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From: "Alastair D'Silva" <alastair@au1.ibm.com>
To: Frederic Barrat <fbarrat@linux.ibm.com>
Cc: "Aneesh Kumar K . V" <aneesh.kumar@linux.ibm.com>,
	"Benjamin Herrenschmidt" <benh@kernel.crashing.org>,
	"Paul Mackerras" <paulus@samba.org>,
	"Michael Ellerman" <mpe@ellerman.id.au>,
	"Andrew Donnellan" <ajd@linux.ibm.com>,
	"Arnd Bergmann" <arnd@arndb.de>,
	"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
	"Andrew Morton" <akpm@linux-foundation.org>,
	"Mauro Carvalho Chehab" <mchehab+samsung@kernel.org>,
	"David S. Miller" <davem@davemloft.net>,
	"Rob Herring" <robh@kernel.org>,
	"Anton Blanchard" <anton@ozlabs.org>,
	"Krzysztof Kozlowski" <krzk@kernel.org>,
	"Mahesh Salgaonkar" <mahesh@linux.vnet.ibm.com>,
	"Madhavan Srinivasan" <maddy@linux.vnet.ibm.com>,
	"Cédric Le Goater" <clg@kaod.org>,
	"Anju T Sudhakar" <anju@linux.vnet.ibm.com>,
	"Hari Bathini" <hbathini@linux.ibm.com>,
	"Thomas Gleixner" <tglx@linutronix.de>,
	"Greg Kurz" <groug@kaod.org>,
	"Nicholas Piggin" <npiggin@gmail.com>,
	"Masahiro Yamada" <yamada.masahiro@socionext.com>,
	"Alexey Kardashevskiy" <aik@ozlabs.ru>,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 20/27] powerpc/powernv/pmem: Forward events to userspace
Date: Wed, 11 Mar 2020 14:32:23 +1100	[thread overview]
Message-ID: <d22899af71549f2768e5e932f0f21a60c39586f6.camel@au1.ibm.com> (raw)
In-Reply-To: <7ee589c0-2c02-9b8e-95a9-743ce29674ec@linux.ibm.com>

On Wed, 2020-03-04 at 12:00 +0100, Frederic Barrat wrote:
> 
> Le 21/02/2020 à 04:27, Alastair D'Silva a écrit :
> > From: Alastair D'Silva <alastair@d-silva.org>
> > 
> > Some of the interrupts that the card generates are better handled
> > by the userspace daemon, in particular:
> > Controller Hardware/Firmware Fatal
> > Controller Dump Available
> > Error Log available
> > 
> > This patch allows a userspace application to register an eventfd
> > with
> > the driver via SCM_IOCTL_EVENTFD to receive notifications of these
> > interrupts.
> > 
> > Userspace can then identify what events have occurred by calling
> > SCM_IOCTL_EVENT_CHECK and checking against the SCM_IOCTL_EVENT_FOO
> > masks.
> > 
> > Signed-off-by: Alastair D'Silva <alastair@d-silva.org>
> > ---
> >   arch/powerpc/platforms/powernv/pmem/ocxl.c    | 216
> > ++++++++++++++++++
> >   .../platforms/powernv/pmem/ocxl_internal.h    |   5 +
> >   include/uapi/nvdimm/ocxl-pmem.h               |  16 ++
> >   3 files changed, 237 insertions(+)
> > 
> > diff --git a/arch/powerpc/platforms/powernv/pmem/ocxl.c
> > b/arch/powerpc/platforms/powernv/pmem/ocxl.c
> > index 009d4fd29e7d..e46696d3cc36 100644
> > --- a/arch/powerpc/platforms/powernv/pmem/ocxl.c
> > +++ b/arch/powerpc/platforms/powernv/pmem/ocxl.c
> > @@ -10,6 +10,7 @@
> >   #include <misc/ocxl.h>
> >   #include <linux/delay.h>
> >   #include <linux/ndctl.h>
> > +#include <linux/eventfd.h>
> >   #include <linux/fs.h>
> >   #include <linux/mm_types.h>
> >   #include <linux/memory_hotplug.h>
> > @@ -335,11 +336,22 @@ static void free_ocxlpmem(struct ocxlpmem
> > *ocxlpmem)
> >   {
> >   	int rc;
> >   
> > +	// Disable doorbells
> > +	(void)ocxl_global_mmio_set64(ocxlpmem->ocxl_afu,
> > GLOBAL_MMIO_CHIEC,
> > +				     OCXL_LITTLE_ENDIAN,
> > +				     GLOBAL_MMIO_CHI_ALL);
> > +
> >   	if (ocxlpmem->nvdimm_bus)
> >   		nvdimm_bus_unregister(ocxlpmem->nvdimm_bus);
> >   
> >   	free_minor(ocxlpmem);
> >   
> > +	if (ocxlpmem->irq_addr[1])
> > +		iounmap(ocxlpmem->irq_addr[1]);
> > +
> > +	if (ocxlpmem->irq_addr[0])
> > +		iounmap(ocxlpmem->irq_addr[0]);
> > +
> >   	if (ocxlpmem->cdev.owner)
> >   		cdev_del(&ocxlpmem->cdev);
> >   
> > @@ -443,6 +455,11 @@ static int file_release(struct inode *inode,
> > struct file *file)
> >   {
> >   	struct ocxlpmem *ocxlpmem = file->private_data;
> >   
> > +	if (ocxlpmem->ev_ctx) {
> > +		eventfd_ctx_put(ocxlpmem->ev_ctx);
> > +		ocxlpmem->ev_ctx = NULL;
> > +	}
> > +
> >   	ocxlpmem_put(ocxlpmem);
> >   	return 0;
> >   }
> > @@ -938,6 +955,51 @@ static int ioctl_controller_stats(struct
> > ocxlpmem *ocxlpmem,
> >   	return rc;
> >   }
> >   
> > +static int ioctl_eventfd(struct ocxlpmem *ocxlpmem,
> > +		 struct ioctl_ocxl_pmem_eventfd __user *uarg)
> > +{
> > +	struct ioctl_ocxl_pmem_eventfd args;
> > +
> > +	if (copy_from_user(&args, uarg, sizeof(args)))
> > +		return -EFAULT;
> > +
> > +	if (ocxlpmem->ev_ctx)
> > +		return -EINVAL;
> 
> EBUSY?
> 
Ok

> 
> > +
> > +	ocxlpmem->ev_ctx = eventfd_ctx_fdget(args.eventfd);
> > +	if (!ocxlpmem->ev_ctx)
> > +		return -EFAULT;
> 
> Why not use what eventfd_ctx_fdget() returned? (through some
> IS_ERR() 
> and PTR_ERR() convolution)
> 

Ok
> 
> > +
> > +	return 0;
> > +}
> > +
> > +static int ioctl_event_check(struct ocxlpmem *ocxlpmem, u64 __user
> > *uarg)
> > +{
> > +	u64 val = 0;
> > +	int rc;
> > +	u64 chi = 0;
> > +
> > +	rc = ocxlpmem_chi(ocxlpmem, &chi);
> > +	if (rc < 0)
> > +		return rc;
> > +
> > +	if (chi & GLOBAL_MMIO_CHI_ELA)
> > +		val |= IOCTL_OCXL_PMEM_EVENT_ERROR_LOG_AVAILABLE;
> > +
> > +	if (chi & GLOBAL_MMIO_CHI_CDA)
> > +		val |= IOCTL_OCXL_PMEM_EVENT_CONTROLLER_DUMP_AVAILABLE;
> > +
> > +	if (chi & GLOBAL_MMIO_CHI_CFFS)
> > +		val |= IOCTL_OCXL_PMEM_EVENT_FIRMWARE_FATAL;
> > +
> > +	if (chi & GLOBAL_MMIO_CHI_CHFS)
> > +		val |= IOCTL_OCXL_PMEM_EVENT_HARDWARE_FATAL;
> > +
> > +	rc = copy_to_user((u64 __user *) uarg, &val, sizeof(val));
> > +
> 
> copy_to_user doesn't return an errno. Should be:
> 
> if (copy_to_user((u64 __user *) uarg, &val, sizeof(val)))
> 	return -EFAULT;
> 
Ok

> 
> > +	return rc;
> > +}
> > +
> >   static long file_ioctl(struct file *file, unsigned int cmd,
> > unsigned long args)
> >   {
> >   	struct ocxlpmem *ocxlpmem = file->private_data;
> > @@ -966,6 +1028,15 @@ static long file_ioctl(struct file *file,
> > unsigned int cmd, unsigned long args)
> >   		rc = ioctl_controller_stats(ocxlpmem,
> >   					    (struct
> > ioctl_ocxl_pmem_controller_stats __user *)args);
> >   		break;
> > +
> > +	case IOCTL_OCXL_PMEM_EVENTFD:
> > +		rc = ioctl_eventfd(ocxlpmem,
> > +				   (struct ioctl_ocxl_pmem_eventfd
> > __user *)args);
> > +		break;
> > +
> > +	case IOCTL_OCXL_PMEM_EVENT_CHECK:
> > +		rc = ioctl_event_check(ocxlpmem, (u64 __user *)args);
> > +		break;
> >   	}
> >   
> >   	return rc;
> > @@ -1107,6 +1178,146 @@ static void dump_error_log(struct ocxlpmem
> > *ocxlpmem)
> >   	kfree(buf);
> >   }
> >   
> > +static irqreturn_t imn0_handler(void *private)
> > +{
> > +	struct ocxlpmem *ocxlpmem = private;
> > +	u64 chi = 0;
> > +
> > +	(void)ocxlpmem_chi(ocxlpmem, &chi);
> > +
> > +	if (chi & GLOBAL_MMIO_CHI_ELA) {
> > +		dev_warn(&ocxlpmem->dev, "Error log is available\n");
> > +
> > +		if (ocxlpmem->ev_ctx)
> > +			eventfd_signal(ocxlpmem->ev_ctx, 1);
> > +	}
> > +
> > +	if (chi & GLOBAL_MMIO_CHI_CDA) {
> > +		dev_warn(&ocxlpmem->dev, "Controller dump is
> > available\n");
> > +
> > +		if (ocxlpmem->ev_ctx)
> > +			eventfd_signal(ocxlpmem->ev_ctx, 1);
> > +	}
> > +
> > +
> 
> (at least) one empty line too many.
> 

Ok

> 
> > +	return IRQ_HANDLED;
> > +}
> > +
> > +static irqreturn_t imn1_handler(void *private)
> > +{
> > +	struct ocxlpmem *ocxlpmem = private;
> > +	u64 chi = 0;
> > +
> > +	(void)ocxlpmem_chi(ocxlpmem, &chi);
> > +
> > +	if (chi & (GLOBAL_MMIO_CHI_CFFS | GLOBAL_MMIO_CHI_CHFS)) {
> > +		dev_err(&ocxlpmem->dev,
> > +			"Controller status is fatal, chi=0x%llx, going
> > offline\n", chi);
> > +
> > +		if (ocxlpmem->nvdimm_bus) {
> > +			nvdimm_bus_unregister(ocxlpmem->nvdimm_bus);
> > +			ocxlpmem->nvdimm_bus = NULL;
> > +		}
> > +
> > +		if (ocxlpmem->ev_ctx)
> > +			eventfd_signal(ocxlpmem->ev_ctx, 1);
> > +	}
> > +
> > +	return IRQ_HANDLED;
> > +}
> > +
> > +
> > +/**
> > + * ocxlpmem_setup_irq() - Set up the IRQs for the OpenCAPI
> > Persistent Memory device
> > + * @ocxlpmem: the device metadata
> > + * Return: 0 on success, negative on failure
> > + */
> > +static int ocxlpmem_setup_irq(struct ocxlpmem *ocxlpmem)
> > +{
> > +	int rc;
> > +	u64 irq_addr;
> > +
> > +	rc = ocxl_afu_irq_alloc(ocxlpmem->ocxl_context, &ocxlpmem-
> > >irq_id[0]);
> > +	if (rc)
> > +		return rc;
> > +
> > +	rc = ocxl_irq_set_handler(ocxlpmem->ocxl_context, ocxlpmem-
> > >irq_id[0],
> > +				  imn0_handler, NULL, ocxlpmem);
> > +
> > +	irq_addr = ocxl_afu_irq_get_addr(ocxlpmem->ocxl_context,
> > ocxlpmem->irq_id[0]);
> > +	if (!irq_addr)
> > +		return -EINVAL;
> > +
> > +	ocxlpmem->irq_addr[0] = ioremap(irq_addr, PAGE_SIZE);
> > +	if (!ocxlpmem->irq_addr[0])
> > +		return -EINVAL;
> > +
> > +	rc = ocxl_global_mmio_write64(ocxlpmem->ocxl_afu,
> > GLOBAL_MMIO_IMA0_OHP,
> > +				      OCXL_LITTLE_ENDIAN,
> > +				      (u64)ocxlpmem->irq_addr[0]);
> > +	if (rc)
> > +		goto out_irq0;
> > +
> > +	rc = ocxl_global_mmio_write64(ocxlpmem->ocxl_afu,
> > GLOBAL_MMIO_IMA0_CFP,
> > +				      OCXL_LITTLE_ENDIAN, 0);
> > +	if (rc)
> > +		goto out_irq0;
> 
> That's a few lines of duplicate code. On the other hand, there's
> enough 
> varying parameters between the 2 interrupts that factorizing in a 
> subfunction would be slightly less readable. So duplicating is
> probably ok.
> 
> 
> 
> > +	rc = ocxl_afu_irq_alloc(ocxlpmem->ocxl_context, &ocxlpmem-
> > >irq_id[1]);
> > +	if (rc)
> > +		goto out_irq0;
> > +
> > +
> > +	rc = ocxl_irq_set_handler(ocxlpmem->ocxl_context, ocxlpmem-
> > >irq_id[1],
> > +				  imn1_handler, NULL, ocxlpmem);
> > +	if (rc)
> > +		goto out_irq0;
> > +
> > +	irq_addr = ocxl_afu_irq_get_addr(ocxlpmem->ocxl_context,
> > ocxlpmem->irq_id[1]);
> > +	if (!irq_addr) {
> > +		rc = -EFAULT;
> > +		goto out_irq0;
> > +	}
> > +
> > +	ocxlpmem->irq_addr[1] = ioremap(irq_addr, PAGE_SIZE);
> > +	if (!ocxlpmem->irq_addr[1]) {
> > +		rc = -EINVAL;
> > +		goto out_irq0;
> > +	}
> > +
> > +	rc = ocxl_global_mmio_write64(ocxlpmem->ocxl_afu,
> > GLOBAL_MMIO_IMA1_OHP,
> > +				      OCXL_LITTLE_ENDIAN,
> > +				      (u64)ocxlpmem->irq_addr[1]);
> > +	if (rc)
> > +		goto out_irq1;
> > +
> > +	rc = ocxl_global_mmio_write64(ocxlpmem->ocxl_afu,
> > GLOBAL_MMIO_IMA1_CFP,
> > +				      OCXL_LITTLE_ENDIAN, 0);
> > +	if (rc)
> > +		goto out_irq1;
> > +
> > +	// Enable doorbells
> > +	rc = ocxl_global_mmio_set64(ocxlpmem->ocxl_afu,
> > GLOBAL_MMIO_CHIE,
> > +				    OCXL_LITTLE_ENDIAN,
> > +				    GLOBAL_MMIO_CHI_ELA |
> > GLOBAL_MMIO_CHI_CDA |
> > +				    GLOBAL_MMIO_CHI_CFFS |
> > GLOBAL_MMIO_CHI_CHFS |
> > +				    GLOBAL_MMIO_CHI_NSCRA);
> 
> GLOBAL_MMIO_CHI_NSCRA doesn't seem to be handled in the handlers.
> 

This will be moved to the overwrite patch.

> 
> 
> > +	if (rc)
> > +		goto out_irq1;
> > +
> > +	return 0;
> > +
> > +out_irq1:
> > +	iounmap(ocxlpmem->irq_addr[1]);
> > +	ocxlpmem->irq_addr[1] = NULL;
> > +
> > +out_irq0:
> > +	iounmap(ocxlpmem->irq_addr[0]);
> > +	ocxlpmem->irq_addr[0] = NULL;
> > +
> > +	return rc;
> > +}
> > +
> >   /**
> >    * probe_function0() - Set up function 0 for an OpenCAPI
> > persistent memory device
> >    * This is important as it enables templates higher than 0 across
> > all other functions,
> > @@ -1216,6 +1427,11 @@ static int probe(struct pci_dev *pdev, const
> > struct pci_device_id *ent)
> >   		goto err;
> >   	}
> >   
> > +	if (ocxlpmem_setup_irq(ocxlpmem)) {
> > +		dev_err(&pdev->dev, "Could not set up OCXL IRQs\n");
> 
> Like with other patches, rc needs to be set.
> 
ok

> 
> > +		goto err;
> > +	}
> > +
> >   	if (setup_command_metadata(ocxlpmem)) {
> >   		dev_err(&pdev->dev, "Could not read OCXL command
> > matada\n");
> >   		goto err;
> > diff --git a/arch/powerpc/platforms/powernv/pmem/ocxl_internal.h
> > b/arch/powerpc/platforms/powernv/pmem/ocxl_internal.h
> > index b953ee522ed4..927690f4888f 100644
> > --- a/arch/powerpc/platforms/powernv/pmem/ocxl_internal.h
> > +++ b/arch/powerpc/platforms/powernv/pmem/ocxl_internal.h
> > @@ -103,6 +103,10 @@ struct ocxlpmem {
> >   	struct pci_dev *pdev;
> >   	struct cdev cdev;
> >   	struct ocxl_fn *ocxl_fn;
> > +#define SCM_IRQ_COUNT 2
> > +	int irq_id[SCM_IRQ_COUNT];
> > +	struct dev_pagemap irq_pgmap[SCM_IRQ_COUNT];
> 
> irq_pgmap is not used.

Ok
> 
> 
> > +	void *irq_addr[SCM_IRQ_COUNT];
> >   	struct nd_interleave_set nd_set;
> >   	struct nvdimm_bus_descriptor bus_desc;
> >   	struct nvdimm_bus *nvdimm_bus;
> > @@ -113,6 +117,7 @@ struct ocxlpmem {
> >   	struct command_metadata ns_command;
> >   	struct resource pmem_res;
> >   	struct nd_region *nd_region;
> > +	struct eventfd_ctx *ev_ctx;
> >   	char fw_version[8+1];
> >   	u32 timeouts[ADMIN_COMMAND_MAX+1];
> >   
> > diff --git a/include/uapi/nvdimm/ocxl-pmem.h
> > b/include/uapi/nvdimm/ocxl-pmem.h
> > index add223aa2fdb..988eb0bc413d 100644
> > --- a/include/uapi/nvdimm/ocxl-pmem.h
> > +++ b/include/uapi/nvdimm/ocxl-pmem.h
> > @@ -66,6 +66,20 @@ struct ioctl_ocxl_pmem_controller_stats {
> >   	__u64 cache_write_latency; /* nanoseconds */
> >   };
> >   
> > +struct ioctl_ocxl_pmem_eventfd {
> > +	__s32 eventfd;
> > +	__u32 reserved;
> > +};
> > +
> > +#ifndef BIT_ULL
> > +#define BIT_ULL(nr)	(1ULL << (nr))
> > +#endif
> > +
> > +#define IOCTL_OCXL_PMEM_EVENT_CONTROLLER_DUMP_AVAILABLE	BIT_ULL
> > (0)
> > +#define IOCTL_OCXL_PMEM_EVENT_ERROR_LOG_AVAILABLE	BIT_ULL(1)
> > +#define IOCTL_OCXL_PMEM_EVENT_HARDWARE_FATAL		BIT_ULL
> > (2)
> > +#define IOCTL_OCXL_PMEM_EVENT_FIRMWARE_FATAL		BIT_ULL
> > (3)
> > +
> 
> I'm not fond of adding a macro with such a generic name as BIT_ULL()
> in 
> a user header file. What's wrong with:
> 
> #define IOCTL_OCXL_PMEM_EVENT_CONTROLLER_DUMP_AVAILABLE	0x1
> #define IOCTL_OCXL_PMEM_EVENT_ERROR_LOG_AVAILABLE	0x2
> #define IOCTL_OCXL_PMEM_EVENT_HARDWARE_FATAL		0x4
> #define IOCTL_OCXL_PMEM_EVENT_FIRMWARE_FATAL		0x8
> 
> 

Nothing, I'll change it.

>    Fred
> 
> 
> >   /* ioctl numbers */
> >   #define OCXL_PMEM_MAGIC 0x5C
> >   /* SCM devices */
> > @@ -74,5 +88,7 @@ struct ioctl_ocxl_pmem_controller_stats {
> >   #define IOCTL_OCXL_PMEM_CONTROLLER_DUMP_DATA		_IOWR(O
> > CXL_PMEM_MAGIC, 0x03, struct ioctl_ocxl_pmem_controller_dump_data)
> >   #define IOCTL_OCXL_PMEM_CONTROLLER_DUMP_COMPLETE	_IO(OCXL_PMEM_M
> > AGIC, 0x04)
> >   #define IOCTL_OCXL_PMEM_CONTROLLER_STATS		_IO(OCXL_PMEM_M
> > AGIC, 0x05)
> > +#define IOCTL_OCXL_PMEM_EVENTFD				_IOW(OC
> > XL_PMEM_MAGIC, 0x06, struct ioctl_ocxl_pmem_eventfd)
> > +#define IOCTL_OCXL_PMEM_EVENT_CHECK			_IOR(OC
> > XL_PMEM_MAGIC, 0x07, __u64)
> >   
> >   #endif /* _UAPI_OCXL_SCM_H */
> > 
-- 
Alastair D'Silva
Open Source Developer
Linux Technology Centre, IBM Australia
mob: 0423 762 819
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  reply	other threads:[~2020-03-11  3:32 UTC|newest]

Thread overview: 130+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-21  3:26 [PATCH v3 00/27] Add support for OpenCAPI Persistent Memory devices Alastair D'Silva
2020-02-21  3:26 ` [PATCH v3 01/27] powerpc: Add OPAL calls for LPC memory alloc/release Alastair D'Silva
2020-02-24  5:49   ` Andrew Donnellan
2020-02-24  5:50     ` Alastair D'Silva
2020-02-21  3:26 ` [PATCH v3 02/27] mm/memory_hotplug: Allow check_hotplug_memory_addressable to be called from drivers Alastair D'Silva
2020-02-21  7:03   ` Andrew Donnellan
2020-02-21  3:26 ` [PATCH v3 03/27] powerpc: Map & release OpenCAPI LPC memory Alastair D'Silva
2020-02-24  2:51   ` Andrew Donnellan
2020-02-24  5:49     ` Andrew Donnellan
2020-02-25 10:02   ` Frederic Barrat
2020-02-26  0:19     ` Alastair D'Silva
2020-03-03  6:10   ` Andrew Donnellan
2020-03-04  5:33     ` Alastair D'Silva
2020-02-21  3:26 ` [PATCH v3 04/27] ocxl: Remove unnecessary externs Alastair D'Silva
2020-02-21  6:06   ` Andrew Donnellan
2020-02-25 13:23   ` Frederic Barrat
2020-02-26  8:14   ` Baoquan He
2020-02-26  8:26     ` Alastair D'Silva
2020-02-26  9:01       ` Greg Kurz
2020-02-26 14:15         ` 'Baoquan He'
2020-02-26 14:20           ` Greg Kurz
2020-02-26 14:54             ` 'Baoquan He'
2020-02-21  3:26 ` [PATCH v3 05/27] ocxl: Address kernel doc errors & warnings Alastair D'Silva
2020-02-24  2:11   ` Andrew Donnellan
2020-02-21  3:26 ` [PATCH v3 06/27] ocxl: Tally up the LPC memory on a link & allow it to be mapped Alastair D'Silva
2020-02-24  5:25   ` Andrew Donnellan
2020-02-24  5:36     ` Alastair D'Silva
2020-02-25 16:30   ` Frederic Barrat
2020-02-26  0:29     ` Alastair D'Silva
2020-02-21  3:27 ` [PATCH v3 07/27] ocxl: Add functions to map/unmap LPC memory Alastair D'Silva
2020-02-24  6:02   ` Andrew Donnellan
2020-02-24  6:08     ` Alastair D'Silva
2020-02-25 17:01   ` Frederic Barrat
2020-02-21  3:27 ` [PATCH v3 08/27] ocxl: Emit a log message showing how much LPC memory was detected Alastair D'Silva
2020-02-24  6:06   ` Andrew Donnellan
2020-02-24  6:10     ` Alastair D'Silva
2020-02-24  6:13       ` Andrew Donnellan
2020-02-25 17:03   ` Frederic Barrat
2020-02-21  3:27 ` [PATCH v3 09/27] ocxl: Save the device serial number in ocxl_fn Alastair D'Silva
2020-02-21  3:27 ` [PATCH v3 10/27] powerpc: Add driver for OpenCAPI Persistent Memory Alastair D'Silva
2020-02-26  5:07   ` Andrew Donnellan
2020-02-26  5:49     ` Alastair D'Silva
2020-02-27 20:44   ` Frederic Barrat
2020-02-28  0:54     ` Alastair D'Silva
2020-02-28 18:32   ` Frederic Barrat
2020-02-21  3:27 ` [PATCH v3 11/27] powerpc: Enable the OpenCAPI Persistent Memory driver for powernv_defconfig Alastair D'Silva
2020-02-25  3:01   ` Andrew Donnellan
2020-02-21  3:27 ` [PATCH v3 12/27] powerpc/powernv/pmem: Add register addresses & status values to the header Alastair D'Silva
2020-02-27  5:08   ` Andrew Donnellan
2020-02-27  5:16     ` Alastair D'Silva
2020-02-21  3:27 ` [PATCH v3 13/27] powerpc/powernv/pmem: Read the capability registers & wait for device ready Alastair D'Silva
2020-02-27  3:54   ` Andrew Donnellan
2020-02-27  3:58     ` Alastair D'Silva
2020-03-02 17:51   ` Frederic Barrat
2020-03-04  4:15     ` Alastair D'Silva
2020-02-21  3:27 ` [PATCH v3 14/27] powerpc/powernv/pmem: Add support for Admin commands Alastair D'Silva
2020-02-27  8:22   ` Andrew Donnellan
2020-02-27  8:27     ` Andrew Donnellan
2020-02-27 23:54       ` Alastair D'Silva
2020-02-27 23:51     ` Alastair D'Silva
2020-02-27 17:01   ` Dan Williams
2020-02-27 23:57     ` Alastair D'Silva
2020-02-21  3:27 ` [PATCH v3 15/27] powerpc/powernv/pmem: Add support for near storage commands Alastair D'Silva
2020-02-27  8:30   ` Andrew Donnellan
2020-02-27 23:56     ` Alastair D'Silva
2020-02-27 17:02   ` Dan Williams
2020-03-02 17:58   ` Frederic Barrat
2020-03-02 18:42     ` Dan Williams
2020-03-04  4:42       ` Alastair D'Silva
2020-02-21  3:27 ` [PATCH v3 16/27] powerpc/powernv/pmem: Register a character device for userspace to interact with Alastair D'Silva
2020-03-02  5:34   ` Andrew Donnellan
2020-03-02  6:05     ` Alastair D'Silva
2020-03-03  9:28   ` Frederic Barrat
2020-03-05  3:38     ` Alastair D'Silva
2020-02-21  3:27 ` [PATCH v3 17/27] powerpc/powernv/pmem: Implement the Read Error Log command Alastair D'Silva
2020-03-03 10:36   ` Frederic Barrat
2020-03-05  4:31     ` Alastair D'Silva
2020-03-05  9:33       ` Frederic Barrat
2020-03-04  5:58   ` Andrew Donnellan
2020-02-21  3:27 ` [PATCH v3 18/27] powerpc/powernv/pmem: Add controller dump IOCTLs Alastair D'Silva
2020-03-03 18:04   ` Frederic Barrat
2020-03-05 23:37     ` Alastair D'Silva
2020-03-04  6:53   ` Andrew Donnellan
2020-03-06  3:34     ` Alastair D'Silva
2020-02-21  3:27 ` [PATCH v3 19/27] powerpc/powernv/pmem: Add an IOCTL to report controller statistics Alastair D'Silva
2020-03-04  9:25   ` Frederic Barrat
2020-03-12  0:15     ` Alastair D'Silva
2020-03-05  0:46   ` Andrew Donnellan
2020-03-12  4:47     ` Alastair D'Silva
2020-02-21  3:27 ` [PATCH v3 20/27] powerpc/powernv/pmem: Forward events to userspace Alastair D'Silva
2020-03-03  7:02   ` Andrew Donnellan
2020-03-04  5:48     ` Alastair D'Silva
2020-03-04 11:00   ` Frederic Barrat
2020-03-11  3:32     ` Alastair D'Silva [this message]
2020-02-21  3:27 ` [PATCH v3 21/27] powerpc/powernv/pmem: Add an IOCTL to request controller health & perf data Alastair D'Silva
2020-02-28  6:12   ` Andrew Donnellan
2020-03-02  5:40     ` Alastair D'Silva
2020-03-04 11:06     ` Frederic Barrat
2020-03-11  3:38       ` Alastair D'Silva
2020-02-21  3:27 ` [PATCH v3 22/27] powerpc/powernv/pmem: Implement the heartbeat command Alastair D'Silva
2020-02-28  6:20   ` Andrew Donnellan
2020-03-04 14:25   ` Frederic Barrat
2020-02-21  3:27 ` [PATCH v3 23/27] powerpc/powernv/pmem: Add debug IOCTLs Alastair D'Silva
2020-03-04 15:21   ` Frederic Barrat
2020-03-12  4:24     ` Alastair D'Silva
2020-03-05  3:11   ` Andrew Donnellan
2020-03-12  4:58     ` Alastair D'Silva
2020-02-21  3:27 ` [PATCH v3 24/27] powerpc/powernv/pmem: Expose SMART data via ndctl Alastair D'Silva
2020-03-04 15:40   ` Frederic Barrat
2020-03-05  3:36   ` Andrew Donnellan
2020-03-12 23:14     ` Alastair D'Silva
2020-02-21  3:27 ` [PATCH v3 25/27] powerpc/powernv/pmem: Expose the serial number in sysfs Alastair D'Silva
2020-02-28  6:25   ` Andrew Donnellan
2020-02-28  7:15     ` Greg Kroah-Hartman
2020-03-01 23:42       ` Alastair D'Silva
2020-03-02  5:38         ` Alastair D'Silva
2020-02-21  3:27 ` [PATCH v3 26/27] powerpc/powernv/pmem: Expose the firmware version " Alastair D'Silva
2020-03-02  7:35   ` Andrew Donnellan
2020-03-04  4:11     ` Alastair D'Silva
2020-02-21  3:27 ` [PATCH v3 27/27] MAINTAINERS: Add myself & nvdimm/ocxl to ocxl Alastair D'Silva
2020-02-21  5:35   ` Andrew Donnellan
2020-02-21 16:21 ` [PATCH v3 00/27] Add support for OpenCAPI Persistent Memory devices Dan Williams
2020-02-21 16:24   ` Dan Williams
2020-02-24  4:34   ` Alastair D'Silva
2020-02-24  4:37     ` Matthew Wilcox
2020-02-24  4:42       ` Alastair D'Silva
2020-02-24  6:51         ` Oliver O'Halloran
2020-02-26  0:13           ` Alastair D'Silva
2020-02-26  0:32             ` Dan Williams
2020-02-26  0:35               ` Alastair D'Silva

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