diff options
Diffstat (limited to 'arch/powerpc/platforms/pseries/setup.c')
| -rw-r--r-- | arch/powerpc/platforms/pseries/setup.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c index e1a5b8a32d2..5d97553e5c2 100644 --- a/arch/powerpc/platforms/pseries/setup.c +++ b/arch/powerpc/platforms/pseries/setup.c @@ -367,6 +367,36 @@ static void pSeries_idle(void) } } +/* + * Enable relocation on during exceptions. This has partition wide scope and + * may take a while to complete, if it takes longer than one second we will + * just give up rather than wasting any more time on this - if that turns out + * to ever be a problem in practice we can move this into a kernel thread to + * finish off the process later in boot. + */ +static int __init pSeries_enable_reloc_on_exc(void) +{ + long rc; + unsigned int delay, total_delay = 0; + + while (1) { + rc = enable_reloc_on_exceptions(); + if (!H_IS_LONG_BUSY(rc)) + return rc; + + delay = get_longbusy_msecs(rc); + total_delay += delay; + if (total_delay > 1000) { + pr_warn("Warning: Giving up waiting to enable " + "relocation on exceptions (%u msec)!\n", + total_delay); + return rc; + } + + mdelay(delay); + } +} + static void __init pSeries_setup_arch(void) { panic_timeout = 10; @@ -402,6 +432,14 @@ static void __init pSeries_setup_arch(void) ppc_md.enable_pmcs = pseries_lpar_enable_pmcs; else ppc_md.enable_pmcs = power4_enable_pmcs; + + if (firmware_has_feature(FW_FEATURE_SET_MODE)) { + long rc; + if ((rc = pSeries_enable_reloc_on_exc()) != H_SUCCESS) { + pr_warn("Unable to enable relocation on exceptions: " + "%ld\n", rc); + } + } } static int __init pSeries_init_panel(void) |