[PATCH -next v4 1/4] mm: page_table_check: move pxx_user_accessible_page into x86
Tong Tiangen
tongtiangen at huawei.com
Tue Apr 19 23:44:10 PDT 2022
在 2022/4/19 17:29, Anshuman Khandual 写道:
>
>
> On 4/18/22 09:14, Tong Tiangen wrote:
>> --- a/mm/page_table_check.c
>> +++ b/mm/page_table_check.c
>> @@ -10,6 +10,14 @@
>> #undef pr_fmt
>> #define pr_fmt(fmt) "page_table_check: " fmt
>>
>> +#ifndef PMD_PAGE_SIZE
>> +#define PMD_PAGE_SIZE PMD_SIZE
>> +#endif
>> +
>> +#ifndef PUD_PAGE_SIZE
>> +#define PUD_PAGE_SIZE PUD_SIZE
>> +#endif
>
> Why cannot PMD_SIZE/PUD_SIZE be used on every platform instead ? What is the
> need for using PUD_PAGE_SIZE/PMD_PAGE_SIZE ? Are they different on x86 ?
> .
Hi, Pasha:
I checked the definitions of PMD_SIZE/PUD_SIZE and
PUD_PAGE_SIZE/PMD_PAGE_SIZE in x86 architecture and their use outside
the architecture(eg: in mm/, all used PMD_SIZE/PUD_SIZE), Would it be
better to use a unified PMD_SIZE/PUD_SIZE here?
Thanks,
Tong.
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