tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
s390/entry: Use lay instead of aghik
Use the lay instruction instead of aghik. aghik is only available since
z196, therefore compiling the kernel for z10 results in this error:
arch/s390/kernel/entry.S: Assembler messages:
arch/s390/kernel/entry.S:165: Error: Unrecognized opcode: `aghik'
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202511261518.nBbQN5h7-lkp@intel.com/
Fixes: f5730d44e05e ("s390: Add stackprotector support")
Reviewed-by: Jan Polensky <japo@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
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arch/s390/kernel/entry.S
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arch/s390/kernel/entry.S
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stg %r3,__LC_CURRENT(%r13) # store task struct of next
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stg %r15,__LC_KERNEL_STACK(%r13) # store end of kernel stack
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lg %r15,__THREAD_ksp(%r1,%r3) # load kernel stack of next
165
-
aghik %r4,%r3,__TASK_pid
165
+
lay %r4,__TASK_pid(%r3)
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mvc __LC_CURRENT_PID(4,%r13),0(%r4) # store pid of next
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ALTERNATIVE "nop", "lpp _LPP_OFFSET(%r13)", ALT_FACILITY(40)
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#ifdef CONFIG_STACKPROTECTOR