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From: Sunil Muthuswamy <sunilmut@microsoft.com>
To: Nuno Das Neves <nunodasneves@linux.microsoft.com>,
	"linux-hyperv@vger.kernel.org" <linux-hyperv@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Cc: "virtualization@lists.linux-foundation.org" 
	<virtualization@lists.linux-foundation.org>,
	Michael Kelley <mikelley@microsoft.com>,
	"viremana@linux.microsoft.com" <viremana@linux.microsoft.com>,
	"wei.liu@kernel.org" <wei.liu@kernel.org>,
	vkuznets <vkuznets@redhat.com>,
	Lillian Grassin-Drake <Lillian.GrassinDrake@microsoft.com>,
	KY Srinivasan <kys@microsoft.com>
Subject: RE: [PATCH 01/19] x86/hyperv: convert hyperv statuses to linux error codes
Date: Thu, 10 Jun 2021 18:22:05 +0000	[thread overview]
Message-ID: <MW4PR21MB200424DC6ACC9EAF84A56D81C0359@MW4PR21MB2004.namprd21.prod.outlook.com> (raw)
In-Reply-To: <1622241819-21155-2-git-send-email-nunodasneves@linux.microsoft.com>

> -----Original Message-----
> From: Nuno Das Neves <nunodasneves@linux.microsoft.com>
> Sent: Friday, May 28, 2021 3:43 PM
> To: linux-hyperv@vger.kernel.org; linux-kernel@vger.kernel.org
> Cc: virtualization@lists.linux-foundation.org; Michael Kelley <mikelley@microsoft.com>; viremana@linux.microsoft.com; Sunil
> Muthuswamy <sunilmut@microsoft.com>; wei.liu@kernel.org; vkuznets <vkuznets@redhat.com>; Lillian Grassin-Drake
> <Lillian.GrassinDrake@microsoft.com>; KY Srinivasan <kys@microsoft.com>
> Subject: [PATCH 01/19] x86/hyperv: convert hyperv statuses to linux error codes
> 
> Return linux-friendly error codes from hypercall wrapper functions.
> This will be needed in the mshv module.
> 
> Signed-off-by: Nuno Das Neves <nunodasneves@linux.microsoft.com>
> ---
>  arch/x86/hyperv/hv_proc.c         | 30 ++++++++++++++++++++++++++---
>  arch/x86/include/asm/mshyperv.h   |  1 +
>  include/asm-generic/hyperv-tlfs.h | 32 +++++++++++++++++++++----------
>  3 files changed, 50 insertions(+), 13 deletions(-)
> 
> diff --git a/arch/x86/hyperv/hv_proc.c b/arch/x86/hyperv/hv_proc.c
> index 68a0843d4750..59cf9a9e0975 100644
> --- a/arch/x86/hyperv/hv_proc.c
> +++ b/arch/x86/hyperv/hv_proc.c
> @@ -14,6 +14,30 @@
> 
>  #include <asm/trace/hyperv.h>
> 
> +int hv_status_to_errno(u64 hv_status)
> +{
> +	switch (hv_result(hv_status)) {
> +	case HV_STATUS_SUCCESS:
> +		return 0;
> +	case HV_STATUS_INVALID_PARAMETER:
> +	case HV_STATUS_UNKNOWN_PROPERTY:
> +	case HV_STATUS_PROPERTY_VALUE_OUT_OF_RANGE:
> +	case HV_STATUS_INVALID_VP_INDEX:
> +	case HV_STATUS_INVALID_REGISTER_VALUE:
> +	case HV_STATUS_INVALID_LP_INDEX:
> +		return -EINVAL;
> +	case HV_STATUS_ACCESS_DENIED:
> +	case HV_STATUS_OPERATION_DENIED:
> +		return -EACCES;
> +	case HV_STATUS_NOT_ACKNOWLEDGED:
> +	case HV_STATUS_INVALID_VP_STATE:
> +	case HV_STATUS_INVALID_PARTITION_STATE:
> +		return -EBADFD;
> +	}
> +	return -ENOTRECOVERABLE;
> +}
> +EXPORT_SYMBOL_GPL(hv_status_to_errno);
> +
>  /*
>   * See struct hv_deposit_memory. The first u64 is partition ID, the rest
>   * are GPAs.
> @@ -94,7 +118,7 @@ int hv_call_deposit_pages(int node, u64 partition_id, u32 num_pages)
>  	local_irq_restore(flags);
>  	if (!hv_result_success(status)) {
>  		pr_err("Failed to deposit pages: %lld\n", status);
> -		ret = hv_result(status);
> +		ret = hv_status_to_errno(status);
>  		goto err_free_allocations;
>  	}
> 
> @@ -150,7 +174,7 @@ int hv_call_add_logical_proc(int node, u32 lp_index, u32 apic_id)
>  			if (!hv_result_success(status)) {
>  				pr_err("%s: cpu %u apic ID %u, %lld\n", __func__,
>  				       lp_index, apic_id, status);
> -				ret = hv_result(status);
> +				ret = hv_status_to_errno(status);
>  			}
>  			break;
>  		}
> @@ -200,7 +224,7 @@ int hv_call_create_vp(int node, u64 partition_id, u32 vp_index, u32 flags)
>  			if (!hv_result_success(status)) {
>  				pr_err("%s: vcpu %u, lp %u, %lld\n", __func__,
>  				       vp_index, flags, status);
> -				ret = hv_result(status);
> +				ret = hv_status_to_errno(status);
>  			}
>  			break;
>  		}
> diff --git a/arch/x86/include/asm/mshyperv.h b/arch/x86/include/asm/mshyperv.h
> index 67ff0d637e55..c6eb01f3864d 100644
> --- a/arch/x86/include/asm/mshyperv.h
> +++ b/arch/x86/include/asm/mshyperv.h
> @@ -169,6 +169,7 @@ int hyperv_flush_guest_mapping_range(u64 as,
>  int hyperv_fill_flush_guest_mapping_list(
>  		struct hv_guest_mapping_flush_list *flush,
>  		u64 start_gfn, u64 end_gfn);
> +int hv_status_to_errno(u64 hv_status);
> 
>  extern bool hv_root_partition;
> 
> diff --git a/include/asm-generic/hyperv-tlfs.h b/include/asm-generic/hyperv-tlfs.h
> index 515c3fb06ab3..fe6d41d0b114 100644
> --- a/include/asm-generic/hyperv-tlfs.h
> +++ b/include/asm-generic/hyperv-tlfs.h
> @@ -189,16 +189,28 @@ enum HV_GENERIC_SET_FORMAT {
>  #define HV_HYPERCALL_REP_START_MASK	GENMASK_ULL(59, 48)
> 
>  /* hypercall status code */
> -#define HV_STATUS_SUCCESS			0
> -#define HV_STATUS_INVALID_HYPERCALL_CODE	2
> -#define HV_STATUS_INVALID_HYPERCALL_INPUT	3
> -#define HV_STATUS_INVALID_ALIGNMENT		4
> -#define HV_STATUS_INVALID_PARAMETER		5
> -#define HV_STATUS_OPERATION_DENIED		8
> -#define HV_STATUS_INSUFFICIENT_MEMORY		11
> -#define HV_STATUS_INVALID_PORT_ID		17
> -#define HV_STATUS_INVALID_CONNECTION_ID		18
> -#define HV_STATUS_INSUFFICIENT_BUFFERS		19
> +#define HV_STATUS_SUCCESS			0x0
> +#define HV_STATUS_INVALID_HYPERCALL_CODE	0x2
> +#define HV_STATUS_INVALID_HYPERCALL_INPUT	0x3
> +#define HV_STATUS_INVALID_ALIGNMENT		0x4
> +#define HV_STATUS_INVALID_PARAMETER		0x5
> +#define HV_STATUS_ACCESS_DENIED			0x6
> +#define HV_STATUS_INVALID_PARTITION_STATE	0x7
> +#define HV_STATUS_OPERATION_DENIED		0x8
> +#define HV_STATUS_UNKNOWN_PROPERTY		0x9
> +#define HV_STATUS_PROPERTY_VALUE_OUT_OF_RANGE	0xA
> +#define HV_STATUS_INSUFFICIENT_MEMORY		0xB
> +#define HV_STATUS_INVALID_PARTITION_ID		0xD
> +#define HV_STATUS_INVALID_VP_INDEX		0xE
> +#define HV_STATUS_NOT_FOUND			0x10
> +#define HV_STATUS_INVALID_PORT_ID		0x11
> +#define HV_STATUS_INVALID_CONNECTION_ID		0x12
> +#define HV_STATUS_INSUFFICIENT_BUFFERS		0x13
> +#define HV_STATUS_NOT_ACKNOWLEDGED		0x14
> +#define HV_STATUS_INVALID_VP_STATE		0x15
> +#define HV_STATUS_NO_RESOURCES			0x1D
> +#define HV_STATUS_INVALID_LP_INDEX		0x41
> +#define HV_STATUS_INVALID_REGISTER_VALUE	0x50
> 
>  /*
>   * The Hyper-V TimeRefCount register and the TSC
> --
> 2.25.1

Reviewed-by: Sunil Muthuswamy <sunilmut@microsoft.com>



  reply	other threads:[~2021-06-10 18:22 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-28 22:43 [PATCH 00/19] Microsoft Hypervisor root partition ioctl interface Nuno Das Neves
2021-05-28 22:43 ` [PATCH 01/19] x86/hyperv: convert hyperv statuses to linux error codes Nuno Das Neves
2021-06-10 18:22   ` Sunil Muthuswamy [this message]
2021-05-28 22:43 ` [PATCH 02/19] asm-generic/hyperv: convert hyperv statuses to strings Nuno Das Neves
2021-06-10 18:42   ` Sunil Muthuswamy
2021-06-23 22:15     ` Nuno Das Neves
2021-05-28 22:43 ` [PATCH 03/19] drivers/hv: minimal mshv module (/dev/mshv/) Nuno Das Neves
2021-05-29  0:01   ` Randy Dunlap
2021-06-01 19:45     ` Nuno Das Neves
2021-06-03  1:28   ` Sunil Muthuswamy
2021-06-23 22:05     ` Nuno Das Neves
2021-06-27 12:00   ` Wei Liu
2021-07-06 15:41     ` Nuno Das Neves
2021-05-28 22:43 ` [PATCH 04/19] drivers/hv: check extension ioctl Nuno Das Neves
2021-05-28 22:43 ` [PATCH 05/19] drivers/hv: create partition ioctl Nuno Das Neves
2021-05-28 22:43 ` [PATCH 06/19] drivers/hv: create, initialize, finalize, delete partition hypercalls Nuno Das Neves
2021-06-01  7:59   ` Wei Liu
2021-06-01 19:52     ` Nuno Das Neves
2021-05-28 22:43 ` [PATCH 07/19] drivers/hv: withdraw memory hypercall Nuno Das Neves
2021-05-28 22:43 ` [PATCH 08/19] drivers/hv: map and unmap guest memory Nuno Das Neves
2021-05-28 22:43 ` [PATCH 09/19] drivers/hv: create vcpu ioctl Nuno Das Neves
2021-05-28 22:43 ` [PATCH 10/19] drivers/hv: get and set vcpu registers ioctls Nuno Das Neves
2021-05-29  4:28   ` kernel test robot
2021-05-28 22:43 ` [PATCH 11/19] drivers/hv: set up synic pages for intercept messages Nuno Das Neves
2021-05-29  5:44   ` kernel test robot
2021-05-28 22:43 ` [PATCH 12/19] drivers/hv: run vp ioctl and isr Nuno Das Neves
2021-05-29 21:55   ` Wei Liu
2021-06-01 19:49     ` Nuno Das Neves
2021-05-28 22:43 ` [PATCH 13/19] drivers/hv: install intercept ioctl Nuno Das Neves
2021-05-28 22:43 ` [PATCH 14/19] drivers/hv: assert interrupt ioctl Nuno Das Neves
2021-05-28 22:43 ` [PATCH 15/19] drivers/hv: get and set vp state ioctls Nuno Das Neves
2021-05-28 22:43 ` [PATCH 16/19] drivers/hv: mmap vp register page Nuno Das Neves
2021-05-28 22:43 ` [PATCH 17/19] drivers/hv: get and set partition property ioctls Nuno Das Neves
2021-05-28 22:43 ` [PATCH 18/19] drivers/hv: Add enlightenment bits to create partition ioctl Nuno Das Neves
2021-05-28 22:43 ` [PATCH 19/19] drivers/hv: Translate GVA to GPA Nuno Das Neves
2021-06-10  9:22 ` [PATCH 00/19] Microsoft Hypervisor root partition ioctl interface Vitaly Kuznetsov
2021-06-23 22:18   ` Nuno Das Neves
2021-08-05 21:23 [PATCH v2 " Nuno Das Neves
2021-08-05 21:23 ` [PATCH 01/19] x86/hyperv: convert hyperv statuses to linux error codes Nuno Das Neves

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