| Message ID | 674bef4f0b56492b4c30644ccaaf318869c84992.1543340240.git.christophe.leroy@c-s.fr (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | 0ed5b55884f8b1fa368454d47cc6ecf9790b8b99 |
| Headers | show |
| Series | powerpc/8xx: add exception frame marker | expand |
| Context | Check | Description |
|---|---|---|
| snowpatch_ozlabs/apply_patch | success | next/apply_patch Successfully applied |
| snowpatch_ozlabs/build-ppc64le | success | build succeded & removed 25 sparse warning(s) |
| snowpatch_ozlabs/build-ppc64be | warning | build succeeded but added 6 new sparse warning(s) |
| snowpatch_ozlabs/build-ppc64e | success | build succeded & removed 4 sparse warning(s) |
| snowpatch_ozlabs/build-pmac32 | success | build succeded & removed 2 sparse warning(s) |
| snowpatch_ozlabs/checkpatch | success | total: 0 errors, 0 warnings, 0 checks, 9 lines checked |
| snowpatch_ozlabs/apply_patch | success | next/apply_patch Successfully applied |
| snowpatch_ozlabs/build-ppc64le | success | build succeded & removed 2 sparse warning(s) |
| snowpatch_ozlabs/build-ppc64be | success | build succeded & removed 2 sparse warning(s) |
| snowpatch_ozlabs/build-ppc64e | success | build succeded & removed 2 sparse warning(s) |
| snowpatch_ozlabs/build-pmac32 | success | build succeded & removed 1 sparse warning(s) |
| snowpatch_ozlabs/checkpatch | success | total: 0 errors, 0 warnings, 0 checks, 9 lines checked |
| snowpatch_ozlabs/apply_patch | success | next/apply_patch Successfully applied |
| snowpatch_ozlabs/build-ppc64le | success | build succeded & removed 2 sparse warning(s) |
| snowpatch_ozlabs/build-ppc64be | success | build succeded & removed 2 sparse warning(s) |
| snowpatch_ozlabs/build-ppc64e | success | build succeded & removed 2 sparse warning(s) |
| snowpatch_ozlabs/build-pmac32 | success | build succeded & removed 1 sparse warning(s) |
| snowpatch_ozlabs/checkpatch | success | total: 0 errors, 0 warnings, 0 checks, 9 lines checked |
diff --git a/arch/powerpc/kernel/head_8xx.S b/arch/powerpc/kernel/head_8xx.S index 3b67b9533c82..5e72df2031cb 100644 --- a/arch/powerpc/kernel/head_8xx.S +++ b/arch/powerpc/kernel/head_8xx.S @@ -149,6 +149,9 @@ turn_on_mmu: li r10,MSR_KERNEL & ~(MSR_IR|MSR_DR); /* can take exceptions */ \ mtmsr r10; \ stw r0,GPR0(r11); \ + lis r10, STACK_FRAME_REGS_MARKER@ha; /* exception frame marker */ \ + addi r10, r10, STACK_FRAME_REGS_MARKER@l; \ + stw r10, 8(r11); \ SAVE_4GPRS(3, r11); \ SAVE_2GPRS(7, r11)
This patch adds STACK_FRAME_REGS_MARKER in the stack at exception entry in order to see interrupts in call traces as below: [ 0.013964] Call Trace: [ 0.014014] [c0745db0] [c007a9d4] tick_periodic.constprop.5+0xd8/0x104 (unreliable) [ 0.014086] [c0745dc0] [c007aa20] tick_handle_periodic+0x20/0x9c [ 0.014181] [c0745de0] [c0009cd0] timer_interrupt+0xa0/0x264 [ 0.014258] [c0745e10] [c000e484] ret_from_except+0x0/0x14 [ 0.014390] --- interrupt: 901 at console_unlock.part.7+0x3f4/0x528 [ 0.014390] LR = console_unlock.part.7+0x3f0/0x528 [ 0.014455] [c0745ee0] [c0050334] console_unlock.part.7+0x114/0x528 (unreliable) [ 0.014542] [c0745f30] [c00524e0] register_console+0x3d8/0x44c [ 0.014625] [c0745f60] [c0675aac] cpm_uart_console_init+0x18/0x2c [ 0.014709] [c0745f70] [c06614f4] console_init+0x114/0x1cc [ 0.014795] [c0745fb0] [c0658b68] start_kernel+0x300/0x3d8 [ 0.014864] [c0745ff0] [c00022cc] start_here+0x44/0x98 Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> --- arch/powerpc/kernel/head_8xx.S | 3 +++ 1 file changed, 3 insertions(+)