This is a note to let you know that I've just added the patch titled powerpc/cell: Fix crash in iic_setup_cpu() after per_cpu changes to the 4.0-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: powerpc-cell-fix-crash-in-iic_setup_cpu-after-per_cpu-changes.patch and it can be found in the queue-4.0 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From b0dd00addc5035f87ec9c5820dacc1ebc7fcb3e6 Mon Sep 17 00:00:00 2001 From: Michael Ellerman <mpe@xxxxxxxxxxxxxx> Date: Fri, 3 Apr 2015 14:11:53 +1100 Subject: powerpc/cell: Fix crash in iic_setup_cpu() after per_cpu changes From: Michael Ellerman <mpe@xxxxxxxxxxxxxx> commit b0dd00addc5035f87ec9c5820dacc1ebc7fcb3e6 upstream. The conversion from __get_cpu_var() to this_cpu_ptr() in iic_setup_cpu() is wrong. It causes an oops at boot. We need the per-cpu address of struct cpu_iic, not cpu_iic.regs->prio. Sparse noticed this, because we pass a non-iomem pointer to out_be64(), but we obviously don't check the sparse results often enough. Fixes: 69111bac42f5 ("powerpc: Replace __get_cpu_var uses") Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- arch/powerpc/platforms/cell/interrupt.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/powerpc/platforms/cell/interrupt.c +++ b/arch/powerpc/platforms/cell/interrupt.c @@ -163,7 +163,7 @@ static unsigned int iic_get_irq(void) void iic_setup_cpu(void) { - out_be64(this_cpu_ptr(&cpu_iic.regs->prio), 0xff); + out_be64(&this_cpu_ptr(&cpu_iic)->regs->prio, 0xff); } u8 iic_get_target_id(int cpu) Patches currently in stable-queue which might be from mpe@xxxxxxxxxxxxxx are queue-4.0/powerpc-cell-fix-crash-in-iic_setup_cpu-after-per_cpu-changes.patch queue-4.0/powerpc-perf-cap-64bit-userspace-backtraces-to-perf_max_stack_depth.patch queue-4.0/powerpc-jump_label-include-linux-jump_label.h-to-get-have_jump_label-define.patch queue-4.0/powerpc-fix-missing-l2-cache-size-in-sys-devices-system-cpu.patch queue-4.0/powerpc-cell-fix-cell-iommu-after-it_page_shift-changes.patch -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html