The unwinder reports idle tasks' stack on XEN PV as unreliable which complicates things for at least live patching. The two patches in the series try to amend that by using similar approach as non-XEN x86 does. v2->v3: - change prototype of asm_cpu_bringup_and_idle() - replace %_ASM_SP with %rsp and %esp respectively - fix build for !CONFIG_XEN_PV_SMP v1->v2: - call instruction used instead of push+jmp - initial_stack used directly v1 https://lore.kernel.org/live-patching/20200312142007.11488-1-mbenes@xxxxxxx/ v2 https://lore.kernel.org/live-patching/20200319095606.23627-1-mbenes@xxxxxxx/ Miroslav Benes (2): x86/xen: Make the boot CPU idle task reliable x86/xen: Make the secondary CPU idle tasks reliable arch/x86/xen/smp_pv.c | 3 ++- arch/x86/xen/xen-head.S | 18 ++++++++++++++++-- 2 files changed, 18 insertions(+), 3 deletions(-) -- 2.25.1
