Re: [RFC PATCH 4/5] acpi/hmat: Register special purpose memory as a device

2019-04-09 Thread Dan Williams
On Tue, Apr 9, 2019 at 5:13 AM Christoph Hellwig wrote: > > On Thu, Apr 04, 2019 at 12:08:49PM -0700, Dan Williams wrote: > > Memory that has been tagged EFI_SPECIAL_PURPOSE, and has performance > > properties described by the ACPI HMAT is expected to have an application > > specific consumer. > >

Re: [RFC PATCH 4/5] acpi/hmat: Register special purpose memory as a device

2019-04-09 Thread Christoph Hellwig
On Thu, Apr 04, 2019 at 12:08:49PM -0700, Dan Williams wrote: > Memory that has been tagged EFI_SPECIAL_PURPOSE, and has performance > properties described by the ACPI HMAT is expected to have an application > specific consumer. > > Those consumers may want 100% of the memory capacity to be reserv

Re: [RFC PATCH 4/5] acpi/hmat: Register special purpose memory as a device

2019-04-05 Thread Jonathan Cameron
On Fri, 5 Apr 2019 09:56:22 -0700 Dan Williams wrote: > On Fri, Apr 5, 2019 at 9:24 AM Jonathan Cameron > wrote: > > > > On Fri, 5 Apr 2019 08:43:03 -0700 > > Dan Williams wrote: > > > > > On Fri, Apr 5, 2019 at 4:19 AM Jonathan Cameron > > > wrote: > > > > > > > > On Thu, 4 Apr 2019 12:08

Re: [RFC PATCH 4/5] acpi/hmat: Register special purpose memory as a device

2019-04-05 Thread Dan Williams
On Fri, Apr 5, 2019 at 9:24 AM Jonathan Cameron wrote: > > On Fri, 5 Apr 2019 08:43:03 -0700 > Dan Williams wrote: > > > On Fri, Apr 5, 2019 at 4:19 AM Jonathan Cameron > > wrote: > > > > > > On Thu, 4 Apr 2019 12:08:49 -0700 > > > Dan Williams wrote: > > > > > > > Memory that has been tagged E

Re: [RFC PATCH 4/5] acpi/hmat: Register special purpose memory as a device

2019-04-05 Thread Jonathan Cameron
On Fri, 5 Apr 2019 08:43:03 -0700 Dan Williams wrote: > On Fri, Apr 5, 2019 at 4:19 AM Jonathan Cameron > wrote: > > > > On Thu, 4 Apr 2019 12:08:49 -0700 > > Dan Williams wrote: > > > > > Memory that has been tagged EFI_SPECIAL_PURPOSE, and has performance > > > properties described by the A

Re: [RFC PATCH 4/5] acpi/hmat: Register special purpose memory as a device

2019-04-05 Thread Dan Williams
On Fri, Apr 5, 2019 at 4:19 AM Jonathan Cameron wrote: > > On Thu, 4 Apr 2019 12:08:49 -0700 > Dan Williams wrote: > > > Memory that has been tagged EFI_SPECIAL_PURPOSE, and has performance > > properties described by the ACPI HMAT is expected to have an application > > specific consumer. > > > >

Re: [RFC PATCH 4/5] acpi/hmat: Register special purpose memory as a device

2019-04-05 Thread Jonathan Cameron
On Thu, 4 Apr 2019 12:08:49 -0700 Dan Williams wrote: > Memory that has been tagged EFI_SPECIAL_PURPOSE, and has performance > properties described by the ACPI HMAT is expected to have an application > specific consumer. > > Those consumers may want 100% of the memory capacity to be reserved fro

[RFC PATCH 4/5] acpi/hmat: Register special purpose memory as a device

2019-04-04 Thread Dan Williams
Memory that has been tagged EFI_SPECIAL_PURPOSE, and has performance properties described by the ACPI HMAT is expected to have an application specific consumer. Those consumers may want 100% of the memory capacity to be reserved from any usage by the kernel. By default, with this enabling, a platf