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powerpc/64s: Remove POWER9 DD1 support

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POWER9 DD1 was never a product. It is no longer supported by upstream
firmware, and it is not effectively supported in Linux due to lack of
testing.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Michael Ellerman <mpe@ellerman.id.au>
[mpe: Remove arch_make_huge_pte() entirely]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Nicholas Piggin
2018-07-05 18:47:00 +10:00
committed by Michael Ellerman
parent ce397d215c
commit 2bf1071a8d
32 changed files with 65 additions and 532 deletions
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27
arch/powerpc/platforms/powernv/smp.c
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@@ -283,23 +283,6 @@ static void pnv_cause_ipi(int cpu)
ic_cause_ipi(cpu);
}
static void pnv_p9_dd1_cause_ipi(int cpu)
{
int this_cpu = get_cpu();
/*
* POWER9 DD1 has a global addressed msgsnd, but for now we restrict
* IPIs to same core, because it requires additional synchronization
* for inter-core doorbells which we do not implement.
*/
if (cpumask_test_cpu(cpu, cpu_sibling_mask(this_cpu)))
doorbell_global_ipi(cpu);
else
ic_cause_ipi(cpu);
put_cpu();
}
static void __init pnv_smp_probe(void)
{
if (xive_enabled())
@@ -311,14 +294,10 @@ static void __init pnv_smp_probe(void)
ic_cause_ipi = smp_ops->cause_ipi;
WARN_ON(!ic_cause_ipi);
if (cpu_has_feature(CPU_FTR_ARCH_300)) {
if (cpu_has_feature(CPU_FTR_POWER9_DD1))
smp_ops->cause_ipi = pnv_p9_dd1_cause_ipi;
else
smp_ops->cause_ipi = doorbell_global_ipi;
} else {
if (cpu_has_feature(CPU_FTR_ARCH_300))
smp_ops->cause_ipi = doorbell_global_ipi;
else
smp_ops->cause_ipi = pnv_cause_ipi;
}
}
}