On 04/05/2024 14.28, Nicholas Piggin wrote:
The exception stack setup does not work correctly for SMP, because it is the boot processor that calls cpu_set() which sets SPRG2 to the exception stack, not the target CPU itself. So secondaries never got their SPRG2 set to a valid exception stack.
So secondary CPUs currently must not run into any exceptions?
Remove the SMP code and just set an exception stack for the boot processor. Make the stack 64kB while we're here, to match the size of the regular stack. Signed-off-by: Nicholas Piggin <npiggin@xxxxxxxxx> --- lib/powerpc/setup.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-)
Reviewed-by: Thomas Huth <thuth@xxxxxxxxxx>
