On 13.04.2026 14:30, Bernhard Beschow wrote:
+ qemu-stable
Hi!
A bit late reply, but here it goes.
What do you recommend for 10.0.x series and this patch?
This change (commit 774e6f5c15) contextually depends on a
previous commit in the same area, v10.0.0-1542-gea585b1022
"hw/ppc/e500: Move clock and TB frequency to machine class".
Should I pick both to 10.0.x, or neither, or modify 774e6f5c15
to apply without ea585b1022? Do these patches have effect on
migration stream?
What do yo think?
Thanks,
/mjt
Am 11. April 2026 15:45:35 UTC schrieb Vivien LEGER <[email protected]>:
The bus-frequency property in the CPU FDT node was hardcoded to 0.
This is incorrect - it should reflect the actual platform bus clock
frequency, as firmware and RTOSes use it to derive peripheral clock
rates.
Notably, the RTEMS QorIQ BSP uses bus-frequency to program the MPIC
global timer interval. With bus-frequency=0, the timer interval
overflows to ~85 seconds, preventing any clock interrupts from firing.
Fix by adding a bus_freq field to PPCE500MachineClass and using it in
the FDT generator. Set bus_freq = PLATFORM_CLK_FREQ_HZ (400MHz) for
existing machines, matching the existing clock_freq value.
Signed-off-by: Vivien LEGER <[email protected]>
---
hw/ppc/e500.c | 2 +-
hw/ppc/e500.h | 1 +
hw/ppc/e500plat.c | 1 +
hw/ppc/mpc8544ds.c | 1 +
4 files changed, 4 insertions(+), 1 deletion(-)
