From: Elliot Berman <quic_eberman@quicinc.com>
To: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>,
Alex Elder <elder@linaro.org>,
Prakruthi Deepak Heragu <quic_pheragu@quicinc.com>
Cc: Murali Nalajala <quic_mnalajal@quicinc.com>,
Trilok Soni <quic_tsoni@quicinc.com>,
Srivatsa Vaddagiri <quic_svaddagi@quicinc.com>,
Carl van Schaik <quic_cvanscha@quicinc.com>,
Dmitry Baryshkov <dmitry.baryshkov@linaro.org>,
Bjorn Andersson <andersson@kernel.org>,
"Konrad Dybcio" <konrad.dybcio@linaro.org>,
Arnd Bergmann <arnd@arndb.de>,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Jonathan Corbet <corbet@lwn.net>,
Bagas Sanjaya <bagasdotme@gmail.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Jassi Brar <jassisinghbrar@gmail.com>,
<linux-arm-msm@vger.kernel.org>, <devicetree@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <linux-doc@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH v10 15/26] gunyah: rsc_mgr: Add platform ops on mem_lend/mem_reclaim
Date: Tue, 21 Feb 2023 13:22:51 -0800 [thread overview]
Message-ID: <7aa025a1-b211-f04c-9169-236102fe27fe@quicinc.com> (raw)
In-Reply-To: <963d84e8-7b91-c278-1978-4e73d73f7c6f@linaro.org>
On 2/21/2023 6:51 AM, Srinivas Kandagatla wrote:
>
>
> On 14/02/2023 21:24, Elliot Berman wrote:
[snip]
>> +
>> +static struct gunyah_rm_platform_ops *rm_platform_ops;
>> +static DECLARE_RWSEM(rm_platform_ops_lock);
>
> Why do we need this read/write lock or this global rm_platform_ops here,
> AFAIU, there will be only one instance of platform_ops per platform.
>
> This should be a core part of the gunyah and its driver early setup,
> that should give us pretty much lock less behaviour.
>
> We should be able to determine by Hypervisor UUID that its on Qualcomm
> platform or not, during early gunyah setup which should help us setup
> the platfrom ops accordingly.
>
> This should also help cleanup some of the gunyah code that was added
> futher down in this patchset.
I'm guessing the direction to take is:
config GUNYAH
select QCOM_SCM if ARCH_QCOM
and have vm_mgr call directly into qcom_scm driver if the UID matches?
We have an Android requirement to enable CONFIG_GUNYAH=y and
CONFIG_QCOM_SCM=m, but it wouldn't be possible with this design. The
platform hooks implementation allows GUNYAH and QCOM_SCM to be enabled
without setting lower bound of the other.
- Elliot
WARNING: multiple messages have this Message-ID (diff)
From: Elliot Berman <quic_eberman@quicinc.com>
To: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>,
Alex Elder <elder@linaro.org>,
Prakruthi Deepak Heragu <quic_pheragu@quicinc.com>
Cc: Murali Nalajala <quic_mnalajal@quicinc.com>,
Trilok Soni <quic_tsoni@quicinc.com>,
Srivatsa Vaddagiri <quic_svaddagi@quicinc.com>,
Carl van Schaik <quic_cvanscha@quicinc.com>,
Dmitry Baryshkov <dmitry.baryshkov@linaro.org>,
Bjorn Andersson <andersson@kernel.org>,
"Konrad Dybcio" <konrad.dybcio@linaro.org>,
Arnd Bergmann <arnd@arndb.de>,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Jonathan Corbet <corbet@lwn.net>,
Bagas Sanjaya <bagasdotme@gmail.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Jassi Brar <jassisinghbrar@gmail.com>,
<linux-arm-msm@vger.kernel.org>, <devicetree@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <linux-doc@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH v10 15/26] gunyah: rsc_mgr: Add platform ops on mem_lend/mem_reclaim
Date: Tue, 21 Feb 2023 13:22:51 -0800 [thread overview]
Message-ID: <7aa025a1-b211-f04c-9169-236102fe27fe@quicinc.com> (raw)
In-Reply-To: <963d84e8-7b91-c278-1978-4e73d73f7c6f@linaro.org>
On 2/21/2023 6:51 AM, Srinivas Kandagatla wrote:
>
>
> On 14/02/2023 21:24, Elliot Berman wrote:
[snip]
>> +
>> +static struct gunyah_rm_platform_ops *rm_platform_ops;
>> +static DECLARE_RWSEM(rm_platform_ops_lock);
>
> Why do we need this read/write lock or this global rm_platform_ops here,
> AFAIU, there will be only one instance of platform_ops per platform.
>
> This should be a core part of the gunyah and its driver early setup,
> that should give us pretty much lock less behaviour.
>
> We should be able to determine by Hypervisor UUID that its on Qualcomm
> platform or not, during early gunyah setup which should help us setup
> the platfrom ops accordingly.
>
> This should also help cleanup some of the gunyah code that was added
> futher down in this patchset.
I'm guessing the direction to take is:
config GUNYAH
select QCOM_SCM if ARCH_QCOM
and have vm_mgr call directly into qcom_scm driver if the UID matches?
We have an Android requirement to enable CONFIG_GUNYAH=y and
CONFIG_QCOM_SCM=m, but it wouldn't be possible with this design. The
platform hooks implementation allows GUNYAH and QCOM_SCM to be enabled
without setting lower bound of the other.
- Elliot
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linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2023-02-21 21:23 UTC|newest]
Thread overview: 222+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-14 21:12 [PATCH v10 00/26] Drivers for Gunyah hypervisor Elliot Berman
2023-02-14 21:12 ` Elliot Berman
2023-02-14 21:12 ` [PATCH v10 01/26] docs: gunyah: Introduce Gunyah Hypervisor Elliot Berman
2023-02-14 21:12 ` Elliot Berman
2023-02-23 23:41 ` Alex Elder
2023-02-23 23:41 ` Alex Elder
2023-03-01 0:00 ` Elliot Berman
2023-03-01 0:00 ` Elliot Berman
2023-02-14 21:12 ` [PATCH v10 02/26] dt-bindings: Add binding for gunyah hypervisor Elliot Berman
2023-02-14 21:12 ` Elliot Berman
2023-02-14 21:12 ` [PATCH v10 03/26] gunyah: Common types and error codes for Gunyah hypercalls Elliot Berman
2023-02-14 21:12 ` Elliot Berman
2023-02-23 21:58 ` Alex Elder
2023-02-23 21:58 ` Alex Elder
2023-03-02 1:40 ` Elliot Berman
2023-03-02 1:40 ` Elliot Berman
2023-03-02 7:18 ` Arnd Bergmann
2023-03-02 7:18 ` Arnd Bergmann
2023-02-14 21:12 ` [PATCH v10 04/26] virt: gunyah: Add hypercalls to identify Gunyah Elliot Berman
2023-02-14 21:12 ` Elliot Berman
2023-02-20 13:59 ` Srinivas Kandagatla
2023-02-20 13:59 ` Srinivas Kandagatla
2023-02-24 0:09 ` Alex Elder
2023-02-24 0:09 ` Alex Elder
2023-03-02 1:21 ` Elliot Berman
2023-03-02 1:21 ` Elliot Berman
2023-02-14 21:18 ` Elliot Berman
2023-02-14 21:18 ` Elliot Berman
2023-02-14 21:21 ` [PATCH v10 05/26] virt: gunyah: Identify hypervisor version Elliot Berman
2023-02-14 21:21 ` Elliot Berman
2023-02-14 21:23 ` [PATCH v10 06/26] virt: gunyah: msgq: Add hypercalls to send and receive messages Elliot Berman
2023-02-14 21:23 ` Elliot Berman
2023-02-24 0:15 ` Alex Elder
2023-02-24 0:15 ` Alex Elder
2023-02-24 21:24 ` Elliot Berman
2023-02-24 21:24 ` Elliot Berman
2023-02-14 21:23 ` [PATCH v10 07/26] mailbox: Add Gunyah message queue mailbox Elliot Berman
2023-02-14 21:23 ` Elliot Berman
2023-02-16 4:07 ` kernel test robot
2023-02-16 4:07 ` kernel test robot
2023-02-20 13:59 ` Srinivas Kandagatla
2023-02-20 13:59 ` Srinivas Kandagatla
2023-02-23 0:15 ` Elliot Berman
2023-02-23 0:15 ` Elliot Berman
2023-02-23 10:25 ` Srinivas Kandagatla
2023-02-23 10:25 ` Srinivas Kandagatla
2023-02-23 23:15 ` Elliot Berman
2023-02-23 23:15 ` Elliot Berman
2023-02-24 7:49 ` Srinivas Kandagatla
2023-02-24 7:49 ` Srinivas Kandagatla
2023-02-23 18:24 ` Alex Elder
2023-02-23 18:24 ` Alex Elder
2023-02-23 21:11 ` Alex Elder
2023-02-23 21:11 ` Alex Elder
2023-02-24 21:57 ` Elliot Berman
2023-02-24 21:57 ` Elliot Berman
2023-02-14 21:23 ` [PATCH v10 08/26] gunyah: rsc_mgr: Add resource manager RPC core Elliot Berman
2023-02-14 21:23 ` Elliot Berman
2023-02-16 6:43 ` Greg Kroah-Hartman
2023-02-16 6:43 ` Greg Kroah-Hartman
2023-02-16 17:40 ` Elliot Berman
2023-02-16 17:40 ` Elliot Berman
2023-02-17 7:37 ` Greg Kroah-Hartman
2023-02-17 7:37 ` Greg Kroah-Hartman
2023-02-22 22:52 ` Elliot Berman
2023-02-22 22:52 ` Elliot Berman
2023-02-20 18:10 ` Srinivas Kandagatla
2023-02-20 18:10 ` Srinivas Kandagatla
2023-02-22 23:18 ` Elliot Berman
2023-02-22 23:18 ` Elliot Berman
2023-02-23 10:29 ` Srinivas Kandagatla
2023-02-23 10:29 ` Srinivas Kandagatla
2023-02-23 23:13 ` Elliot Berman
2023-02-23 23:13 ` Elliot Berman
2023-02-28 0:52 ` Alex Elder
2023-02-28 0:52 ` Alex Elder
2023-02-28 22:49 ` Elliot Berman
2023-02-28 22:49 ` Elliot Berman
2023-02-23 23:28 ` Alex Elder
2023-02-23 23:28 ` Alex Elder
2023-02-24 22:39 ` Elliot Berman
2023-02-24 22:39 ` Elliot Berman
2023-02-14 21:23 ` [PATCH v10 09/26] gunyah: rsc_mgr: Add VM lifecycle RPC Elliot Berman
2023-02-14 21:23 ` Elliot Berman
2023-02-16 6:39 ` Greg Kroah-Hartman
2023-02-16 6:39 ` Greg Kroah-Hartman
2023-02-16 17:18 ` Elliot Berman
2023-02-16 17:18 ` Elliot Berman
2023-02-21 7:50 ` Srinivas Kandagatla
2023-02-21 7:50 ` Srinivas Kandagatla
2023-02-23 21:36 ` Alex Elder
2023-02-23 21:36 ` Alex Elder
2023-02-23 23:10 ` Elliot Berman
2023-02-23 23:10 ` Elliot Berman
2023-02-14 21:23 ` [PATCH v10 10/26] gunyah: vm_mgr: Introduce basic VM Manager Elliot Berman
2023-02-14 21:23 ` Elliot Berman
2023-02-21 10:46 ` Srinivas Kandagatla
2023-02-21 10:46 ` Srinivas Kandagatla
2023-02-22 0:27 ` Elliot Berman
2023-02-22 0:27 ` Elliot Berman
2023-02-23 10:08 ` Srinivas Kandagatla
2023-02-23 10:08 ` Srinivas Kandagatla
2023-02-23 22:40 ` Elliot Berman
2023-02-23 22:40 ` Elliot Berman
2023-02-24 10:29 ` Srinivas Kandagatla
2023-02-24 10:29 ` Srinivas Kandagatla
2023-02-24 13:20 ` Arnd Bergmann
2023-02-24 13:20 ` Arnd Bergmann
2023-02-24 22:48 ` Elliot Berman
2023-02-24 22:48 ` Elliot Berman
2023-02-28 1:06 ` Alex Elder
2023-02-28 1:06 ` Alex Elder
2023-02-28 9:19 ` Arnd Bergmann
2023-02-28 9:19 ` Arnd Bergmann
2023-02-21 13:06 ` Srivatsa Vaddagiri
2023-02-21 13:06 ` Srivatsa Vaddagiri
2023-02-14 21:24 ` [PATCH v10 11/26] gunyah: rsc_mgr: Add RPC for sharing memory Elliot Berman
2023-02-14 21:24 ` Elliot Berman
2023-02-21 11:07 ` Srinivas Kandagatla
2023-02-21 11:07 ` Srinivas Kandagatla
2023-02-14 21:24 ` [PATCH v10 12/26] gunyah: vm_mgr: Add/remove user memory regions Elliot Berman
2023-02-14 21:24 ` Elliot Berman
2023-02-16 6:38 ` Greg Kroah-Hartman
2023-02-16 6:38 ` Greg Kroah-Hartman
2023-02-16 17:24 ` Elliot Berman
2023-02-16 17:24 ` Elliot Berman
2023-02-21 12:28 ` Srinivas Kandagatla
2023-02-21 12:28 ` Srinivas Kandagatla
2023-02-21 12:43 ` Srivatsa Vaddagiri
2023-02-21 12:43 ` Srivatsa Vaddagiri
2023-02-24 0:43 ` Elliot Berman
2023-02-24 0:43 ` Elliot Berman
2023-02-24 10:36 ` Srinivas Kandagatla
2023-02-24 10:36 ` Srinivas Kandagatla
2023-02-21 12:45 ` Srivatsa Vaddagiri
2023-02-21 12:45 ` Srivatsa Vaddagiri
2023-02-24 0:34 ` Alex Elder
2023-02-24 0:34 ` Alex Elder
2023-02-25 1:03 ` Elliot Berman
2023-02-25 1:03 ` Elliot Berman
2023-02-24 10:19 ` Fuad Tabba
2023-02-24 10:19 ` Fuad Tabba
2023-02-24 18:08 ` Elliot Berman
2023-02-24 18:08 ` Elliot Berman
2023-02-24 18:58 ` Sean Christopherson
2023-02-24 18:58 ` Sean Christopherson
2023-02-27 9:55 ` Fuad Tabba
2023-02-27 9:55 ` Fuad Tabba
2023-02-14 21:24 ` [PATCH v10 13/26] gunyah: vm_mgr: Add ioctls to support basic non-proxy VM boot Elliot Berman
2023-02-14 21:24 ` Elliot Berman
2023-02-16 6:35 ` Greg Kroah-Hartman
2023-02-16 6:35 ` Greg Kroah-Hartman
2023-02-16 17:20 ` Elliot Berman
2023-02-16 17:20 ` Elliot Berman
2023-02-20 9:15 ` Srivatsa Vaddagiri
2023-02-20 9:15 ` Srivatsa Vaddagiri
2023-02-20 9:54 ` Srivatsa Vaddagiri
2023-02-20 9:54 ` Srivatsa Vaddagiri
2023-02-21 13:06 ` Srivatsa Vaddagiri
2023-02-21 13:06 ` Srivatsa Vaddagiri
2023-02-21 14:17 ` Srinivas Kandagatla
2023-02-21 14:17 ` Srinivas Kandagatla
2023-02-23 0:50 ` Elliot Berman
2023-02-23 0:50 ` Elliot Berman
2023-02-23 9:21 ` Srinivas Kandagatla
2023-02-23 9:21 ` Srinivas Kandagatla
2023-02-14 21:24 ` [PATCH v10 14/26] samples: Add sample userspace Gunyah VM Manager Elliot Berman
2023-02-14 21:24 ` Elliot Berman
2023-02-14 21:24 ` [PATCH v10 15/26] gunyah: rsc_mgr: Add platform ops on mem_lend/mem_reclaim Elliot Berman
2023-02-14 21:24 ` Elliot Berman
2023-02-21 14:51 ` Srinivas Kandagatla
2023-02-21 14:51 ` Srinivas Kandagatla
2023-02-21 21:22 ` Elliot Berman [this message]
2023-02-21 21:22 ` Elliot Berman
2023-02-22 10:21 ` Srinivas Kandagatla
2023-02-22 10:21 ` Srinivas Kandagatla
2023-02-23 1:55 ` Elliot Berman
2023-02-23 1:55 ` Elliot Berman
2023-02-14 21:24 ` [PATCH v10 16/26] firmware: qcom_scm: Register Gunyah platform ops Elliot Berman
2023-02-14 21:24 ` Elliot Berman
2023-02-16 0:22 ` kernel test robot
2023-02-16 0:22 ` kernel test robot
2023-02-16 11:09 ` kernel test robot
2023-02-16 11:09 ` kernel test robot
2023-02-21 14:55 ` Srinivas Kandagatla
2023-02-21 14:55 ` Srinivas Kandagatla
2023-02-14 21:25 ` [PATCH v10 17/26] docs: gunyah: Document Gunyah VM Manager Elliot Berman
2023-02-14 21:25 ` Elliot Berman
2023-02-23 23:55 ` Alex Elder
2023-02-23 23:55 ` Alex Elder
2023-02-14 21:25 ` [PATCH v10 18/26] virt: gunyah: Translate gh_rm_hyp_resource into gunyah_resource Elliot Berman
2023-02-14 21:25 ` Elliot Berman
2023-02-21 17:47 ` Srinivas Kandagatla
2023-02-21 17:47 ` Srinivas Kandagatla
2023-02-14 21:25 ` [PATCH v10 19/26] gunyah: vm_mgr: Add framework to add VM Functions Elliot Berman
2023-02-14 21:25 ` Elliot Berman
2023-02-17 13:23 ` Srivatsa Vaddagiri
2023-02-17 13:23 ` Srivatsa Vaddagiri
2023-02-21 13:07 ` Srivatsa Vaddagiri
2023-02-21 13:07 ` Srivatsa Vaddagiri
2023-02-21 17:58 ` Srinivas Kandagatla
2023-02-21 17:58 ` Srinivas Kandagatla
2023-02-22 14:08 ` Srinivas Kandagatla
2023-02-22 14:08 ` Srinivas Kandagatla
2023-02-24 23:44 ` Elliot Berman
2023-02-24 23:44 ` Elliot Berman
2023-02-14 21:25 ` [PATCH v10 20/26] virt: gunyah: Add resource tickets Elliot Berman
2023-02-14 21:25 ` Elliot Berman
2023-02-14 21:25 ` [PATCH v10 21/26] virt: gunyah: Add IO handlers Elliot Berman
2023-02-14 21:25 ` Elliot Berman
2023-02-14 21:26 ` [PATCH v10 22/26] virt: gunyah: Add proxy-scheduled vCPUs Elliot Berman
2023-02-14 21:26 ` Elliot Berman
2023-02-14 21:26 ` [PATCH v10 23/26] virt: gunyah: Add hypercalls for sending doorbell Elliot Berman
2023-02-14 21:26 ` Elliot Berman
2023-02-14 21:26 ` [PATCH v10 24/26] virt: gunyah: Add irqfd interface Elliot Berman
2023-02-14 21:26 ` Elliot Berman
2023-02-14 21:26 ` [PATCH v10 25/26] virt: gunyah: Add ioeventfd Elliot Berman
2023-02-14 21:26 ` Elliot Berman
2023-02-14 21:26 ` [PATCH v10 26/26] MAINTAINERS: Add Gunyah hypervisor drivers section Elliot Berman
2023-02-14 21:26 ` Elliot Berman
2023-02-23 21:59 ` [PATCH v10 00/26] Drivers for Gunyah hypervisor Alex Elder
2023-02-23 21:59 ` Alex Elder
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