diff options
| author | Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> | 2017-03-27 19:43:14 -0400 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-04-04 13:27:59 +1000 |
| commit | 687da8fce1682c9f1e87530e731189863c588265 (patch) | |
| tree | e7fa7704e2107af08b81d49e14d7d0cba9f3cf5a /arch/powerpc | |
| parent | 1ab66d1fbadad86b1f4a9c7857e193af0ee0022c (diff) | |
| download | linux-stable-687da8fce1682c9f1e87530e731189863c588265.tar.gz linux-stable-687da8fce1682c9f1e87530e731189863c588265.tar.bz2 linux-stable-687da8fce1682c9f1e87530e731189863c588265.zip | |
powerpc/prom: Increase minimum RMA size to 512MB
When booting very large systems with a large initrd, we run out of
space early in boot for either RTAS or the flattened device tree (FDT).
Boot fails with messages like:
Could not allocate memory for RTAS
or
No memory for flatten_device_tree (no room)
Increasing the minimum RMA size to 512MB fixes the problem. This
should not have an impact on smaller LPARs (with 256MB memory),
as the firmware will cap the RMA to the memory assigned to the LPAR.
Fix is based on input/discussions with Michael Ellerman. Thanks to
Praveen K. Pandey for testing on a large system.
Reported-by: Praveen K. Pandey <preveen.pandey@in.ibm.com>
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/kernel/prom_init.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c index 1c1b44ec7642..dd8a04f3053a 100644 --- a/arch/powerpc/kernel/prom_init.c +++ b/arch/powerpc/kernel/prom_init.c @@ -815,7 +815,7 @@ struct ibm_arch_vec __cacheline_aligned ibm_architecture_vec = { .virt_base = cpu_to_be32(0xffffffff), .virt_size = cpu_to_be32(0xffffffff), .load_base = cpu_to_be32(0xffffffff), - .min_rma = cpu_to_be32(256), /* 256MB min RMA */ + .min_rma = cpu_to_be32(512), /* 512MB min RMA */ .min_load = cpu_to_be32(0xffffffff), /* full client load */ .min_rma_percent = 0, /* min RMA percentage of total RAM */ .max_pft_size = 48, /* max log_2(hash table size) */ |