diff options
Diffstat (limited to 'arch/powerpc/platforms/pseries/setup.c')
| -rw-r--r-- | arch/powerpc/platforms/pseries/setup.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c index 4a2cd48b21f6..a3a69658a6ec 100644 --- a/arch/powerpc/platforms/pseries/setup.c +++ b/arch/powerpc/platforms/pseries/setup.c @@ -414,16 +414,20 @@ static int __init pSeries_init_panel(void) } machine_arch_initcall(pseries, pSeries_init_panel); -static int pseries_set_dabr(unsigned long dabr) +static int pseries_set_dabr(unsigned long dabr, unsigned long dabrx) { return plpar_hcall_norets(H_SET_DABR, dabr); } -static int pseries_set_xdabr(unsigned long dabr) +static int pseries_set_xdabr(unsigned long dabr, unsigned long dabrx) { - /* We want to catch accesses from kernel and userspace */ - return plpar_hcall_norets(H_SET_XDABR, dabr, - H_DABRX_KERNEL | H_DABRX_USER); + /* Have to set at least one bit in the DABRX according to PAPR */ + if (dabrx == 0 && dabr == 0) + dabrx = DABRX_USER; + /* PAPR says we can only set kernel and user bits */ + dabrx &= H_DABRX_KERNEL | H_DABRX_USER; + + return plpar_hcall_norets(H_SET_XDABR, dabr, dabrx); } #define CMO_CHARACTERISTICS_TOKEN 44 |