From: Wei Liu <wei.liu@kernel.org>
Date: Sun, 22 Dec 2019 23:34:04 +0000 (+0000)
Subject: x86/hyper-v: Add "polling" bit to hv_synic_sint
X-Git-Tag: v5.6-rc1~105^2^2
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=538f127cd3bcf76071139f4bfe9cc3b2a46f3b3d;p=thirdparty%2Flinux.git

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

diff --git a/arch/x86/include/asm/hyperv-tlfs.h b/arch/x86/include/asm/hyperv-tlfs.h
index 5f10f7f2098db..92abc1e42bfc1 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;
 };