Paravirtualized kernels running on Xen use a three level tree for translation of guest specific physical addresses to machine global addresses. This p2m tree is used for construction of page table entries, so the p2m tree walk is performance critical.
By using a linear virtual mapped p2m list accesses to p2m elements can be sped up while even simplifying code. To achieve this goal some p2m related initializations have to be performed later in the boot process, as the final p2m list can be set up only after basic memory management functions are available. Changes in V2: - splitted patch 2 in 4 smaller ones as requested by David Vrabel - added highmem check when remapping kernel memory as requested by David Vrabel Juergen Gross (5): Xen: Delay remapping memory of pv-domain xen: Delay m2p_override initialization xen: Delay invalidating extra memory x86: Introduce function to get pmd entry pointer Xen: switch to linear virtual mapped sparse p2m list arch/x86/include/asm/pgtable_types.h | 1 + arch/x86/include/asm/xen/page.h | 37 +- arch/x86/mm/pageattr.c | 20 + arch/x86/xen/mmu.c | 38 +- arch/x86/xen/p2m.c | 1149 +++++++++++++--------------------- arch/x86/xen/setup.c | 460 +++++++------- arch/x86/xen/xen-ops.h | 6 +- 7 files changed, 760 insertions(+), 951 deletions(-) -- 2.1.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
