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| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2021-06-09 09:10:29 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-06-16 17:09:11 +0300 |
| commit | ab3aab292cb2f417f63b8f4887c1dd01c2a831cd (patch) | |
| tree | cb57a2439eeca7984d6178438afe829701a41014 /arch/powerpc/platforms/powernv | |
| parent | 77b0bed74232c480b94bae188b6c7cd0ddee92e8 (diff) | |
| download | linux-ab3aab292cb2f417f63b8f4887c1dd01c2a831cd.tar.xz | |
powerpc: Move update_power8_hid0() into its only user
update_power8_hid0() is used only by powernv platform subcore.c
Move it there.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/37f41d74faa0c66f90b373e243e8b1ee37a1f6fa.1623219019.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/platforms/powernv')
| -rw-r--r-- | arch/powerpc/platforms/powernv/subcore.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/powernv/subcore.c b/arch/powerpc/platforms/powernv/subcore.c index 73207b53dc2b..7e98b00ea2e8 100644 --- a/arch/powerpc/platforms/powernv/subcore.c +++ b/arch/powerpc/platforms/powernv/subcore.c @@ -169,6 +169,16 @@ static void update_hid_in_slw(u64 hid0) } } +static inline void update_power8_hid0(unsigned long hid0) +{ + /* + * The HID0 update on Power8 should at the very least be + * preceded by a SYNC instruction followed by an ISYNC + * instruction + */ + asm volatile("sync; mtspr %0,%1; isync":: "i"(SPRN_HID0), "r"(hid0)); +} + static void unsplit_core(void) { u64 hid0, mask; |