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| author | Nicholas Piggin <npiggin@gmail.com> | 2018-02-14 01:08:17 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-03-30 23:34:26 +1100 |
| commit | c0abd0c745bdabe027a8f013a866f385fba717b1 (patch) | |
| tree | ec65bc93c77077097d0d6326da4750dbd384cd05 /arch/powerpc/kernel/setup_64.c | |
| parent | 9bd9be006c8ec0ccf7cb0422d35033af39d3f969 (diff) | |
| download | linux-c0abd0c745bdabe027a8f013a866f385fba717b1.tar.gz | |
powerpc/64: move default SPR recording
Move this into the early setup code, and don't iterate over CPU masks.
We don't want to call into sysfs so early from setup, and a future patch
won't initialize CPU masks by the time this is called.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
[mpe: Fold in incremental fix from Nick for DSCR handling]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/kernel/setup_64.c')
| -rw-r--r-- | arch/powerpc/kernel/setup_64.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c index 3ce12af4906f0..dde34d35d1e73 100644 --- a/arch/powerpc/kernel/setup_64.c +++ b/arch/powerpc/kernel/setup_64.c @@ -254,6 +254,14 @@ static void cpu_ready_for_interrupts(void) get_paca()->kernel_msr = MSR_KERNEL; } +unsigned long spr_default_dscr = 0; + +void __init record_spr_defaults(void) +{ + if (early_cpu_has_feature(CPU_FTR_DSCR)) + spr_default_dscr = mfspr(SPRN_DSCR); +} + /* * Early initialization entry point. This is called by head.S * with MMU translation disabled. We rely on the "feature" of |