Re: [Crash-utility] [PATCH v2 0/6] Second phase of future support for x86_64 5-level page tables

Hi Dou, This v2 version tests OK on my sample set of dumpfiles. I didn't get a chance to fully review the patchset, and I will be out of the office until next Tuesday. I'll try to review the patches then.

Thanks very much, Dave ----- Original Message ----- > Changelog: > V1-->V2: > -Fix the backwards compatibility issues suggested by Dave > -Test with "mod","kmem -f","vm -p" command again. > > I found Dave had alread done the first phase of future support for x86_64 > 5-level page tables(commit 307e7f35f510). when I asked him about the > state of this work, he gave me a more detailed answer and suggestion. > I follow his advice, and do the following job. > > 1. Refine the original logical: > 1) Create some new common function for getting the offset of page table > 2) Repace the PML4 and UPML with the common PGD: > machdep->machspec->pml4/upml ==> machdep->pdg > 3) Using the PUD in x86_64 > > 2. Add 5-level page tables support for x86_64_k/uvtop() > > This patchset is the second phase of the work, As Dave said, we need to be > a manner of determining very early on whether the kernel page tables are > using 5-level and whether each user-space task is using 4- or 5-level page > tables. These will be done after this phase. > > About test work: > > I have tested this patchset with 4-level and 5-level paging table. > > sadump are not be tested. > > Dou Liyang (6): > defs.h: Fix the PHYSICAL_PAGE_MASK macro > x86_64: Extract public page table mapping code > x86_64: Unify the page table parsing for 4-level mode > x86_64.c: Add the VMEMMAP support for 5 level page table > x86_64: Add 5-level paging support for x86_64_k/uvtop() > x86_64: Fix the misusage of PGDIR_SHIFT > > defs.h | 58 ++--- > sadump.c | 7 +- > x86_64.c | 732 > ++++++++++++++++++++++++++++++++------------------------------- > 3 files changed, 399 insertions(+), 398 deletions(-) > > -- > 2.14.3 > > > >