| Message ID | 20161210201351.25894-1-christoffer.dall@linaro.org |
|---|---|
| State | New |
| Headers | show |
[+Sudeep] On 10/12/16 20:13, Christoffer Dall wrote: > The GICv2 CPU interface registers span across 8K, not 4K as indicated in > the DT. Only the GICC_DIR register is located after the initial 4K > boundary, leaving a functional system but without support for separately > EOI'ing and deactivating interrupts. > > After this change the system support split priority drop and interrupt > deactivation. > > Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org> > --- > arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts b/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts > index 0205c97..2e0cf39 100644 > --- a/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts > +++ b/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts > @@ -126,7 +126,7 @@ > #address-cells = <0>; > interrupt-controller; > reg = <0 0x2c001000 0 0x1000>, > - <0 0x2c002000 0 0x1000>, > + <0 0x2c002000 0 0x2000>, > <0 0x2c004000 0 0x2000>, > <0 0x2c006000 0 0x2000>; > interrupts = <1 9 0xf04>; > Acked-by: Marc Zyngier <marc.zyngier@arm.com> M. -- Jazz is not dead. It just smells funny... _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
On 12/12/16 17:35, Marc Zyngier wrote: > [+Sudeep] > > On 10/12/16 20:13, Christoffer Dall wrote: >> The GICv2 CPU interface registers span across 8K, not 4K as indicated in >> the DT. Only the GICC_DIR register is located after the initial 4K >> boundary, leaving a functional system but without support for separately >> EOI'ing and deactivating interrupts. >> >> After this change the system support split priority drop and interrupt >> deactivation. >> >> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org> >> --- >> arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts | 2 +- >> 1 file changed, 1 insertion(+), 1 deletion(-) >> >> diff --git a/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts b/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts >> index 0205c97..2e0cf39 100644 >> --- a/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts >> +++ b/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts >> @@ -126,7 +126,7 @@ >> #address-cells = <0>; >> interrupt-controller; >> reg = <0 0x2c001000 0 0x1000>, >> - <0 0x2c002000 0 0x1000>, >> + <0 0x2c002000 0 0x2000>, >> <0 0x2c004000 0 0x2000>, >> <0 0x2c006000 0 0x2000>; >> interrupts = <1 9 0xf04>; >> > > Acked-by: Marc Zyngier <marc.zyngier@arm.com> > Thanks Marc, I see couple of other instances of this like tc2 and rtsm model on arm64. Do they need to be fixed too ? I guess so. If so I will fixup this to patch add tc1. And add another one for rtsm. Also I see loads of gic-400 compatible dts(mainly rockchip and renasas) having just 4k. Are they left like this intentionally ? I remember you fixing most of the DTS when you found this issue initially. -- Regards, Sudeep _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
On 13/12/16 12:16, Sudeep Holla wrote: > > > On 12/12/16 17:35, Marc Zyngier wrote: >> [+Sudeep] >> >> On 10/12/16 20:13, Christoffer Dall wrote: >>> The GICv2 CPU interface registers span across 8K, not 4K as indicated in >>> the DT. Only the GICC_DIR register is located after the initial 4K >>> boundary, leaving a functional system but without support for separately >>> EOI'ing and deactivating interrupts. >>> >>> After this change the system support split priority drop and interrupt >>> deactivation. >>> >>> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org> >>> --- >>> arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts | 2 +- >>> 1 file changed, 1 insertion(+), 1 deletion(-) >>> >>> diff --git a/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts b/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts >>> index 0205c97..2e0cf39 100644 >>> --- a/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts >>> +++ b/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts >>> @@ -126,7 +126,7 @@ >>> #address-cells = <0>; >>> interrupt-controller; >>> reg = <0 0x2c001000 0 0x1000>, >>> - <0 0x2c002000 0 0x1000>, >>> + <0 0x2c002000 0 0x2000>, >>> <0 0x2c004000 0 0x2000>, >>> <0 0x2c006000 0 0x2000>; >>> interrupts = <1 9 0xf04>; >>> >> >> Acked-by: Marc Zyngier <marc.zyngier@arm.com> >> > > Thanks Marc, I see couple of other instances of this like tc2 and rtsm > model on arm64. Do they need to be fixed too ? I guess so. If so I will > fixup this to patch add tc1. And add another one for rtsm. Yes, that'd be good. > Also I see loads of gic-400 compatible dts(mainly rockchip and renasas) > having just 4k. Are they left like this intentionally ? I remember you > fixing most of the DTS when you found this issue initially. I still have these patches stashed somewhere (I remember sunxi being one of the offender as well). I also need to come up with a software workaround enabling the 8kB region with the old DT (because it is likely that KVM will stop working on them if we merge Christoffer's timer patches). Thanks, M. -- Jazz is not dead. It just smells funny... _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
diff --git a/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts b/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts index 0205c97..2e0cf39 100644 --- a/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts +++ b/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts @@ -126,7 +126,7 @@ #address-cells = <0>; interrupt-controller; reg = <0 0x2c001000 0 0x1000>, - <0 0x2c002000 0 0x1000>, + <0 0x2c002000 0 0x2000>, <0 0x2c004000 0 0x2000>, <0 0x2c006000 0 0x2000>; interrupts = <1 9 0xf04>;
The GICv2 CPU interface registers span across 8K, not 4K as indicated in the DT. Only the GICC_DIR register is located after the initial 4K boundary, leaving a functional system but without support for separately EOI'ing and deactivating interrupts. After this change the system support split priority drop and interrupt deactivation. Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org> --- arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) -- 2.9.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel