[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH] xen: switch to post-init routines in xen mmu.c earlier
On 10/12/14 15:56, Juergen Gross wrote: > With the virtual mapped linear p2m list the post-init mmu operations > must be used for setting up the p2m mappings, as in case of > CONFIG_FLATMEM the init routines may trigger BUGs. > > Reported-by: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx> > Signed-off-by: Juergen Gross <jgross@xxxxxxxx> > --- > arch/x86/xen/mmu.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c > index 6ab6150..a1a429a 100644 > --- a/arch/x86/xen/mmu.c > +++ b/arch/x86/xen/mmu.c > @@ -1225,6 +1225,7 @@ static void __init xen_pagetable_p2m_setup(void) > static void __init xen_pagetable_init(void) > { > paging_init(); > + xen_post_allocator_init(); > > xen_pagetable_p2m_setup(); > This feels very chicken-and-egg to me: To setup the P2M we need to use the MMU ops that use the P2M... Please explain very clearly why this is all safe. > @@ -1236,7 +1237,6 @@ static void __init xen_pagetable_init(void) > xen_remap_memory(); > > xen_setup_shared_info(); > - xen_post_allocator_init(); > } > static void xen_write_cr2(unsigned long cr2) > { > _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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