Heiko Carstens 7e1e0235b3 s390/mem_detect: fix diag260() program check new psw handling ... [ Upstream commit 86807f348f418a84970eebb8f9912a7eea16b497 ] The __diag260() inline asm temporarily changes the program check new psw to redirect a potential program check on the diag instruction. Restoring of the program check new psw is done in C code behind the inline asm. This can be problematic, especially if the function is inlined, since the compiler can reorder instructions in such a way that a different instruction, which may result in a program check, might be executed before the program check new psw has been restored. To avoid such a scenario move restoring into the inline asm. For consistency reasons move also saving of the original program check new psw into the inline asm. Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2021-07-20 16:05:44 +02:00
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boot	s390/mem_detect: fix diag260() program check new psw handling	2021-07-20 16:05:44 +02:00
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include	s390/processor: always inline stap() and __load_psw_mask()	2021-07-20 16:05:44 +02:00
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