linux-kernel - Re: [PATCH 06/17] mshv: SynIC port and connection hypercalls

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Date:   Tue, 29 Jun 2021 12:21:22 -0400
From:   Vineeth Pillai <viremana@...ux.microsoft.com>
To:     Wei Liu <wei.liu@...nel.org>
Cc:     Nuno Das Neves <nunodasneves@...ux.microsoft.com>,
        Sunil Muthuswamy <sunilmut@...rosoft.com>,
        Michael Kelley <mikelley@...rosoft.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        "K. Y. Srinivasan" <kys@...rosoft.com>,
        virtualization@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org, linux-hyperv@...r.kernel.org
Subject: Re: [PATCH 06/17] mshv: SynIC port and connection hypercalls


On 6/29/2021 9:06 AM, Wei Liu wrote:
> On Wed, Jun 02, 2021 at 05:20:51PM +0000, Vineeth Pillai wrote:
>> Hyper-V enables inter-partition communication through the port and
>> connection constructs. More details about ports and connections in
>> TLFS chapter 11.
>>
>> Implement hypercalls related to ports and connections for enabling
>> inter-partiion communication.
>>
>> Signed-off-by: Vineeth Pillai <viremana@...ux.microsoft.com>
> Vineeth, feel free to squash the following patch.
Thanks Wei, I will have this in the next iteration.

~Vineeth
>
> ---8<---
> >From afb9ab422895364216acb4261399f6f5154eea17 Mon Sep 17 00:00:00 2001
> From: Wei Liu <wei.liu@...nel.org>
> Date: Tue, 29 Jun 2021 12:58:47 +0000
> Subject: [PATCH] fixup! mshv: SynIC port and connection hypercalls
>
> Signed-off-by: Wei Liu <wei.liu@...nel.org>
> ---
>   drivers/hv/hv_call.c | 10 +++++-----
>   1 file changed, 5 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/hv/hv_call.c b/drivers/hv/hv_call.c
> index d5cdbe4e93da..30aefcbdda85 100644
> --- a/drivers/hv/hv_call.c
> +++ b/drivers/hv/hv_call.c
> @@ -797,7 +797,7 @@ hv_call_create_port(u64 port_partition_id, union hv_port_id port_id,
>   		if (status != HV_STATUS_INSUFFICIENT_MEMORY) {
>   			pr_err("%s: %s\n",
>   			       __func__, hv_status_to_string(status));
> -			ret = -hv_status_to_errno(status);
> +			ret = hv_status_to_errno(status);
>   			break;
>   		}
>   		ret = hv_call_deposit_pages(NUMA_NO_NODE,
> @@ -826,7 +826,7 @@ hv_call_delete_port(u64 port_partition_id, union hv_port_id port_id)
>   
>   	if (status != HV_STATUS_SUCCESS) {
>   		pr_err("%s: %s\n", __func__, hv_status_to_string(status));
> -		return -hv_status_to_errno(status);
> +		return hv_status_to_errno(status);
>   	}
>   
>   	return 0;
> @@ -866,7 +866,7 @@ hv_call_connect_port(u64 port_partition_id, union hv_port_id port_id,
>   		if (status != HV_STATUS_INSUFFICIENT_MEMORY) {
>   			pr_err("%s: %s\n",
>   			       __func__, hv_status_to_string(status));
> -			ret = -hv_status_to_errno(status);
> +			ret = hv_status_to_errno(status);
>   			break;
>   		}
>   		ret = hv_call_deposit_pages(NUMA_NO_NODE,
> @@ -896,7 +896,7 @@ hv_call_disconnect_port(u64 connection_partition_id,
>   
>   	if (status != HV_STATUS_SUCCESS) {
>   		pr_err("%s: %s\n", __func__, hv_status_to_string(status));
> -		return -hv_status_to_errno(status);
> +		return hv_status_to_errno(status);
>   	}
>   
>   	return 0;
> @@ -918,7 +918,7 @@ hv_call_notify_port_ring_empty(u32 sint_index)
>   
>   	if (status != HV_STATUS_SUCCESS) {
>   		pr_err("%s: %s\n", __func__, hv_status_to_string(status));
> -		return -hv_status_to_errno(status);
> +		return hv_status_to_errno(status);
>   	}
>   
>   	return 0;