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 Reviewed-by: Tom Rini trini@konsulko.com Reviewed-by: Thierry Reding treding@nvidia.com Tested-by: Thierry Reding treding@nvidia.com Tested-by: Ian Campbell ijc@hellion.org.uk --- arch/arm/mach-tegra/psci.S | 13 +++++++++++++ 1 file changed, 13 insertions(+)
diff --git a/arch/arm/mach-tegra/psci.S b/arch/arm/mach-tegra/psci.S index e4733e6..b836da1 100644 --- a/arch/arm/mach-tegra/psci.S +++ b/arch/arm/mach-tegra/psci.S @@ -51,12 +51,25 @@ ENTRY(psci_arch_init) str r5, [r4]
bl psci_get_cpu_id @ CPU ID => r0 + + adr r5, _sys_clock_freq + cmp r0, #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 @ stack top => r0 mov sp, r0
bx r6 ENDPROC(psci_arch_init)
+_sys_clock_freq: + .word 0 + ENTRY(psci_cpu_off) bl psci_cpu_off_common