From: Xiao Guangrong <guangrong.xiao@linux.intel.com>
To: Igor Mammedov <imammedo@redhat.com>
Cc: ehabkost@redhat.com, kvm@vger.kernel.org, mst@redhat.com,
gleb@kernel.org, mtosatti@redhat.com, qemu-devel@nongnu.org,
stefanha@redhat.com, pbonzini@redhat.com,
dan.j.williams@intel.com, rth@twiddle.net
Subject: Re: [PATCH 5/6] nvdimm acpi: let qemu handle _DSM method
Date: Fri, 8 Jan 2016 12:01:54 +0800 [thread overview]
Message-ID: <568F34B2.9090101@linux.intel.com> (raw)
In-Reply-To: <20160107152228.2676222a@nial.brq.redhat.com>
On 01/07/2016 10:22 PM, Igor Mammedov wrote:
> On Tue, 5 Jan 2016 02:52:07 +0800
> Xiao Guangrong <guangrong.xiao@linux.intel.com> wrote:
>
>> If dsm memory is successfully patched, we let qemu fully emulate
>> the dsm method
>>
>> This patch saves _DSM input parameters into dsm memory, tell dsm
>> memory address to QEMU, then fetch the result from the dsm memory
> you also need to add NVDR._CRS method that would report
> resources used by operation regions.
I can not understand this point, why we need to report the resource
of OperationRegion? It is ACPI internally used anyway.
>
> NVDIMM_COMMON_DSM - probably should be serialized, otherwise
> there is a race risk, when several callers would write to
> control region.
Yes, i did it in patch 6/6, but definitely i should more it to here.
WARNING: multiple messages have this Message-ID (diff)
From: Xiao Guangrong <guangrong.xiao@linux.intel.com>
To: Igor Mammedov <imammedo@redhat.com>
Cc: ehabkost@redhat.com, kvm@vger.kernel.org, mst@redhat.com,
gleb@kernel.org, mtosatti@redhat.com, qemu-devel@nongnu.org,
stefanha@redhat.com, pbonzini@redhat.com,
dan.j.williams@intel.com, rth@twiddle.net
Subject: Re: [Qemu-devel] [PATCH 5/6] nvdimm acpi: let qemu handle _DSM method
Date: Fri, 8 Jan 2016 12:01:54 +0800 [thread overview]
Message-ID: <568F34B2.9090101@linux.intel.com> (raw)
In-Reply-To: <20160107152228.2676222a@nial.brq.redhat.com>
On 01/07/2016 10:22 PM, Igor Mammedov wrote:
> On Tue, 5 Jan 2016 02:52:07 +0800
> Xiao Guangrong <guangrong.xiao@linux.intel.com> wrote:
>
>> If dsm memory is successfully patched, we let qemu fully emulate
>> the dsm method
>>
>> This patch saves _DSM input parameters into dsm memory, tell dsm
>> memory address to QEMU, then fetch the result from the dsm memory
> you also need to add NVDR._CRS method that would report
> resources used by operation regions.
I can not understand this point, why we need to report the resource
of OperationRegion? It is ACPI internally used anyway.
>
> NVDIMM_COMMON_DSM - probably should be serialized, otherwise
> there is a race risk, when several callers would write to
> control region.
Yes, i did it in patch 6/6, but definitely i should more it to here.
next prev parent reply other threads:[~2016-01-08 4:01 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-04 18:52 [PATCH 0/6] NVDIMM ACPI: introduce the framework of QEMU emulated DSM Xiao Guangrong
2016-01-04 18:52 ` [Qemu-devel] " Xiao Guangrong
2016-01-04 18:52 ` [PATCH 1/6] pc: acpi: bump DSDT/SSDT compliance revision to v2 Xiao Guangrong
2016-01-04 18:52 ` [Qemu-devel] " Xiao Guangrong
2016-01-04 18:52 ` [PATCH 2/6] nvdimm acpi: initialize the resource used by NVDIMM ACPI Xiao Guangrong
2016-01-04 18:52 ` [Qemu-devel] " Xiao Guangrong
2016-01-04 18:52 ` [PATCH 3/6] nvdimm acpi: introduce patched dsm memory Xiao Guangrong
2016-01-04 18:52 ` [Qemu-devel] " Xiao Guangrong
2016-01-06 15:23 ` Igor Mammedov
2016-01-06 15:23 ` [Qemu-devel] " Igor Mammedov
2016-01-06 15:39 ` Xiao Guangrong
2016-01-06 15:39 ` [Qemu-devel] " Xiao Guangrong
2016-01-07 11:04 ` Igor Mammedov
2016-01-07 11:04 ` [Qemu-devel] " Igor Mammedov
2016-01-08 3:40 ` Xiao Guangrong
2016-01-08 3:40 ` [Qemu-devel] " Xiao Guangrong
2016-01-08 17:06 ` Igor Mammedov
2016-01-08 17:06 ` [Qemu-devel] " Igor Mammedov
2016-01-04 18:52 ` [PATCH 4/6] acpi: allow using acpi named offset for OperationRegion Xiao Guangrong
2016-01-04 18:52 ` [Qemu-devel] " Xiao Guangrong
2016-01-04 18:52 ` [PATCH 5/6] nvdimm acpi: let qemu handle _DSM method Xiao Guangrong
2016-01-04 18:52 ` [Qemu-devel] " Xiao Guangrong
2016-01-07 14:22 ` Igor Mammedov
2016-01-07 14:22 ` [Qemu-devel] " Igor Mammedov
2016-01-08 4:01 ` Xiao Guangrong [this message]
2016-01-08 4:01 ` Xiao Guangrong
2016-01-08 16:08 ` Igor Mammedov
2016-01-08 16:08 ` [Qemu-devel] " Igor Mammedov
2016-01-04 18:52 ` [PATCH 6/6] nvdimm acpi: emulate dsm method Xiao Guangrong
2016-01-04 18:52 ` [Qemu-devel] " Xiao Guangrong
2016-01-07 14:13 ` [Qemu-devel] [PATCH 0/6] NVDIMM ACPI: introduce the framework of QEMU emulated DSM Igor Mammedov
2016-01-07 14:13 ` Igor Mammedov
2016-01-12 19:02 ` Xiao Guangrong
2016-01-12 19:02 ` Xiao Guangrong
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