d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Improve comment for compat32 handling of sysctl hw.pagesizes.

Browse Source 
Explain why truncation works as intended.
Reformat.

Sponsored by:	The FreeBSD Foundation
MFC after:	3 days
This commit is contained in:
Konstantin Belousov 2020-05-15 13:53:10 +00:00
parent 6820cbed71
commit a2b127ae7b
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=361079
1 changed files with 3 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
sys/kern/kern_mib.c
View File

@ -238,8 +238,9 @@ sysctl_hw_pagesizes(SYSCTL_HANDLER_ARGS)
if (req->flags & SCTL_MASK32) {
/*
* Recreate the "pagesizes" array with 32-bit elements. Truncate
* any page size greater than UINT32_MAX to zero.
* Recreate the "pagesizes" array with 32-bit elements.
* Truncate any page size greater than UINT32_MAX to zero,
* which assumes that page sizes are powers of two.
*/
for (i = 0; i < MAXPAGESIZES; i++)
pagesizes32[i] = (uint32_t)pagesizes[i];