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

[Dou Liyang]

Hi Dave,

At 01/13/2018 04:56 AM, Dave Anderson wrote:
> 
> 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.

Thank you for telling me that.

I also test this patchset with *sadump* file with my colleagues. it is
OK too.

And I am trying to make the 5-level page tables support for Xen.

Thanks,
	dou.

> 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
>>
>>
>>
>>
> 
> 
>