| Message ID | 1471527871-15540-1-git-send-email-tim.gardner@canonical.com |
|---|---|
| State | New |
| Headers | show |
On 18/08/16 14:44, Tim Gardner wrote: > From: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> > > BugLink: http://bugs.launchpad.net/bugs/1614309 > > When trying to boot large kernel and initrd images on large systems > (with hundreds of CPUs and Terabytes of memory), we sometimes run out > of memory for the flattened device tree (FDT). > > Increase the memory allocated for the Real Mode Area (RMA) to 512MB to > allow more room for the FDT. > > Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> > Signed-off-by: Tim Gardner <tim.gardner@canonical.com> > --- > arch/powerpc/kernel/prom_init.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c > index b7e86e0..6486954 100644 > --- a/arch/powerpc/kernel/prom_init.c > +++ b/arch/powerpc/kernel/prom_init.c > @@ -678,7 +678,7 @@ unsigned char ibm_architecture_vec[] = { > W(0xffffffff), /* virt_base */ > W(0xffffffff), /* virt_size */ > W(0xffffffff), /* load_base */ > - W(256), /* 256MB min RMA */ > + W(512), /* 512MB min RMA */ > W(0xffffffff), /* full client load */ > 0, /* min RMA percentage of total RAM */ > 48, /* max log_2(hash table size) */ > Looks sane to me. Acked-by: Colin Ian King <colin.king@canonical.com>
Of course this is an 'UBUNTU: SAUCE:' patch On 08/18/2016 07:44 AM, Tim Gardner wrote: > From: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> > > BugLink: http://bugs.launchpad.net/bugs/1614309 > > When trying to boot large kernel and initrd images on large systems > (with hundreds of CPUs and Terabytes of memory), we sometimes run out > of memory for the flattened device tree (FDT). > > Increase the memory allocated for the Real Mode Area (RMA) to 512MB to > allow more room for the FDT. > > Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> > Signed-off-by: Tim Gardner <tim.gardner@canonical.com> > --- > arch/powerpc/kernel/prom_init.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c > index b7e86e0..6486954 100644 > --- a/arch/powerpc/kernel/prom_init.c > +++ b/arch/powerpc/kernel/prom_init.c > @@ -678,7 +678,7 @@ unsigned char ibm_architecture_vec[] = { > W(0xffffffff), /* virt_base */ > W(0xffffffff), /* virt_size */ > W(0xffffffff), /* load_base */ > - W(256), /* 256MB min RMA */ > + W(512), /* 512MB min RMA */ > W(0xffffffff), /* full client load */ > 0, /* min RMA percentage of total RAM */ > 48, /* max log_2(hash table size) */ >
Applied (with "UBUNTU: SAUCE:") to Xenial. -Kamal
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c index b7e86e0..6486954 100644 --- a/arch/powerpc/kernel/prom_init.c +++ b/arch/powerpc/kernel/prom_init.c @@ -678,7 +678,7 @@ unsigned char ibm_architecture_vec[] = { W(0xffffffff), /* virt_base */ W(0xffffffff), /* virt_size */ W(0xffffffff), /* load_base */ - W(256), /* 256MB min RMA */ + W(512), /* 512MB min RMA */ W(0xffffffff), /* full client load */ 0, /* min RMA percentage of total RAM */ 48, /* max log_2(hash table size) */