Re: [V4 PATCH 2/6] arm64 : Introduce support for ACPI _CCA object

2015-05-20 Thread Suravee Suthikulanit
On 5/20/2015 5:03 AM, Catalin Marinas wrote: On Fri, May 15, 2015 at 04:23:10PM -0500, Suravee Suthikulpanit wrote: From http://www.uefi.org/sites/default/files/resources/ACPI_6.0.pdf, section 6.2.17 _CCA states that ARM platforms require ACPI _CCA object to be specified for DMA-cabpable device

Re: [V4 PATCH 2/6] arm64 : Introduce support for ACPI _CCA object

2015-05-20 Thread Catalin Marinas
On Fri, May 15, 2015 at 04:23:10PM -0500, Suravee Suthikulpanit wrote: > From http://www.uefi.org/sites/default/files/resources/ACPI_6.0.pdf, > section 6.2.17 _CCA states that ARM platforms require ACPI _CCA > object to be specified for DMA-cabpable devices. This patch introduces > ACPI_MUST_HAVE_C

Re: [V4 PATCH 2/6] arm64 : Introduce support for ACPI _CCA object

2015-05-16 Thread Suravee Suthikulpanit
Hi Paul, On 5/16/15 06:48, Paul Bolle wrote: Just a nit regarding the commit explanation. On Fri, 2015-05-15 at 16:23 -0500, Suravee Suthikulpanit wrote: From http://www.uefi.org/sites/default/files/resources/ACPI_6.0.pdf, section 6.2.17 _CCA states that ARM platforms require ACPI _CCA object

Re: [V4 PATCH 2/6] arm64 : Introduce support for ACPI _CCA object

2015-05-16 Thread Paul Bolle
Just a nit regarding the commit explanation. On Fri, 2015-05-15 at 16:23 -0500, Suravee Suthikulpanit wrote: > From http://www.uefi.org/sites/default/files/resources/ACPI_6.0.pdf, > section 6.2.17 _CCA states that ARM platforms require ACPI _CCA > object to be specified for DMA-cabpable devices. T

[V4 PATCH 2/6] arm64 : Introduce support for ACPI _CCA object

2015-05-15 Thread Suravee Suthikulpanit
>From http://www.uefi.org/sites/default/files/resources/ACPI_6.0.pdf, section 6.2.17 _CCA states that ARM platforms require ACPI _CCA object to be specified for DMA-cabpable devices. This patch introduces ACPI_MUST_HAVE_CCA in arm64 Kconfig to specify such requirement. In case _CCA is missing, arm