diff options
| author |   Sven Schnelle <svens@linux.ibm.com> | 2024-02-20 15:18:56 +0100 |
|---|---|---|
| committer |   Heiko Carstens <hca@linux.ibm.com> | 2024-03-17 19:08:49 +0100 |
| commit | 29e5bc0f023a1110d1539d75ccac3b4cdcadec5e (patch) | |
| tree | 33bcbe8628046622980f031f07de1039f9754c8c /arch | |
| parent | s390/entry: add CIF_SIE flag and remove sie64a() address check (diff) | |
| download | wireguard-linux-29e5bc0f023a1110d1539d75ccac3b4cdcadec5e.tar.xz wireguard-linux-29e5bc0f023a1110d1539d75ccac3b4cdcadec5e.zip | |
s390/entry: remove OUTSIDE macro
With only one OUTSIDE user left, remove the macro and move the code
directly to the machine check handler. This has the advantage that
it is much easier to determine which registers are used.
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/s390/kernel/entry.S | 29 |
1 files changed, 4 insertions, 25 deletions
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S index 4e0ff79ffee3..a0543db0bcae 100644 --- a/arch/s390/kernel/entry.S +++ b/arch/s390/kernel/entry.S @@ -119,29 +119,6 @@ _LPP_OFFSET = __LC_LPP .endm #if IS_ENABLED(CONFIG_KVM) - /* - * The OUTSIDE macro jumps to the provided label in case the value - * in the provided register is outside of the provided range. The - * macro is useful for checking whether a PSW stored in a register - * pair points inside or outside of a block of instructions. - * @reg: register to check - * @start: start of the range - * @end: end of the range - * @outside_label: jump here if @reg is outside of [@start..@end) - */ - .macro OUTSIDE reg,start,end,outside_label - lgr %r14,\reg - larl %r13,\start - slgr %r14,%r13 - clgfrl %r14,.Lrange_size\@ - jhe \outside_label - .section .rodata, "a" - .balign 4 -.Lrange_size\@: - .long \end - \start - .previous - .endm - .macro SIEEXIT lg %r9,__SF_SIE_CONTROL(%r15) # get control block pointer ni __SIE_PROG0C+3(%r9),0xfe # no longer in SIE @@ -236,7 +213,6 @@ SYM_FUNC_START(__sie64a) 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 -.Lsie_done: ni __LC_CPU_FLAGS+7,255-_CIF_SIE # 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 @@ -525,7 +501,10 @@ SYM_CODE_START(mcck_int_handler) # and entering SIE (or leaving and clearing the flag). This # would cause machine checks targeted at the guest to be # handled by the host. - OUTSIDE %r9,.Lsie_entry,.Lsie_leave,4f + larl %r14,.Lsie_entry + clgrjl %r9,%r14, 4f + larl %r14,.Lsie_leave + clgrjhe %r9,%r14, 4f oi __LC_CPU_FLAGS+7, _CIF_MCCK_GUEST 4: BPENTER __SF_SIE_FLAGS(%r15),_TIF_ISOLATE_BP_GUEST SIEEXIT |