From e0ffcf3fe18e0310221461c08969edec2cc7628c Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Mon, 30 May 2022 14:20:50 +0200 Subject: s390/stack: add union to reflect kvm stack slot usages Add a union which describes how the empty stack slots are being used by kvm and perf. This should help to avoid another bug like the one which was fixed with commit c9bfb460c3e4 ("s390/perf: obtain sie_block from the right address"). Reviewed-by: Nico Boehr Tested-by: Nico Boehr Signed-off-by: Heiko Carstens --- arch/s390/kernel/perf_event.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/s390/kernel/perf_event.c') diff --git a/arch/s390/kernel/perf_event.c b/arch/s390/kernel/perf_event.c index e259ff1f5ad3..c27321cb0969 100644 --- a/arch/s390/kernel/perf_event.c +++ b/arch/s390/kernel/perf_event.c @@ -30,7 +30,7 @@ static struct kvm_s390_sie_block *sie_block(struct pt_regs *regs) if (!stack) return NULL; - return (struct kvm_s390_sie_block *)stack->empty[1]; + return (struct kvm_s390_sie_block *)stack->sie_control_block; } static bool is_in_guest(struct pt_regs *regs) -- cgit v1.2.3-59-g8ed1b