Messages in this thread | | | Subject | Re: [PATCH RESEND] x86/xen: enable early use of set_fixmap in 32-bit Xen PV guest | From | Boris Ostrovsky <> | Date | Mon, 20 Aug 2018 19:20:17 -0400 |
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On 08/20/2018 11:24 AM, Juergen Gross 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 ("x86/xen/time: Initialize pv xen time in init_hypervisor_platform()") > Signed-off-by: Juergen Gross <jgross@suse.com> > Reviewed-by: Thomas Gleixner <tglx@linutronix.de> > --- > Resending with corrected Fixes: tag > Boris, please take this via the Xen tree (Thomas asked us to do so)
Applied to for-linus-19b.
-boris
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