We only set CNTFRQ in arch_timer_init for the boot CPU. But this has to happen for all cores.
Fixing this resolves problems of KVM with emulating the generic timer/counter.
Signed-off-by: Jan Kiszka jan.kiszka@siemens.com --- arch/arm/cpu/armv7/tegra-common/psci.S | 13 +++++++++++++ 1 file changed, 13 insertions(+)
diff --git a/arch/arm/cpu/armv7/tegra-common/psci.S b/arch/arm/cpu/armv7/tegra-common/psci.S index b7501fb..119c246 100644 --- a/arch/arm/cpu/armv7/tegra-common/psci.S +++ b/arch/arm/cpu/armv7/tegra-common/psci.S @@ -51,12 +51,25 @@ ENTRY(psci_arch_init)
mrc p15, 0, r4, c0, c0, 5 @ MPIDR and r4, r4, #7 @ number of CPUs in cluster + + adr r5, _sys_clock_freq + cmp r4, #0 + + mrceq p15, 0, r7, c14, c0, 0 @ read CNTFRQ from CPU0 + streq r7, [r5] + + ldrne r7, [r5] + mcrne p15, 0, r7, c14, c0, 0 @ write CNTFRQ to CPU1..3 + bl psci_get_cpu_stack_top mov sp, r5
bx r6 ENDPROC(psci_arch_init)
+_sys_clock_freq: + .word + ENTRY(psci_cpu_off) bl psci_cpu_off_common