linux-kernel - [PATCH 03/15] x86/irq: Use bitfields exclusively in posted interrupt descriptor

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Date: Fri, 26 Jan 2024 15:42:25 -0800
From: Jacob Pan <jacob.jun.pan@...ux.intel.com>
To: LKML <linux-kernel@...r.kernel.org>,
	X86 Kernel <x86@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	iommu@...ts.linux.dev,
	Thomas Gleixner <tglx@...utronix.de>,
	"Lu Baolu" <baolu.lu@...ux.intel.com>,
	kvm@...r.kernel.org,
	Dave Hansen <dave.hansen@...el.com>,
	Joerg Roedel <joro@...tes.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	"Borislav Petkov" <bp@...en8.de>,
	"Ingo Molnar" <mingo@...hat.com>
Cc: Paul Luse <paul.e.luse@...el.com>,
	Dan Williams <dan.j.williams@...el.com>,
	Jens Axboe <axboe@...nel.dk>,
	Raj Ashok <ashok.raj@...el.com>,
	"Tian, Kevin" <kevin.tian@...el.com>,
	maz@...nel.org,
	seanjc@...gle.com,
	"Robin Murphy" <robin.murphy@....com>,
	Jacob Pan <jacob.jun.pan@...ux.intel.com>
Subject: [PATCH 03/15] x86/irq: Use bitfields exclusively in posted interrupt descriptor

From: Thomas Gleixner <tglx@...utronix.de>

Mixture of bitfields and types is weird and really not intuitive, remove
types and use bitfields exclusively.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Signed-off-by: Jacob Pan <jacob.jun.pan@...ux.intel.com>
---
 arch/x86/include/asm/posted_intr.h | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/arch/x86/include/asm/posted_intr.h b/arch/x86/include/asm/posted_intr.h
index acf237b2882e..896b3462f3dd 100644
--- a/arch/x86/include/asm/posted_intr.h
+++ b/arch/x86/include/asm/posted_intr.h
@@ -16,17 +16,17 @@ struct pi_desc {
 	union {
 		struct {
 				/* bit 256 - Outstanding Notification */
-			u16	on	: 1,
+			u64	on	:  1,
 				/* bit 257 - Suppress Notification */
-				sn	: 1,
+				sn	:  1,
 				/* bit 271:258 - Reserved */
-				rsvd_1	: 14;
+					: 14,
 				/* bit 279:272 - Notification Vector */
-			u8	nv;
+				nv	:  8,
 				/* bit 287:280 - Reserved */
-			u8	rsvd_2;
+					:  8,
 				/* bit 319:288 - Notification Destination */
-			u32	ndst;
+				ndst	: 32;
 		};
 		u64 control;
 	};
-- 
2.25.1