linux-kernel - [tip: x86/hyperv] x86/hyper-v: Add "polling" bit to hv_synic

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Date:   Fri, 17 Jan 2020 13:43:24 -0000
From:   "tip-bot2 for Wei Liu" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Wei Liu <wei.liu@...nel.org>, Thomas Gleixner <tglx@...utronix.de>,
        Michael Kelley <mikelley@...rosoft.com>, x86 <x86@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: [tip: x86/hyperv] x86/hyper-v: Add "polling" bit to hv_synic_sint

The following commit has been merged into the x86/hyperv branch of tip:

Commit-ID:     538f127cd3bcf76071139f4bfe9cc3b2a46f3b3d
Gitweb:        https://git.kernel.org/tip/538f127cd3bcf76071139f4bfe9cc3b2a46f3b3d
Author:        Wei Liu <wei.liu@...nel.org>
AuthorDate:    Sun, 22 Dec 2019 23:34:04 
Committer:     Thomas Gleixner <tglx@...utronix.de>
CommitterDate: Fri, 17 Jan 2020 14:38:21 +01:00

x86/hyper-v: Add "polling" bit to hv_synic_sint

That bit is documented in TLFS 5.0c as follows:

  Setting the polling bit will have the effect of unmasking an
  interrupt source, except that an actual interrupt is not generated.

Signed-off-by: Wei Liu <wei.liu@...nel.org>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Reviewed-by: Michael Kelley <mikelley@...rosoft.com>
Link: https://lore.kernel.org/r/20191222233404.1629-1-wei.liu@kernel.org

---
 arch/x86/include/asm/hyperv-tlfs.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/x86/include/asm/hyperv-tlfs.h b/arch/x86/include/asm/hyperv-tlfs.h
index 5f10f7f..92abc1e 100644
--- a/arch/x86/include/asm/hyperv-tlfs.h
+++ b/arch/x86/include/asm/hyperv-tlfs.h
@@ -809,7 +809,8 @@ union hv_synic_sint {
 		u64 reserved1:8;
 		u64 masked:1;
 		u64 auto_eoi:1;
-		u64 reserved2:46;
+		u64 polling:1;
+		u64 reserved2:45;
 	} __packed;
 };