diff options
| author | Sven Schnelle <svens@linux.ibm.com> | 2025-03-20 13:25:38 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-04-10 14:39:32 +0200 |
| commit | c76bb2d0aa54d8be4102e5480fa6bec353381699 (patch) | |
| tree | 2e775524b8ba5ed7f8f3148921fe875e9f21bad9 | |
| parent | 7e3497d7dacb5aee69dd9be842b778083cae0e75 (diff) | |
s390/entry: Fix setting _CIF_MCCK_GUEST with lowcore relocation
[ Upstream commit 121df45b37a1016ee6828c2ca3ba825f3e18a8c1 ]
When lowcore relocation is enabled, the machine check handler doesn't
use the lowcore address when setting _CIF_MCCK_GUEST. Fix this by
adding the missing base register.
Fixes: 0001b7bbc53a ("s390/entry: Make mchk_int_handler() ready for lowcore relocation")
Reported-by: Heiko Carstens <hca@linux.ibm.com>
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | arch/s390/kernel/entry.S | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S index 594da4cba707..a7de838f8031 100644 --- a/arch/s390/kernel/entry.S +++ b/arch/s390/kernel/entry.S @@ -501,7 +501,7 @@ SYM_CODE_START(mcck_int_handler) clgrjl %r9,%r14, 4f larl %r14,.Lsie_leave clgrjhe %r9,%r14, 4f - lg %r10,__LC_PCPU + lg %r10,__LC_PCPU(%r13) oi __PCPU_FLAGS+7(%r10), _CIF_MCCK_GUEST 4: BPENTER __SF_SIE_FLAGS(%r15),_TIF_ISOLATE_BP_GUEST SIEEXIT __SF_SIE_CONTROL(%r15),%r13 |