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639886b71d
Commitada1da31ce("s390/sclp: sort out physical vs virtual pointers usage") fixed the notion of virtual address for sclp_early_sccb pointer. However, it did not take into account that kasan_early_init() can also output messages and sclp_early_sccb should be adjusted by the time kasan_early_init() is called. Currently it is not a problem, since virtual and physical addresses on s390 are the same. Nevertheless, should they ever differ, this would cause an invalid pointer access. Fixes:ada1da31ce("s390/sclp: sort out physical vs virtual pointers usage") Reviewed-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
42 lines
983 B
ArmAsm
42 lines
983 B
ArmAsm
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright IBM Corp. 1999, 2010
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*
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* Author(s): Hartmut Penner <hp@de.ibm.com>
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* Martin Schwidefsky <schwidefsky@de.ibm.com>
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* Rob van der Heij <rvdhei@iae.nl>
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*
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*/
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#include <linux/init.h>
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#include <linux/linkage.h>
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#include <asm/asm-offsets.h>
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#include <asm/thread_info.h>
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#include <asm/page.h>
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#include <asm/ptrace.h>
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__HEAD
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ENTRY(startup_continue)
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larl %r1,tod_clock_base
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mvc 0(16,%r1),__LC_BOOT_CLOCK
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#
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# Setup stack
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#
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larl %r14,init_task
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stg %r14,__LC_CURRENT
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larl %r15,init_thread_union+THREAD_SIZE-STACK_FRAME_OVERHEAD-__PT_SIZE
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brasl %r14,sclp_early_adjust_va # allow sclp_early_printk
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#ifdef CONFIG_KASAN
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brasl %r14,kasan_early_init
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#endif
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brasl %r14,startup_init # s390 specific early init
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brasl %r14,start_kernel # common init code
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#
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# We returned from start_kernel ?!? PANIK
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#
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basr %r13,0
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lpswe .Ldw-.(%r13) # load disabled wait psw
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.align 16
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.LPG1:
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.Ldw: .quad 0x0002000180000000,0x0000000000000000
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