On Thu, 16 Sep 2021 16:52:09 +0200, Christophe Leroy wrote: > dcbz instruction shouldn't be used on non-cached memory. Using > it on non-cached memory can result in alignment exception and > implies a heavy handling. > > Instead of silentely emulating the instruction and resulting in high > performance degradation, warn whenever an alignment exception is > taken in kernel mode due to dcbz, so that the user is made aware that > dcbz instruction has been used unexpectedly by the kernel. > > [...]
Applied to powerpc/next. [1/1] powerpc: warn on emulation of dcbz instruction in kernel mode https://git.kernel.org/powerpc/c/cbe654c779616807e1e6823c3bdbfe07a10562b8 cheers