On 16.01.24 12:53, Jiri Slaby wrote: > On 09. 08. 22, 20:24, Rik van Riel wrote: >> Align larger anonymous memory mappings on THP boundaries by >> going through thp_get_unmapped_area if THPs are enabled for >> the current process. >> >> With this patch, larger anonymous mappings are now THP aligned. >> When a malloc library allocates a 2MB or larger arena, that >> arena can now be mapped with THPs right from the start, which >> can result in better TLB hit rates and execution time. > > This appears to break 32bit processes on x86_64 (at least). In > particular, 32bit kernel or firefox builds in our build system. > > Reverting this on top of 6.7 makes it work again. > > Downstream report: > https://bugzilla.suse.com/show_bug.cgi?id=1218841 > [...] Trying this again, sorry for the noise: #regzbot ^introduced efa7df3e3bb5 #regzbot title mm: huge_memory: 32 bit systems or compat userspace broke #regzbot link: https://bugzilla.suse.com/show_bug.cgi?id=1218841 #regzbot fix: mm: huge_memory: don't force huge page alignment on 32 bit #regzbot ignore-activity Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat) -- Everything you wanna know about Linux kernel regression tracking: https://linux-regtracking.leemhuis.info/about/#tldr That page also explains what to do if mails like this annoy you.
