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

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Date:   Tue, 29 Jun 2021 13:06:52 +0000
From:   Wei Liu <wei.liu@...nel.org>
To:     Vineeth Pillai <viremana@...ux.microsoft.com>
Cc:     Nuno Das Neves <nunodasneves@...ux.microsoft.com>,
        Wei Liu <wei.liu@...nel.org>,
        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 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.

---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;
-- 
2.30.2