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From: Frederic Barrat <fbarrat@linux.ibm.com>
To: "Alastair D'Silva" <alastair@au1.ibm.com>, alastair@d-silva.org
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 23/27] powerpc/powernv/pmem: Add debug IOCTLs
Date: Wed, 4 Mar 2020 16:21:50 +0100	[thread overview]
Message-ID: <7e0e3b71-d70c-1dee-b630-0c33596b7223@linux.ibm.com> (raw)
In-Reply-To: <20200221032720.33893-24-alastair@au1.ibm.com>



Le 21/02/2020 à 04:27, Alastair D'Silva a écrit :
> From: Alastair D'Silva <alastair@d-silva.org>
> 
> These IOCTLs provide low level access to the card to aid in debugging
> controller/FPGA firmware.
> 
> Signed-off-by: Alastair D'Silva <alastair@d-silva.org>
> ---
>   arch/powerpc/platforms/powernv/pmem/Kconfig |   6 +
>   arch/powerpc/platforms/powernv/pmem/ocxl.c  | 249 ++++++++++++++++++++
>   include/uapi/nvdimm/ocxl-pmem.h             |  32 +++
>   3 files changed, 287 insertions(+)
> 
> diff --git a/arch/powerpc/platforms/powernv/pmem/Kconfig b/arch/powerpc/platforms/powernv/pmem/Kconfig
> index c5d927520920..3f44429d70c9 100644
> --- a/arch/powerpc/platforms/powernv/pmem/Kconfig
> +++ b/arch/powerpc/platforms/powernv/pmem/Kconfig
> @@ -12,4 +12,10 @@ config OCXL_PMEM
>   
>   	  Select N if unsure.
>   
> +config OCXL_PMEM_DEBUG
> +	bool "OpenCAPI Persistent Memory debugging"
> +	depends on OCXL_PMEM
> +	help
> +	  Enables low level IOCTLs for OpenCAPI Persistent Memory firmware development
> +
>   endif
> diff --git a/arch/powerpc/platforms/powernv/pmem/ocxl.c b/arch/powerpc/platforms/powernv/pmem/ocxl.c
> index e01f6f9fc180..d4ce5e9e0521 100644
> --- a/arch/powerpc/platforms/powernv/pmem/ocxl.c
> +++ b/arch/powerpc/platforms/powernv/pmem/ocxl.c
> @@ -1050,6 +1050,235 @@ int req_controller_health_perf(struct ocxlpmem *ocxlpmem)
>   				      GLOBAL_MMIO_HCI_REQ_HEALTH_PERF);
>   }
>   
> +#ifdef CONFIG_OCXL_PMEM_DEBUG
> +/**
> + * enable_fwdebug() - Enable FW debug on the controller
> + * @ocxlpmem: the device metadata
> + * Return: 0 on success, negative on failure
> + */
> +static int enable_fwdebug(const struct ocxlpmem *ocxlpmem)
> +{
> +	return ocxl_global_mmio_set64(ocxlpmem->ocxl_afu, GLOBAL_MMIO_HCI,
> +				      OCXL_LITTLE_ENDIAN,
> +				      GLOBAL_MMIO_HCI_FW_DEBUG);
> +}
> +
> +/**
> + * disable_fwdebug() - Disable FW debug on the controller
> + * @ocxlpmem: the device metadata
> + * Return: 0 on success, negative on failure
> + */
> +static int disable_fwdebug(const struct ocxlpmem *ocxlpmem)
> +{
> +	return ocxl_global_mmio_set64(ocxlpmem->ocxl_afu, GLOBAL_MMIO_HCIC,
> +				      OCXL_LITTLE_ENDIAN,
> +				      GLOBAL_MMIO_HCI_FW_DEBUG);
> +}
> +
> +static int ioctl_fwdebug(struct ocxlpmem *ocxlpmem,
> +			     struct ioctl_ocxl_pmem_fwdebug __user *uarg)
> +{
> +	struct ioctl_ocxl_pmem_fwdebug args;
> +	u64 val;
> +	int i;
> +	int rc;
> +
> +	if (copy_from_user(&args, uarg, sizeof(args)))
> +		return -EFAULT;
> +
> +	// Buffer size must be a multiple of 8
> +	if ((args.buf_size & 0x07))
> +		return -EINVAL;
> +
> +	if (args.buf_size > ocxlpmem->admin_command.data_size)
> +		return -EINVAL;
> +
> +	mutex_lock(&ocxlpmem->admin_command.lock);
> +
> +	rc = enable_fwdebug(ocxlpmem);
> +	if (rc)
> +		goto out;
> +
> +	rc = admin_command_request(ocxlpmem, ADMIN_COMMAND_FW_DEBUG);
> +	if (rc)
> +		goto out;
> +
> +	// Write DebugAction & FunctionCode
> +	val = ((u64)args.debug_action << 56) | ((u64)args.function_code << 40);
> +
> +	rc = ocxl_global_mmio_write64(ocxlpmem->ocxl_afu,
> +				      ocxlpmem->admin_command.request_offset + 0x08,
> +				      OCXL_LITTLE_ENDIAN, val);
> +	if (rc)
> +		goto out;
> +
> +	rc = ocxl_global_mmio_write64(ocxlpmem->ocxl_afu,
> +				      ocxlpmem->admin_command.request_offset + 0x10,
> +				      OCXL_LITTLE_ENDIAN, args.debug_parameter_1);
> +	if (rc)
> +		goto out;
> +
> +	rc = ocxl_global_mmio_write64(ocxlpmem->ocxl_afu,
> +				      ocxlpmem->admin_command.request_offset + 0x18,
> +				      OCXL_LITTLE_ENDIAN, args.debug_parameter_2);
> +	if (rc)
> +		goto out;
> +
> +	for (i = 0x20; i < 0x38; i += 0x08)
> +		rc = ocxl_global_mmio_write64(ocxlpmem->ocxl_afu,
> +					      ocxlpmem->admin_command.request_offset + i,
> +					      OCXL_LITTLE_ENDIAN, 0);
> +	if (rc)
> +		goto out;


rc is the for loop body. The rc test is not.


> +
> +
> +	// Populate admin command buffer
> +	if (args.buf_size) {
> +		for (i = 0; i < args.buf_size; i += sizeof(u64)) {
> +			u64 val;
> +
> +			if (copy_from_user(&val, &args.buf[i], sizeof(u64)))
> +				return -EFAULT;


need to get rc and goto out because of the mutex


> +
> +			rc = ocxl_global_mmio_write64(ocxlpmem->ocxl_afu,
> +						      ocxlpmem->admin_command.data_offset + i,
> +						      OCXL_HOST_ENDIAN, val);
> +			if (rc)
> +				goto out;
> +		}
> +	}
> +
> +	rc = admin_command_execute(ocxlpmem);
> +	if (rc)
> +		goto out;
> +
> +	rc = admin_command_complete_timeout(ocxlpmem,
> +					    ocxlpmem->timeouts[ADMIN_COMMAND_FW_DEBUG]);
> +	if (rc < 0)
> +		goto out;
> +
> +	rc = admin_response(ocxlpmem);
> +	if (rc < 0)
> +		goto out;
> +	if (rc != STATUS_SUCCESS) {
> +		warn_status(ocxlpmem, "Unexpected status from FW Debug", rc);
> +		goto out;
> +	}
> +
> +	if (args.buf_size) {
> +		for (i = 0; i < args.buf_size; i += sizeof(u64)) {
> +			u64 val;
> +
> +			rc = ocxl_global_mmio_read64(ocxlpmem->ocxl_afu,
> +						     ocxlpmem->admin_command.data_offset + i,
> +						     OCXL_HOST_ENDIAN, &val);
> +			if (rc)
> +				goto out;
> +
> +			if (copy_to_user(&args.buf[i], &val, sizeof(u64))) {
> +				rc = -EFAULT;
> +				goto out;
> +			}
> +		}
> +	}
> +
> +	rc = admin_response_handled(ocxlpmem);
> +	if (rc)
> +		goto out;
> +
> +	rc = disable_fwdebug(ocxlpmem);
> +	if (rc)
> +		goto out;
> +
> +out:
> +	mutex_unlock(&ocxlpmem->admin_command.lock);
> +	return rc;
> +}
> +
> +static int ioctl_shutdown(struct ocxlpmem *ocxlpmem)
> +{
> +	int rc;
> +
> +	mutex_lock(&ocxlpmem->admin_command.lock);
> +
> +	rc = admin_command_request(ocxlpmem, ADMIN_COMMAND_SHUTDOWN);
> +	if (rc)
> +		goto out;
> +
> +	rc = admin_command_execute(ocxlpmem);
> +	if (rc)
> +		goto out;
> +
> +	rc = admin_command_complete_timeout(ocxlpmem, ADMIN_COMMAND_SHUTDOWN);
> +	if (rc < 0) {
> +		dev_warn(&ocxlpmem->dev, "Shutdown timed out\n");
> +		goto out;
> +	}
> +
> +	rc = 0;
> +	goto out;


We can remove that goto.

No admin_response_handled()? Is that shutting down the full adapter and 
we have nobody to talk to? What happens next?


> +
> +out:
> +	mutex_unlock(&ocxlpmem->admin_command.lock);
> +	return rc;
> +}
> +
> +static int ioctl_mmio_write(struct ocxlpmem *ocxlpmem,
> +				struct ioctl_ocxl_pmem_mmio __user *uarg)
> +{
> +	struct scm_ioctl_mmio args;
> +
> +	if (copy_from_user(&args, uarg, sizeof(args)))
> +		return -EFAULT;
> +
> +	return ocxl_global_mmio_write64(ocxlpmem->ocxl_afu, args.address,
> +					OCXL_LITTLE_ENDIAN, args.val);
> +}
> +
> +static int ioctl_mmio_read(struct ocxlpmem *ocxlpmem,
> +				     struct ioctl_ocxl_pmem_mmio __user *uarg)
> +{
> +	struct ioctl_ocxl_pmem_mmio args;
> +	int rc;
> +
> +	if (copy_from_user(&args, uarg, sizeof(args)))
> +		return -EFAULT;
> +
> +	rc = ocxl_global_mmio_read64(ocxlpmem->ocxl_afu, args.address,
> +				     OCXL_LITTLE_ENDIAN, &args.val);
> +	if (rc)
> +		return rc;
> +
> +	if (copy_to_user(uarg, &args, sizeof(args)))
> +		return -EFAULT;
> +
> +	return 0;
> +}
> +#else /* CONFIG_OCXL_PMEM_DEBUG */
> +static int ioctl_fwdebug(struct ocxlpmem *ocxlpmem,
> +			     struct ioctl_ocxl_pmem_fwdebug __user *uarg)
> +{
> +	return -EPERM;
> +}
> +
> +static int ioctl_shutdown(struct ocxlpmem *ocxlpmem)
> +{
> +	return -EPERM;
> +}
> +
> +static int ioctl_mmio_write(struct ocxlpmem *ocxlpmem,
> +				struct ioctl_ocxl_pmem_mmio __user *uarg)
> +{
> +	return -EPERM;
> +}
> +
> +static int ioctl_mmio_read(struct ocxlpmem *ocxlpmem,
> +			       struct ioctl_ocxl_pmem_mmio __user *uarg)
> +{
> +	return -EPERM;
> +}


The 'else' clause could be dropped, the ioctls will return EINVAL, which 
is fine, I think.



> +#endif /* CONFIG_OCXL_PMEM_DEBUG */
> +
>   static long file_ioctl(struct file *file, unsigned int cmd, unsigned long args)
>   {
>   	struct ocxlpmem *ocxlpmem = file->private_data;
> @@ -1091,6 +1320,26 @@ static long file_ioctl(struct file *file, unsigned int cmd, unsigned long args)
>   	case IOCTL_OCXL_PMEM_REQUEST_HEALTH:
>   		rc = req_controller_health_perf(ocxlpmem);
>   		break;
> +
> +	case IOCTL_OCXL_PMEM_FWDEBUG:
> +		rc = ioctl_fwdebug(ocxlpmem,
> +				   (struct ioctl_ocxl_pmem_fwdebug __user *)args);
> +		break;
> +
> +	case IOCTL_OCXL_PMEM_SHUTDOWN:
> +		rc = ioctl_shutdown(ocxlpmem);
> +		break;
> +
> +	case IOCTL_OCXL_PMEM_MMIO_WRITE:
> +		rc = ioctl_mmio_write(ocxlpmem,
> +				      (struct ioctl_ocxl_pmem_mmio __user *)args);
> +		break;
> +
> +	case IOCTL_OCXL_PMEM_MMIO_READ:
> +		rc = ioctl_mmio_read(ocxlpmem,
> +				     (struct ioctl_ocxl_pmem_mmio __user *)args);
> +		break;
> +
>   	}
>   
>   	return rc;
> diff --git a/include/uapi/nvdimm/ocxl-pmem.h b/include/uapi/nvdimm/ocxl-pmem.h
> index 0d03abb44001..e20a4f8be82a 100644
> --- a/include/uapi/nvdimm/ocxl-pmem.h
> +++ b/include/uapi/nvdimm/ocxl-pmem.h
> @@ -6,6 +6,28 @@
>   #include <linux/types.h>
>   #include <linux/ioctl.h>
>   
> +enum ocxlpmem_fwdebug_action {
> +	OCXL_PMEM_FWDEBUG_READ_CONTROLLER_MEMORY = 0x01,
> +	OCXL_PMEM_FWDEBUG_WRITE_CONTROLLER_MEMORY = 0x02,
> +	OCXL_PMEM_FWDEBUG_ENABLE_FUNCTION = 0x03,
> +	OCXL_PMEM_FWDEBUG_DISABLE_FUNCTION = 0x04,
> +	OCXL_PMEM_FWDEBUG_GET_PEL = 0x05, // Retrieve Persistent Error Log
> +};
> +
> +struct ioctl_ocxl_pmem_buffer_info {
> +	__u32	admin_command_buffer_size; // out
> +	__u32	near_storage_buffer_size; // out
> +};
> +
> +struct ioctl_ocxl_pmem_fwdebug { // All args are inputs
> +	enum ocxlpmem_fwdebug_action debug_action;


More kernel ABI problems. My interpretation of the "enumeration 
specifiers" section of C99 is that we can't rely on the size of the enum.


> +	__u16 function_code;
> +	__u16 buf_size; // Size of optional data buffer
> +	__u64 debug_parameter_1;
> +	__u64 debug_parameter_2;
> +	__u8 *buf; // Pointer to optional in/out data buffer
> +};
> +
>   #define OCXL_PMEM_ERROR_LOG_ACTION_RESET	(1 << (32-32))
>   #define OCXL_PMEM_ERROR_LOG_ACTION_CHKFW	(1 << (53-32))
>   #define OCXL_PMEM_ERROR_LOG_ACTION_REPLACE	(1 << (54-32))
> @@ -66,6 +88,11 @@ struct ioctl_ocxl_pmem_controller_stats {
>   	__u64 cache_write_latency; /* nanoseconds */
>   };
>   
> +struct ioctl_ocxl_pmem_mmio {
> +	__u64 address; /* Offset in global MMIO space */
> +	__u64 val; /* value to write/was read */
> +};


Can we group all the debug data structures together in the header file, 
with a comment indicating that they may not be available in the kernel, 
depending on the config?

   Fred


> +
>   struct ioctl_ocxl_pmem_eventfd {
>   	__s32 eventfd;
>   	__u32 reserved;
> @@ -92,4 +119,9 @@ struct ioctl_ocxl_pmem_eventfd {
>   #define IOCTL_OCXL_PMEM_EVENT_CHECK			_IOR(OCXL_PMEM_MAGIC, 0x07, __u64)
>   #define IOCTL_OCXL_PMEM_REQUEST_HEALTH			_IO(OCXL_PMEM_MAGIC, 0x08)
>   
> +#define IOCTL_OCXL_PMEM_FWDEBUG		_IOWR(OCXL_PMEM_MAGIC, 0xf0, struct ioctl_ocxl_pmem_fwdebug)
> +#define IOCTL_OCXL_PMEM_MMIO_WRITE	_IOW(OCXL_PMEM_MAGIC, 0xf1, struct ioctl_ocxl_pmem_mmio)
> +#define IOCTL_OCXL_PMEM_MMIO_READ	_IOWR(OCXL_PMEM_MAGIC, 0xf2, struct ioctl_ocxl_pmem_mmio)
> +#define IOCTL_OCXL_PMEM_SHUTDOWN	_IO(OCXL_PMEM_MAGIC, 0xf3)
> +
>   #endif /* _UAPI_OCXL_SCM_H */
> 
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  reply	other threads:[~2020-03-04 15:22 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
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 [this message]
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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