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| author | Sven Schnelle <svens@linux.ibm.com> | 2024-07-22 15:41:16 +0200 |
|---|---|---|
| committer | Vasily Gorbik <gor@linux.ibm.com> | 2024-07-23 16:02:32 +0200 |
| commit | 12184a46767b40c1c9b022cd96a9b4019ebd368f (patch) | |
| tree | ca32ae1447405ba7d729308002ab1d868beb96f8 /arch | |
| parent | s390/head64: Make startup code ready for lowcore relocation (diff) | |
| download | linux-12184a46767b40c1c9b022cd96a9b4019ebd368f.tar.xz linux-12184a46767b40c1c9b022cd96a9b4019ebd368f.zip | |
s390/entry: Make __sie64a() ready for lowcore relocation
In preparation of having lowcore at different address than zero,
add the base register to all lowcore accesses in __sie64a().
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>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/s390/kernel/entry.S | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S index df351622c94c..618b8b774932 100644 --- a/arch/s390/kernel/entry.S +++ b/arch/s390/kernel/entry.S @@ -28,6 +28,7 @@ #include <asm/setup.h> #include <asm/nmi.h> #include <asm/nospec-insn.h> +#include <asm/lowcore.h> _LPP_OFFSET = __LC_LPP @@ -184,7 +185,8 @@ SYM_FUNC_END(__switch_to_asm) */ SYM_FUNC_START(__sie64a) stmg %r6,%r14,__SF_GPRS(%r15) # save kernel registers - lg %r14,__LC_CURRENT + GET_LC %r13 + lg %r14,__LC_CURRENT(%r13) stg %r2,__SF_SIE_CONTROL_PHYS(%r15) # save sie block physical.. stg %r3,__SF_SIE_CONTROL(%r15) # ...and virtual addresses stg %r4,__SF_SIE_SAVEAREA(%r15) # save guest register save area @@ -211,8 +213,9 @@ SYM_FUNC_START(__sie64a) .Lsie_skip: lg %r14,__SF_SIE_CONTROL(%r15) # get control block pointer ni __SIE_PROG0C+3(%r14),0xfe # no longer in SIE - lctlg %c1,%c1,__LC_KERNEL_ASCE # load primary asce - lg %r14,__LC_CURRENT + GET_LC %r14 + lctlg %c1,%c1,__LC_KERNEL_ASCE(%r14) # load primary asce + lg %r14,__LC_CURRENT(%r14) mvi __TI_sie(%r14),0 # some program checks are suppressing. C code (e.g. do_protection_exception) # will rewind the PSW by the ILC, which is often 4 bytes in case of SIE. There |