[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [RFC PATCH 29/84] efi: use new page table APIs in copy_mapping
From: Wei Liu <wei.liu2@xxxxxxxxxx> After inspection ARM doesn't have alloc_xen_pagetable so this function is x86 only, which means it is safe for us to change. Signed-off-by: Wei Liu <wei.liu2@xxxxxxxxxx> --- XXX test this in gitlab ci to be sure. --- xen/common/efi/boot.c | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-) diff --git a/xen/common/efi/boot.c b/xen/common/efi/boot.c index 79193784ff..62b5944e61 100644 --- a/xen/common/efi/boot.c +++ b/xen/common/efi/boot.c @@ -1440,16 +1440,22 @@ static __init void copy_mapping(unsigned long mfn, unsigned long end, continue; if ( !(l4e_get_flags(l4e) & _PAGE_PRESENT) ) { - l3dst = alloc_xen_pagetable(); - BUG_ON(!l3dst); + mfn_t l3t_mfn; + + l3t_mfn = alloc_xen_pagetable_new(); + BUG_ON(mfn_eq(l3t_mfn, INVALID_MFN)); + l3dst = map_xen_pagetable_new(l3t_mfn); clear_page(l3dst); efi_l4_pgtable[l4_table_offset(mfn << PAGE_SHIFT)] = - l4e_from_paddr(virt_to_maddr(l3dst), __PAGE_HYPERVISOR); + l4e_from_mfn(l3t_mfn, __PAGE_HYPERVISOR); } else - l3dst = l4e_to_l3e(l4e); - l3src = l4e_to_l3e(idle_pg_table[l4_table_offset(va)]); + l3dst = map_xen_pagetable_new(l4e_get_mfn(l4e)); + l3src = map_xen_pagetable_new( + l4e_get_mfn(idle_pg_table[l4_table_offset(va)])); l3dst[l3_table_offset(mfn << PAGE_SHIFT)] = l3src[l3_table_offset(va)]; + UNMAP_XEN_PAGETABLE_NEW(l3src); + UNMAP_XEN_PAGETABLE_NEW(l3dst); } } -- 2.17.1 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/xen-devel
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