On 10.03.2020 18:49, p...@xen.org wrote: > From: Paul Durrant <pdurr...@amazon.com> > > Currently shared_info is a shared xenheap page but shared xenheap pages > complicate future plans for live-update of Xen so it is desirable to, > where possible, not use them [1]. This patch therefore converts shared_info > into a PGC_extra domheap page. This does entail freeing shared_info during > domain_relinquish_resources() rather than domain_destroy() so care is > needed to avoid de-referencing a NULL shared_info pointer hence some > extra checks of 'is_dying' are needed. > > NOTE: For Arm, the call to free_shared_info() in arch_domain_destroy() is > left in place since it is idempotent and called in the error path for > arch_domain_create(). > > [1] See > https://lists.xenproject.org/archives/html/xen-devel/2020-02/msg02018.html > > Signed-off-by: Paul Durrant <p...@xen.org> > --- > Cc: Stefano Stabellini <sstabell...@kernel.org> > Cc: Julien Grall <jul...@xen.org> > Cc: Volodymyr Babchuk <volodymyr_babc...@epam.com> > Cc: Andrew Cooper <andrew.coop...@citrix.com> > Cc: George Dunlap <george.dun...@citrix.com> > Cc: Ian Jackson <ian.jack...@eu.citrix.com> > Cc: Jan Beulich <jbeul...@suse.com> > Cc: Konrad Rzeszutek Wilk <konrad.w...@oracle.com> > Cc: Wei Liu <w...@xen.org> > > v6: > - Drop dump_shared_info() but tag the shared info in the 'ExtraPage' > dump > > v5: > - Incorporate new dump_shared_info() function > > v2: > - Addressed comments from Julien > - Expanded the commit comment to explain why this patch is wanted > --- > xen/arch/arm/domain.c | 2 ++
Julien, Stefano? (I'd prefer to commit the entire series in one go, rather than leaving out just this last patch.) Jan
