Messages in this thread | | | From | Pasha Tatashin <> | Subject | Re: [PATCH] x86/xen: enable early use of set_fixmap in 32-bit Xen PV guest | Date | Wed, 22 Aug 2018 19:28:17 +0000 |
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On Fri, Aug 17, 2018 at 9:41 AM Juergen Gross <jgross@suse.com> wrote: > > Commit 7b25b9cb0dad83 ("x86/xen/time: Initialize pv xen time in > init_hypervisor_platform()") moved the mapping of the shared info area > before pagetable_init(). This breaks booting as 32-bit PV guest as the > use of set_fixmap isn't possible at this time on 32-bit. > > This can be worked around by populating the needed PMD on 32-bit > kernel earlier. > > In order not to reimplement populate_extra_pte() using extend_brk() > for allocating new page tables extend alloc_low_pages() to do that in > case the early page table pool is not yet available. > > Fixes: 7b25b9cb0dad83
Fixes: 7b25b9cb0dad ("x86/xen/time: Initialize pv xen time in init_hypervisor_platform()")
Reviewed-by: Pavel Tatashin <pavel.tatashin@microsoft.com> | |