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| author | Nicholas Piggin <npiggin@gmail.com> | 2017-12-22 14:17:09 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-01-17 16:42:14 +0300 |
| commit | 98ae0069cb78ca4f5d14f203e3bb43874591123f (patch) | |
| tree | c536c4965c3fede09e0182b96652eb6434a985e9 /arch/powerpc/mm/pgtable-radix.c | |
| parent | 1513c33d7174e87a079cfa2666cb9a3eba56a0ea (diff) | |
| download | linux-98ae0069cb78ca4f5d14f203e3bb43874591123f.tar.xz | |
powerpc/pseries: radix is not subject to RMA limit, remove it
The radix guest is not subject to the paravirtualized HPT VRMA limit,
so remove that from ppc64_rma_size calculation for that platform.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/mm/pgtable-radix.c')
| -rw-r--r-- | arch/powerpc/mm/pgtable-radix.c | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/arch/powerpc/mm/pgtable-radix.c b/arch/powerpc/mm/pgtable-radix.c index ddf584333bcf..60927d019bbf 100644 --- a/arch/powerpc/mm/pgtable-radix.c +++ b/arch/powerpc/mm/pgtable-radix.c @@ -631,15 +631,12 @@ void radix__setup_initial_memory_limit(phys_addr_t first_memblock_base, if (!early_cpu_has_feature(CPU_FTR_HVMODE)) { /* - * We limit the allocation that depend on ppc64_rma_size - * to first_memblock_size. We also clamp it to 1GB to - * avoid some funky things such as RTAS bugs. + * Radix mode guests are not limited by RMA / VRMA addressing. * - * On radix config we really don't have a limitation - * on real mode access. But keeping it as above works - * well enough. + * We do clamp addresses to 1GB to avoid some funky things + * such as RTAS bugs. */ - ppc64_rma_size = min_t(u64, first_memblock_size, 0x40000000); + ppc64_rma_size = 0x40000000; /* * Finally limit subsequent allocations. We really don't want * to limit the memblock allocations to rma_size. FIXME!! should |