* Regression caused by "arm64: Reduce PT size estimation complexity"
@ 2025-10-24 4:15 Shawn Guo
0 siblings, 0 replies; only message in thread
From: Shawn Guo @ 2025-10-24 4:15 UTC (permalink / raw)
To: Marc Zyngier, Pierre-Clément Tosi, Ying-Chun Liu
Cc: Alexander Graf, Tom Rini, u-boot
Hi folks,
While commit 94d30f476fe1 ("arm64: Reduce PT size estimation complexity")
speeds up the PT size calculation, it seems the result size becomes
unnecessarily bigger than before. For example, on my device, the
original count_required_pts() returns 6 for get_page_table_size(),
while count_ranges() returns 14 now. That said, the PT size returned by
get_page_table_size() eventually becomes 64 KiB bigger than before.
This is too much for my device which sets up PT on SRAM, and causing
a regression here.
Could you guys take a look and see whether we can get PT size
calculation speedy *and* compact? :)
Thanks,
Shawn
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2025-10-24 4:15 UTC | newest]
Thread overview: (only message) (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2025-10-24 4:15 Regression caused by "arm64: Reduce PT size estimation complexity" Shawn Guo
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.