Re: [Xen-devel] [PATCH] xen: arm: X-Gene Storm check GIC DIST address for EOI quirk

2015-04-16 Thread Pranavkumar Sawargaonkar
Hi Ian, On 15 April 2015 at 21:46, Ian Campbell ian.campb...@citrix.com wrote: On Tue, 2015-04-07 at 11:29 +0100, Julien Grall wrote: This would avoid to have this loop and rely on there is always only one interrupt controller in the DT. That is true, however we do know that on this SoC

Re: [Xen-devel] [PATCH] xen: arm: X-Gene Storm check GIC DIST address for EOI quirk

2015-04-15 Thread Ian Campbell
On Tue, 2015-04-07 at 11:29 +0100, Julien Grall wrote: This would avoid to have this loop and rely on there is always only one interrupt controller in the DT. That is true, however we do know that on this SoC there is only one GIC, so it might be acceptable to rely on this knowledge:

Re: [Xen-devel] [PATCH] xen: arm: X-Gene Storm check GIC DIST address for EOI quirk

2015-04-13 Thread Pranavkumar Sawargaonkar
On 8 April 2015 at 13:58, Christoffer Dall christoffer.d...@linaro.org wrote: Hi Pranav, On Mon, Apr 06, 2015 at 02:24:01PM +0530, Pranavkumar Sawargaonkar wrote: In old X-Gene Storm firmware and DT, secure mode addresses have been mentioned in GICv2 node. In this case maintenance interrupt

Re: [Xen-devel] [PATCH] xen: arm: X-Gene Storm check GIC DIST address for EOI quirk

2015-04-08 Thread Christoffer Dall
Hi Pranav, On Mon, Apr 06, 2015 at 02:24:01PM +0530, Pranavkumar Sawargaonkar wrote: In old X-Gene Storm firmware and DT, secure mode addresses have been mentioned in GICv2 node. In this case maintenance interrupt is used instead of EOI HW method. This patch checks the GIC Distributor Base

Re: [Xen-devel] [PATCH] xen: arm: X-Gene Storm check GIC DIST address for EOI quirk

2015-04-07 Thread Stefano Stabellini
On Mon, 6 Apr 2015, Julien Grall wrote: Hi Pranav, Thank you for the patch. On 06/04/2015 10:54, Pranavkumar Sawargaonkar wrote: In old X-Gene Storm firmware and DT, secure mode addresses have been mentioned in GICv2 node. In this case maintenance interrupt is used instead of EOI HW

Re: [Xen-devel] [PATCH] xen: arm: X-Gene Storm check GIC DIST address for EOI quirk

2015-04-07 Thread Julien Grall
Hi Stefano, On 07/04/2015 10:40, Stefano Stabellini wrote: On Mon, 6 Apr 2015, Julien Grall wrote: Hi Pranav, Thank you for the patch. On 06/04/2015 10:54, Pranavkumar Sawargaonkar wrote: In old X-Gene Storm firmware and DT, secure mode addresses have been mentioned in GICv2 node. In this

Re: [Xen-devel] [PATCH] xen: arm: X-Gene Storm check GIC DIST address for EOI quirk

2015-04-06 Thread Julien Grall
Hi Pranav, Thank you for the patch. On 06/04/2015 10:54, Pranavkumar Sawargaonkar wrote: In old X-Gene Storm firmware and DT, secure mode addresses have been mentioned in GICv2 node. In this case maintenance interrupt is used instead of EOI HW method. This patch checks the GIC Distributor

[Xen-devel] [PATCH] xen: arm: X-Gene Storm check GIC DIST address for EOI quirk

2015-04-06 Thread Pranavkumar Sawargaonkar
In old X-Gene Storm firmware and DT, secure mode addresses have been mentioned in GICv2 node. In this case maintenance interrupt is used instead of EOI HW method. This patch checks the GIC Distributor Base Address to enable EOI quirk for old firmware. Ref: