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| author | Christoffer Dall <christoffer.dall@linaro.org> | 2016-01-21 14:15:07 +0000 |
|---|---|---|
| committer | Timothy Pearson <tpearson@raptorengineering.com> | 2019-11-29 19:28:26 -0600 |
| commit | 6527f66b0f24b543eeaff8e21a043bbe7714e046 (patch) | |
| tree | 9538d266d9ad6f3830d23663ecb93195f73281b4 /hw | |
| parent | 26b59fb4e1006d30bff6baaf341c49bb74b4b06d (diff) | |
| download | hqemu-6527f66b0f24b543eeaff8e21a043bbe7714e046.zip hqemu-6527f66b0f24b543eeaff8e21a043bbe7714e046.tar.gz | |
hw/arm/virt: Add always-on property to the virt board timer
The virt board has an arch timer, which is always on. Emit the
"always-on" property to indicate to Linux that it can switch off the
periodic timer and reduces the amount of interrupts injected into a
guest.
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Message-id: 1453204158-11412-1-git-send-email-christoffer.dall@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/arm/virt.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/hw/arm/virt.c b/hw/arm/virt.c index 134f452..15658f4 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -293,6 +293,7 @@ static void fdt_add_timer_nodes(const VirtBoardInfo *vbi, int gictype) qemu_fdt_setprop_string(vbi->fdt, "/timer", "compatible", "arm,armv7-timer"); } + qemu_fdt_setprop(vbi->fdt, "/timer", "always-on", NULL, 0); qemu_fdt_setprop_cells(vbi->fdt, "/timer", "interrupts", GIC_FDT_IRQ_TYPE_PPI, ARCH_TIMER_S_EL1_IRQ, irqflags, GIC_FDT_IRQ_TYPE_PPI, ARCH_TIMER_NS_EL1_IRQ, irqflags, |
