diff options
| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2021-06-03 08:41:41 +0000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-06-17 00:09:08 +1000 |
| commit | 86f46f3432727933be82f64b739712a6edb9d704 (patch) | |
| tree | 4797bb3b570922ef556c49f012a72d1aaff8c033 /arch/powerpc/kernel/smp.c | |
| parent | 882136fb2f5208a35ddad9205b20e5791edd4782 (diff) | |
| download | linux-86f46f3432727933be82f64b739712a6edb9d704.tar.gz | |
powerpc/32s: Initialise KUAP and KUEP in C
In order to selectively activate KUAP and KUEP in a following patch,
perform KUAP and KUEP initialisation in C.
Unlike PPC64, PPC32 doesn't have an early_setup_secondary(),
so do it in start_secondary().
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/87be72023448dd4e476744ed279b8c04b8d08a1c.1622708530.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/kernel/smp.c')
| -rw-r--r-- | arch/powerpc/kernel/smp.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c index 2e05c783440a33..820ae31e023190 100644 --- a/arch/powerpc/kernel/smp.c +++ b/arch/powerpc/kernel/smp.c @@ -1541,6 +1541,10 @@ void start_secondary(void *unused) { unsigned int cpu = raw_smp_processor_id(); + /* PPC64 calls setup_kup() in early_setup_secondary() */ + if (IS_ENABLED(CONFIG_PPC32)) + setup_kup(); + mmgrab(&init_mm); current->active_mm = &init_mm; |