powerpc: Expose TSCR via sysfs only on powernv

The TSCR can only be accessed in hypervisor mode.

Fixes: 88b5e12eeb11 ("powerpc: Expose TSCR via sysfs")
Signed-off-by: Cyril Bur <cyrilbur@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Cyril Bur 2018-02-14 14:27:06 +11:00 коммит произвёл Michael Ellerman
Родитель 694a20dae6
Коммит c134f0d57a
1 изменённых файлов: 4 добавлений и 2 удалений

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@ -788,7 +788,8 @@ static int register_cpu_online(unsigned int cpu)
if (cpu_has_feature(CPU_FTR_PPCAS_ARCH_V2)) if (cpu_has_feature(CPU_FTR_PPCAS_ARCH_V2))
device_create_file(s, &dev_attr_pir); device_create_file(s, &dev_attr_pir);
if (cpu_has_feature(CPU_FTR_ARCH_206)) if (cpu_has_feature(CPU_FTR_ARCH_206) &&
!firmware_has_feature(FW_FEATURE_LPAR))
device_create_file(s, &dev_attr_tscr); device_create_file(s, &dev_attr_tscr);
#endif /* CONFIG_PPC64 */ #endif /* CONFIG_PPC64 */
@ -873,7 +874,8 @@ static int unregister_cpu_online(unsigned int cpu)
if (cpu_has_feature(CPU_FTR_PPCAS_ARCH_V2)) if (cpu_has_feature(CPU_FTR_PPCAS_ARCH_V2))
device_remove_file(s, &dev_attr_pir); device_remove_file(s, &dev_attr_pir);
if (cpu_has_feature(CPU_FTR_ARCH_206)) if (cpu_has_feature(CPU_FTR_ARCH_206) &&
!firmware_has_feature(FW_FEATURE_LPAR))
device_remove_file(s, &dev_attr_tscr); device_remove_file(s, &dev_attr_tscr);
#endif /* CONFIG_PPC64 */ #endif /* CONFIG_PPC64 */