From: Andrew Donnellan <andrew.donnellan@au1.ibm.com> To: "Alastair D'Silva" <alastair@au1.ibm.com>, linuxppc-dev@lists.ozlabs.org Cc: linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, mikey@neuling.org, vaibhav@linux.vnet.ibm.com, aneesh.kumar@linux.vnet.ibm.com, malat@debian.org, felix@linux.vnet.ibm.com, pombredanne@nexb.com, sukadev@linux.vnet.ibm.com, npiggin@gmail.com, gregkh@linuxfoundation.org, arnd@arndb.de, fbarrat@linux.vnet.ibm.com, corbet@lwn.net, "Alastair D'Silva" <alastair@d-silva.org> Subject: Re: [PATCH 7/7] ocxl: Document new OCXL IOCTLs Date: Tue, 17 Apr 2018 13:45:20 +1000 [thread overview] Message-ID: <ad475a7c-68dc-899b-28ec-8d4619e18105@au1.ibm.com> (raw) In-Reply-To: <20180417020950.21446-8-alastair@au1.ibm.com> On 17/04/18 12:09, Alastair D'Silva wrote: > From: Alastair D'Silva <alastair@d-silva.org> > > Signed-off-by: Alastair D'Silva <alastair@d-silva.org> > --- > Documentation/accelerators/ocxl.rst | 10 ++++++++++ > 1 file changed, 10 insertions(+) > > diff --git a/Documentation/accelerators/ocxl.rst b/Documentation/accelerators/ocxl.rst > index ddcc58d01cfb..144595a80a1c 100644 > --- a/Documentation/accelerators/ocxl.rst > +++ b/Documentation/accelerators/ocxl.rst > @@ -157,6 +157,16 @@ OCXL_IOCTL_GET_METADATA: > Obtains configuration information from the card, such at the size of > MMIO areas, the AFU version, and the PASID for the current context. > > +OCXL_IOCTL_ENABLE_P9_WAIT: > + > + Allows the AFU to wake a userspace thread executing 'wait'. Returns > + information to userspace to allow it to configure the AFU. Note that this is only available on POWER9. > + > +OCXL_IOCTL_GET_PLATFORM: > + > + Notifies userspace as to the platform the kernel believes we are on, > + which may differ from what userspace believes. Also reports on which CPU > + features which are usable from userspace. The first sentence here doesn't seem to relate to anything that GET_PLATFORM actually does - afaict you're just passing flags which I suppose imply what the correct platform is, but really they're just feature flags? -- Andrew Donnellan OzLabs, ADL Canberra andrew.donnellan@au1.ibm.com IBM Australia Limited
WARNING: multiple messages have this Message-ID (diff)
From: Andrew Donnellan <andrew.donnellan@au1.ibm.com> To: "Alastair D'Silva" <alastair@au1.ibm.com>, linuxppc-dev@lists.ozlabs.org Cc: linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, mikey@neuling.org, vaibhav@linux.vnet.ibm.com, aneesh.kumar@linux.vnet.ibm.com, malat@debian.org, felix@linux.vnet.ibm.com, pombredanne@nexb.com, sukadev@linux.vnet.ibm.com, npiggin@gmail.com, gregkh@linuxfoundation.org, arnd@arndb.de, fbarrat@linux.vnet.ibm.com, corbet@lwn.net, "Alastair D'Silva" <alastair@d-silva.org> Subject: Re: [PATCH 7/7] ocxl: Document new OCXL IOCTLs Date: Tue, 17 Apr 2018 13:45:20 +1000 [thread overview] Message-ID: <ad475a7c-68dc-899b-28ec-8d4619e18105@au1.ibm.com> (raw) In-Reply-To: <20180417020950.21446-8-alastair@au1.ibm.com> On 17/04/18 12:09, Alastair D'Silva wrote: > From: Alastair D'Silva <alastair@d-silva.org> > > Signed-off-by: Alastair D'Silva <alastair@d-silva.org> > --- > Documentation/accelerators/ocxl.rst | 10 ++++++++++ > 1 file changed, 10 insertions(+) > > diff --git a/Documentation/accelerators/ocxl.rst b/Documentation/accelerators/ocxl.rst > index ddcc58d01cfb..144595a80a1c 100644 > --- a/Documentation/accelerators/ocxl.rst > +++ b/Documentation/accelerators/ocxl.rst > @@ -157,6 +157,16 @@ OCXL_IOCTL_GET_METADATA: > Obtains configuration information from the card, such at the size of > MMIO areas, the AFU version, and the PASID for the current context. > > +OCXL_IOCTL_ENABLE_P9_WAIT: > + > + Allows the AFU to wake a userspace thread executing 'wait'. Returns > + information to userspace to allow it to configure the AFU. Note that this is only available on POWER9. > + > +OCXL_IOCTL_GET_PLATFORM: > + > + Notifies userspace as to the platform the kernel believes we are on, > + which may differ from what userspace believes. Also reports on which CPU > + features which are usable from userspace. The first sentence here doesn't seem to relate to anything that GET_PLATFORM actually does - afaict you're just passing flags which I suppose imply what the correct platform is, but really they're just feature flags? -- Andrew Donnellan OzLabs, ADL Canberra andrew.donnellan@au1.ibm.com IBM Australia Limited -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
next prev parent reply other threads:[~2018-04-17 3:45 UTC|newest] Thread overview: 119+ messages / expand[flat|nested] mbox.gz Atom feed top 2018-04-17 2:09 [PATCH 0/7] ocxl: Implement Power9 as_notify/wait for OpenCAPI Alastair D'Silva 2018-04-17 2:09 ` Alastair D'Silva 2018-04-17 2:09 ` [PATCH 1/7] powerpc: Add TIDR CPU feature for Power9 Alastair D'Silva 2018-04-17 2:09 ` Alastair D'Silva 2018-04-17 4:09 ` Andrew Donnellan 2018-04-17 4:09 ` Andrew Donnellan 2018-04-17 2:09 ` [PATCH 2/7] powerpc: Use TIDR CPU feature to control TIDR allocation Alastair D'Silva 2018-04-17 2:09 ` Alastair D'Silva 2018-04-17 4:21 ` Andrew Donnellan 2018-04-17 4:21 ` Andrew Donnellan 2018-04-17 5:31 ` Alastair D'Silva 2018-04-17 5:31 ` Alastair D'Silva 2018-04-17 2:09 ` [PATCH 3/7] powerpc: use task_pid_nr() for TID allocation Alastair D'Silva 2018-04-17 2:09 ` Alastair D'Silva 2018-04-17 2:09 ` [PATCH 4/7] ocxl: Rename pnv_ocxl_spa_remove_pe to clarify it's action Alastair D'Silva 2018-04-17 2:09 ` Alastair D'Silva 2018-04-17 5:37 ` Andrew Donnellan 2018-04-17 5:37 ` Andrew Donnellan 2018-04-17 2:09 ` [PATCH 5/7] ocxl: Expose the thread_id needed for wait on p9 Alastair D'Silva 2018-04-17 2:09 ` Alastair D'Silva 2018-04-17 2:09 ` [PATCH 6/7] ocxl: Add an IOCTL so userspace knows which platform the kernel requires Alastair D'Silva 2018-04-17 2:09 ` Alastair D'Silva 2018-04-17 2:09 ` [PATCH 7/7] ocxl: Document new OCXL IOCTLs Alastair D'Silva 2018-04-17 2:09 ` Alastair D'Silva 2018-04-17 3:45 ` Andrew Donnellan [this message] 2018-04-17 3:45 ` Andrew Donnellan 2018-04-18 1:08 ` [PATCH v2 0/7] ocxl: Implement Power9 as_notify/wait for OpenCAPI Alastair D'Silva 2018-04-18 1:08 ` Alastair D'Silva 2018-04-18 1:08 ` [PATCH v2 1/7] powerpc: Add TIDR CPU feature for Power9 Alastair D'Silva 2018-04-18 1:08 ` Alastair D'Silva 2018-04-18 7:03 ` Andrew Donnellan 2018-04-18 7:03 ` Andrew Donnellan 2018-05-07 17:17 ` Frederic Barrat 2018-05-07 17:17 ` Frederic Barrat 2018-05-08 3:13 ` Alastair D'Silva 2018-05-08 3:13 ` Alastair D'Silva 2018-04-18 1:08 ` [PATCH v2 2/7] powerpc: Use TIDR CPU feature to control TIDR allocation Alastair D'Silva 2018-04-18 1:08 ` Alastair D'Silva 2018-04-18 7:13 ` Andrew Donnellan 2018-04-18 7:13 ` Andrew Donnellan 2018-05-07 17:19 ` Frederic Barrat 2018-05-07 17:19 ` Frederic Barrat 2018-04-18 1:08 ` [PATCH v2 3/7] powerpc: use task_pid_nr() for TID allocation Alastair D'Silva 2018-04-18 1:08 ` Alastair D'Silva 2018-04-20 8:43 ` Andrew Donnellan 2018-04-20 8:43 ` Andrew Donnellan 2018-04-24 21:12 ` Sukadev Bhattiprolu 2018-04-24 21:12 ` Sukadev Bhattiprolu 2018-04-26 9:25 ` Andrew Donnellan 2018-04-26 9:25 ` Andrew Donnellan 2018-05-07 17:37 ` Frederic Barrat 2018-05-07 17:37 ` Frederic Barrat 2018-05-08 0:40 ` Alastair D'Silva 2018-05-08 0:40 ` Alastair D'Silva 2018-04-18 1:08 ` [PATCH v2 4/7] ocxl: Rename pnv_ocxl_spa_remove_pe to clarify it's action Alastair D'Silva 2018-04-18 1:08 ` Alastair D'Silva 2018-05-07 17:38 ` Frederic Barrat 2018-05-07 17:38 ` Frederic Barrat 2018-04-18 1:08 ` [PATCH v2 5/7] ocxl: Expose the thread_id needed for wait on p9 Alastair D'Silva 2018-04-18 1:08 ` Alastair D'Silva 2018-04-23 7:16 ` Andrew Donnellan 2018-04-23 7:16 ` Andrew Donnellan 2018-05-07 18:08 ` Frederic Barrat 2018-05-07 18:08 ` Frederic Barrat 2018-04-18 1:08 ` [PATCH v2 6/7] ocxl: Add an IOCTL so userspace knows what CPU features are available Alastair D'Silva 2018-04-18 1:08 ` Alastair D'Silva 2018-04-20 7:25 ` Andrew Donnellan 2018-04-20 7:25 ` Andrew Donnellan 2018-05-07 18:14 ` Frederic Barrat 2018-05-07 18:14 ` Frederic Barrat 2018-05-08 0:41 ` Alastair D'Silva 2018-05-08 0:41 ` Alastair D'Silva 2018-05-08 3:50 ` Nicholas Piggin 2018-05-08 3:50 ` Nicholas Piggin 2018-05-08 3:54 ` Alastair D'Silva 2018-05-08 3:54 ` Alastair D'Silva 2018-04-18 1:08 ` [PATCH v2 7/7] ocxl: Document new OCXL IOCTLs Alastair D'Silva 2018-04-18 1:08 ` Alastair D'Silva 2018-04-18 7:29 ` Andrew Donnellan 2018-04-18 7:29 ` Andrew Donnellan 2018-05-07 18:15 ` Frederic Barrat 2018-05-07 18:15 ` Frederic Barrat 2018-05-09 0:42 ` [PATCH v3 0/7] ocxl: Implement Power9 as_notify/wait for OpenCAPI Alastair D'Silva 2018-05-09 0:42 ` Alastair D'Silva 2018-05-09 0:42 ` [PATCH v3 1/7] powerpc: Add TIDR CPU feature for POWER9 Alastair D'Silva 2018-05-09 0:42 ` Alastair D'Silva 2018-05-09 0:42 ` [PATCH v3 2/7] powerpc: Use TIDR CPU feature to control TIDR allocation Alastair D'Silva 2018-05-09 0:42 ` Alastair D'Silva 2018-05-09 0:42 ` [PATCH v3 3/7] powerpc: use task_pid_nr() for TID allocation Alastair D'Silva 2018-05-09 0:42 ` Alastair D'Silva 2018-05-09 0:42 ` [PATCH v3 4/7] ocxl: Rename pnv_ocxl_spa_remove_pe to clarify it's action Alastair D'Silva 2018-05-09 0:42 ` Alastair D'Silva 2018-05-09 0:42 ` [PATCH v3 5/7] ocxl: Expose the thread_id needed for wait on POWER9 Alastair D'Silva 2018-05-09 0:42 ` Alastair D'Silva 2018-05-11 5:01 ` Michael Ellerman 2018-05-11 5:01 ` Michael Ellerman 2018-05-09 0:42 ` [PATCH v3 6/7] ocxl: Add an IOCTL so userspace knows what OCXL features are available Alastair D'Silva 2018-05-09 0:42 ` Alastair D'Silva 2018-05-09 0:42 ` [PATCH v3 7/7] ocxl: Document new OCXL IOCTLs Alastair D'Silva 2018-05-09 0:42 ` Alastair D'Silva 2018-05-09 5:34 ` [PATCH v4 0/7] ocxl: Implement Power9 as_notify/wait for OpenCAPI Alastair D'Silva 2018-05-09 5:34 ` Alastair D'Silva 2018-05-09 5:35 ` [PATCH v4 1/7] powerpc: Add TIDR CPU feature for POWER9 Alastair D'Silva 2018-05-09 5:35 ` Alastair D'Silva 2018-05-09 5:35 ` [PATCH v4 2/7] powerpc: Use TIDR CPU feature to control TIDR allocation Alastair D'Silva 2018-05-09 5:35 ` Alastair D'Silva 2018-05-09 5:35 ` [PATCH v4 3/7] powerpc: use task_pid_nr() for TID allocation Alastair D'Silva 2018-05-09 5:35 ` Alastair D'Silva 2018-05-09 5:35 ` [PATCH v4 4/7] ocxl: Rename pnv_ocxl_spa_remove_pe to clarify it's action Alastair D'Silva 2018-05-09 5:35 ` Alastair D'Silva 2018-05-09 5:35 ` [PATCH v4 5/7] ocxl: Expose the thread_id needed for wait on POWER9 Alastair D'Silva 2018-05-09 5:35 ` Alastair D'Silva 2018-05-09 5:35 ` [PATCH v4 6/7] ocxl: Add an IOCTL so userspace knows what OCXL features are available Alastair D'Silva 2018-05-09 5:35 ` Alastair D'Silva 2018-05-11 5:20 ` Michael Ellerman 2018-05-11 5:20 ` Michael Ellerman 2018-05-11 5:20 ` Michael Ellerman 2018-05-09 5:35 ` [PATCH v4 7/7] ocxl: Document new OCXL IOCTLs Alastair D'Silva 2018-05-09 5:35 ` Alastair D'Silva
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