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| author | Vasily Gorbik <gor@linux.ibm.com> | 2019-11-14 14:08:28 +0100 |
|---|---|---|
| committer | Vasily Gorbik <gor@linux.ibm.com> | 2019-11-20 12:58:13 +0100 |
| commit | c2313594216b3fde9559e502bb36d14e9d601a56 (patch) | |
| tree | 13ab7e185f35cbc2d93107bb1fac3e976ccaa8ee | |
| parent | s390/head64: remove unnecessary vdso_per_cpu_data setup (diff) | |
| download | linux-c2313594216b3fde9559e502bb36d14e9d601a56.tar.xz linux-c2313594216b3fde9559e502bb36d14e9d601a56.zip | |
s390/early: move access registers setup in C code
Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
| -rw-r--r-- | arch/s390/kernel/early.c | 9 | ||||
| -rw-r--r-- | arch/s390/kernel/head64.S | 10 |
2 files changed, 11 insertions, 8 deletions
diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c index 0ed6ae6a8bde..db32a55daaec 100644 --- a/arch/s390/kernel/early.c +++ b/arch/s390/kernel/early.c @@ -30,6 +30,7 @@ #include <asm/sclp.h> #include <asm/facility.h> #include <asm/boot_data.h> +#include <asm/switch_to.h> #include "entry.h" static void __init reset_tod_clock(void) @@ -271,6 +272,13 @@ static inline void setup_control_registers(void) __ctl_load(reg, 0, 0); } +static inline void setup_access_registers(void) +{ + unsigned int acrs[NUM_ACRS] = { 0 }; + + restore_access_regs(acrs); +} + static int __init disable_vector_extension(char *str) { S390_lowcore.machine_flags &= ~MACHINE_FLAG_VX; @@ -329,5 +337,6 @@ void __init startup_init(void) setup_topology(); sclp_early_detect(); setup_control_registers(); + setup_access_registers(); lockdep_on(); } diff --git a/arch/s390/kernel/head64.S b/arch/s390/kernel/head64.S index 9d649abddffd..b9e585f528a6 100644 --- a/arch/s390/kernel/head64.S +++ b/arch/s390/kernel/head64.S @@ -35,13 +35,8 @@ ENTRY(startup_continue) #ifdef CONFIG_KASAN brasl %r14,kasan_early_init #endif -# -# Early machine initialization and detection functions. -# - brasl %r14,startup_init - - lam 0,15,.Laregs-.LPG1(%r13) # load acrs needed by uaccess - brasl %r14,start_kernel # go to C code + brasl %r14,startup_init # s390 specific early init + brasl %r14,start_kernel # common init code # # We returned from start_kernel ?!? PANIK # @@ -51,4 +46,3 @@ ENTRY(startup_continue) .align 16 .LPG1: .Ldw: .quad 0x0002000180000000,0x0000000000000000 -.Laregs:.long 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 |