue, Aug 2, 2016, at 12:03 AM, Jiri Slaby wrote:

...

The patch is in 4.7 since 4.7-rc3. So we cannot take the patch given it is included already.

It looks like the patch needs to be patched https://lists.xen.org/archives/html/xen-devel/2016-08/msg00399.html Specifically - (md) <= (efi_memory_desc_t *)((m)->map_end - (m)->desc_size); \ - + ((void *)(md) + (m)->desc_size) <= (m)->map_end; \ + + ((void *)(md) + (m)->desc_size - 1) < (m)->map_end; \ -- To unsubscribe, e-mail: opensuse-kernel+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-kernel+owner@opensuse.org

On Thu, Aug 4, 2016, at 07:10 AM, Jiri Slaby wrote:

That's incorrect IMO. Either -1 or <. Not both -1 and <.

The current kernel, with the "unpatched patch" causes a reproducible PANIC on boot of Xen. The system will NOT boot anymore. With the "patched patch", the system boots OK again. If it's incorrect then it should be fixed before it goes upstream right? -- To unsubscribe, e-mail: opensuse-kernel+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-kernel+owner@opensuse.org