From: Heiko Carstens Date: Mon, 27 Mar 2023 09:37:23 +0000 (+0200) Subject: s390/stack: set lowcore kernel stack pointer early X-Git-Tag: v6.6.17~4955^2~61 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=cfea9bc78bc3f99abcef3efbe7631d3ed3b70406;p=platform%2Fkernel%2Flinux-rpi.git s390/stack: set lowcore kernel stack pointer early Make sure the lowcore kernel stack pointer reflects the kernel stack of the current task as early as possible, instead of having a NULL pointer there. Reviewed-by: Vasily Gorbik Signed-off-by: Heiko Carstens Signed-off-by: Vasily Gorbik --- diff --git a/arch/s390/kernel/head64.S b/arch/s390/kernel/head64.S index 82399b4..f67982f 100644 --- a/arch/s390/kernel/head64.S +++ b/arch/s390/kernel/head64.S @@ -25,6 +25,7 @@ ENTRY(startup_continue) larl %r14,init_task stg %r14,__LC_CURRENT larl %r15,init_thread_union+STACK_INIT_OFFSET + stg %r15,__LC_KERNEL_STACK brasl %r14,sclp_early_adjust_va # allow sclp_early_printk brasl %r14,startup_init # s390 specific early init brasl %r14,start_kernel # common init code