| Message ID | 1369106602.6387.35.camel@pasglop (mailing list archive) |
|---|---|
| State | Accepted, archived |
| Commit | 8fc1f5d7eff9a4ed0cdb7215e7ca4b82b931d6d7 |
| Headers | show |
diff --git a/arch/powerpc/kernel/cpu_setup_power.S b/arch/powerpc/kernel/cpu_setup_power.S index a283b64..18b5b9c 100644 --- a/arch/powerpc/kernel/cpu_setup_power.S +++ b/arch/powerpc/kernel/cpu_setup_power.S @@ -135,8 +135,12 @@ __init_HFSCR: blr __init_TLB: - /* Clear the TLB */ - li r6,128 + /* + * Clear the TLB using the "IS 3" form of tlbiel instruction + * (invalidate by congruence class). P7 has 128 CCs, P8 has 512 + * so we just always do 512 + */ + li r6,512 mtctr r6 li r7,0xc00 /* IS field = 0b11 */ ptesync
The TLB has 512 congruence classes (2048 entries 4 way set associative) while P7 had 128 Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> --- arch/powerpc/kernel/cpu_setup_power.S | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)