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Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc

Browse Source 
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc/pseries: Disable VPNH feature
  powerpc/iseries: Fix early init access to lppaca
This commit is contained in:
Linus Torvalds 2011-03-09 16:46:06 -08:00
commit 35d34df711
5 changed files with 22 additions and 18 deletions
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16
arch/powerpc/include/asm/lppaca.h
View File

@ -33,9 +33,25 @@
//
//----------------------------------------------------------------------------
#include <linux/cache.h>
#include <linux/threads.h>
#include <asm/types.h>
#include <asm/mmu.h>
/*
* We only have to have statically allocated lppaca structs on
* legacy iSeries, which supports at most 64 cpus.
*/
#ifdef CONFIG_PPC_ISERIES
#if NR_CPUS < 64
#define NR_LPPACAS NR_CPUS
#else
#define NR_LPPACAS 64
#endif
#else /* not iSeries */
#define NR_LPPACAS 1
#endif
/* The Hypervisor barfs if the lppaca crosses a page boundary. A 1k
* alignment is sufficient to prevent this */
struct lppaca {

14
arch/powerpc/kernel/paca.c
View File

@ -26,20 +26,6 @@ extern unsigned long __toc_start;
#ifdef CONFIG_PPC_BOOK3S
/*
* We only have to have statically allocated lppaca structs on
* legacy iSeries, which supports at most 64 cpus.
*/
#ifdef CONFIG_PPC_ISERIES
#if NR_CPUS < 64
#define NR_LPPACAS NR_CPUS
#else
#define NR_LPPACAS 64
#endif
#else /* not iSeries */
#define NR_LPPACAS 1
#endif
/*
* The structure which the hypervisor knows about - this structure
* should not cross a page boundary. The vpa_init/register_vpa call

3
arch/powerpc/mm/numa.c
View File

@ -1516,7 +1516,8 @@ int start_topology_update(void)
{
int rc = 0;
if (firmware_has_feature(FW_FEATURE_VPHN) &&
/* Disabled until races with load balancing are fixed */
if (0 && firmware_has_feature(FW_FEATURE_VPHN) &&
get_lppaca()->shared_proc) {
vphn_enabled = 1;
setup_cpu_associativity_change_counters();

6
arch/powerpc/platforms/iseries/dt.c
View File

@ -242,8 +242,8 @@ static void __init dt_cpus(struct iseries_flat_dt *dt)
pft_size[0] = 0; /* NUMA CEC cookie, 0 for non NUMA */
pft_size[1] = __ilog2(HvCallHpt_getHptPages() * HW_PAGE_SIZE);
for (i = 0; i < NR_CPUS; i++) {
if (lppaca_of(i).dyn_proc_status >= 2)
for (i = 0; i < NR_LPPACAS; i++) {
if (lppaca[i].dyn_proc_status >= 2)
continue;
snprintf(p, 32 - (p - buf), "@%d", i);
@ -251,7 +251,7 @@ static void __init dt_cpus(struct iseries_flat_dt *dt)
dt_prop_str(dt, "device_type", device_type_cpu);
index = lppaca_of(i).dyn_hv_phys_proc_index;
index = lppaca[i].dyn_hv_phys_proc_index;
d = &xIoHriProcessorVpd[index];
dt_prop_u32(dt, "i-cache-size", d->xInstCacheSize * 1024);

1
arch/powerpc/platforms/iseries/setup.c
View File

@ -680,6 +680,7 @@ void * __init iSeries_early_setup(void)
* on but calling this function multiple times is fine.
*/
identify_cpu(0, mfspr(SPRN_PVR));
initialise_paca(&boot_paca, 0);
powerpc_firmware_features |= FW_FEATURE_ISERIES;
powerpc_firmware_features |= FW_FEATURE_LPAR;