On Wed, 22 Apr 2026 at 18:26, Masami Hiramatsu (Google) <[email protected]> wrote: > From: Masami Hiramatsu (Google) <[email protected]> > > On real hardware, panic and machine reboot may not flush hardware cache > to memory. This means the persistent ring buffer, which relies on a > coherent state of memory, may not have its events written to the buffer > and they may be lost. Moreover, there may be inconsistency with the > counters which are used for validation of the integrity of the > persistent ring buffer which may cause all data to be discarded. > > To avoid this issue, stop recording of the ring buffer on panic and > flush the cache of the ring buffer's memory. > > Fixes: e645535a954a ("tracing: Add option to use memmapped memory for trace > boot instance") > Cc: [email protected] > Signed-off-by: Masami Hiramatsu (Google) <[email protected]> > Acked-by: Catalin Marinas <[email protected]>
> arch/m68k/include/asm/Kbuild | 1 + Acked-by: Geert Uytterhoeven <[email protected]> # m68k Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- [email protected] In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds
