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| author |   Alexander Gordeev <agordeev@linux.ibm.com> | 2021-06-18 08:17:18 +0200 |
|---|---|---|
| committer |   Vasily Gorbik <gor@linux.ibm.com> | 2021-07-05 12:44:23 +0200 |
| commit | 5fa2ea0714d75bf631c111ca51e9bd2bf6dbfb87 (patch) | |
| tree | 22f2a3e18b655b14917bd8175d6892654e1f79ce /arch/s390/include/asm/ctl_reg.h | |
| parent | s390/boot: replace magic string check with a bootdata flag (diff) | |
| download | linux-dev-5fa2ea0714d75bf631c111ca51e9bd2bf6dbfb87.tar.xz linux-dev-5fa2ea0714d75bf631c111ca51e9bd2bf6dbfb87.zip | |
s390/mcck: move register validation to C code
This update partially reverts commit 3037a52f9846 ("s390/nmi:
do register validation as early as possible").
Storage error checks and control registers validation are left
in the assembler code, since correct ASCEs and page tables are
required to enable DAT - which is done before the C handler is
entered.
System damage, kernel instruction address and PSW MWP checks
are left in the assembler code as well, since there is no way
to proceed if one of these checks is failed.
The getcpu vdso syscall reads CPU number from the programmable
field of the TOD clock. Disregard the TOD programmable register
validity bit and load the CPU number into the TOD programmable
field unconditionally.
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/ctl_reg.h')
| -rw-r--r-- | arch/s390/include/asm/ctl_reg.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/s390/include/asm/ctl_reg.h b/arch/s390/include/asm/ctl_reg.h index ed5efbb531c4..adc0179fa34e 100644 --- a/arch/s390/include/asm/ctl_reg.h +++ b/arch/s390/include/asm/ctl_reg.h @@ -21,8 +21,6 @@ #define CR0_INTERRUPT_KEY_SUBMASK BIT(63 - 57) #define CR0_MEASUREMENT_ALERT_SUBMASK BIT(63 - 58) -#define CR2_GUARDED_STORAGE BIT(63 - 59) - #define CR14_UNUSED_32 BIT(63 - 32) #define CR14_UNUSED_33 BIT(63 - 33) #define CR14_CHANNEL_REPORT_SUBMASK BIT(63 - 35) |