Le 23/09/2022 à 17:41, Nicholas Piggin a écrit : > extable is used for handling user memory access faults from kernel mode, > as such it is a fast-ish path. Using it in the very slow WARN path > increases the number of extable entries from 1306 to 6516 in a > ppc64le_defconfig vmlinux, increasing the average number of search > steps by ~2.3. > > This patch adds a recovery address to the bug_entry struct instead of > using the extable. The size of the bug entry table plus the extable > go from 137kB to 126kB.
That's fine, but it means that some additional work will have to be done in objtool. Christophe
