Re: [PATCH] mm: thp: Replace HTTP links with HTTPS ones

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On 7/13/20 6:43 PM, Alexander A. Klimov wrote:
> Rationale:
> Reduces attack surface on kernel devs opening the links for MITM
> as HTTPS traffic is much harder to manipulate.
> 
> Deterministic algorithm:
> For each file:
>   If not .svg:
>     For each line:
>       If doesn't contain `\bxmlns\b`:
>         For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`:
> 	  If neither `\bgnu\.org/license`, nor `\bmozilla\.org/MPL\b`:
>             If both the HTTP and HTTPS versions
>             return 200 OK and serve the same content:
>               Replace HTTP with HTTPS.
> 
> Signed-off-by: Alexander A. Klimov <grandmaster@xxxxxxxxxxxx>
> ---
>  Continuing my work started at 93431e0607e5.
>  See also: git log --oneline '--author=Alexander A. Klimov <grandmaster@xxxxxxxxxxxx>' v5.7..master
>  (Actually letting a shell for loop submit all this stuff for me.)
> 
>  If there are any URLs to be removed completely or at least not just HTTPSified:
>  Just clearly say so and I'll *undo my change*.
>  See also: https://lkml.org/lkml/2020/6/27/64
> 
>  If there are any valid, but yet not changed URLs:
>  See: https://lkml.org/lkml/2020/6/26/837
> 
>  If you apply the patch, please let me know.
> 
>  Sorry again to all maintainers who complained about subject lines.
>  Now I realized that you want an actually perfect prefixes,
>  not just subsystem ones.
>  I tried my best...
>  And yes, *I could* (at least half-)automate it.
>  Impossible is nothing! :)
> 
> 
>  mm/huge_memory.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/mm/huge_memory.c b/mm/huge_memory.c
> index 78c84bee7e29..9e4b78cf73ab 100644
> --- a/mm/huge_memory.c
> +++ b/mm/huge_memory.c
> @@ -2069,7 +2069,7 @@ static void __split_huge_pmd_locked(struct vm_area_struct *vma, pmd_t *pmd,
>  	 * free), userland could trigger a small page size TLB miss on the
>  	 * small sized TLB while the hugepage TLB entry is still established in
>  	 * the huge TLB. Some CPU doesn't like that.
> -	 * See http://support.amd.com/us/Processor_TechDocs/41322.pdf, Erratum
> +	 * See https://support.amd.com/us/Processor_TechDocs/41322.pdf, Erratum
>  	 * 383 on page 93. Intel should be safe but is also warns that it's

Well, it was a good opportunity to find out that the link doesn't work anyway.
The pdf seems to be now at
http://support.amd.com/TechDocs/41322_10h_Rev_Gd.pdf
and the erratum is on page 105

>  	 * only safe if the permission and cache attributes of the two entries
>  	 * loaded in the two TLB is identical (which should be the case here).
> 





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