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From: Luo Jie <quic_luoj@quicinc.com>
To: Yury Norov <yury.norov@gmail.com>,
	Rasmus Villemoes <linux@rasmusvillemoes.dk>,
	Julia Lawall <Julia.Lawall@inria.fr>,
	"Nicolas Palix" <nicolas.palix@imag.fr>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>, Marc Zyngier <maz@kernel.org>,
	Oliver Upton <oliver.upton@linux.dev>,
	Joey Gouly <joey.gouly@arm.com>,
	Suzuki K Poulose <suzuki.poulose@arm.com>,
	Zenghui Yu <yuzenghui@huawei.com>
Cc: <linux-kernel@vger.kernel.org>, <cocci@inria.fr>,
	<linux-arm-kernel@lists.infradead.org>, <kvmarm@lists.linux.dev>,
	<andrew@lunn.ch>, <quic_kkumarcs@quicinc.com>,
	<quic_linchen@quicinc.com>, <quic_leiwei@quicinc.com>,
	<quic_suruchia@quicinc.com>, <quic_pavir@quicinc.com>,
	Luo Jie <quic_luoj@quicinc.com>
Subject: [PATCH v3 4/6] arm64: nvhe: Convert the opencoded field modify
Date: Thu, 17 Apr 2025 18:47:11 +0800	[thread overview]
Message-ID: <20250417-field_modify-v3-4-6f7992aafcb7@quicinc.com> (raw)
In-Reply-To: <20250417-field_modify-v3-0-6f7992aafcb7@quicinc.com>

Replaced below code with the wrapper FIELD_MODIFY(MASK, &reg, val)
- reg &= ~MASK;
- reg |= FIELD_PREP(MASK, val);
The semantic patch that makes this change is available
in scripts/coccinelle/misc/field_modify.cocci.

More information about semantic patching is available at
https://coccinelle.gitlabpages.inria.fr/website

Signed-off-by: Luo Jie <quic_luoj@quicinc.com>
---
 arch/arm64/kvm/hyp/include/nvhe/memory.h | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/arch/arm64/kvm/hyp/include/nvhe/memory.h b/arch/arm64/kvm/hyp/include/nvhe/memory.h
index 34233d586060..b2af748964d0 100644
--- a/arch/arm64/kvm/hyp/include/nvhe/memory.h
+++ b/arch/arm64/kvm/hyp/include/nvhe/memory.h
@@ -30,8 +30,7 @@ enum pkvm_page_state {
 static inline enum kvm_pgtable_prot pkvm_mkstate(enum kvm_pgtable_prot prot,
 						 enum pkvm_page_state state)
 {
-	prot &= ~PKVM_PAGE_STATE_PROT_MASK;
-	prot |= FIELD_PREP(PKVM_PAGE_STATE_PROT_MASK, state);
+	FIELD_MODIFY(PKVM_PAGE_STATE_PROT_MASK, &prot, state);
 	return prot;
 }
 

-- 
2.34.1


  parent reply	other threads:[~2025-04-17 10:48 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-04-17 10:47 [PATCH v3 0/6] Add FIELD_MODIFY() helper Luo Jie
2025-04-17 10:47 ` [PATCH v3 1/6] bitfield: " Luo Jie
2025-04-18 17:11   ` Yury Norov
2025-04-23 13:05     ` Jie Luo
2025-04-17 10:47 ` [PATCH v3 2/6] coccinelle: misc: Add field_modify script Luo Jie
2025-04-23 11:01   ` [cocci] " Markus Elfring
2025-04-23 13:04     ` Jie Luo
2025-04-23 16:35       ` Markus Elfring
2025-05-19 13:44         ` Luo Jie
2025-05-19 15:39           ` Julia Lawall
2025-04-17 10:47 ` [PATCH v3 3/6] arm64: tlb: Convert the opencoded field modify Luo Jie
2025-04-17 18:11   ` Russell King (Oracle)
2025-04-23 13:15     ` Jie Luo
2025-04-24 15:24       ` [cocci] " Keller, Jacob E
2025-04-23 16:54     ` Keller, Jacob E
2025-04-17 10:47 ` Luo Jie [this message]
2025-04-17 11:23   ` [PATCH v3 4/6] arm64: nvhe: " Marc Zyngier
2025-04-18 15:14     ` Yury Norov
2025-04-18 15:34       ` Marc Zyngier
2025-04-23 17:48       ` Russell King (Oracle)
2025-04-23 18:27         ` Yury Norov
2025-04-23 19:11           ` Russell King (Oracle)
2025-04-23 19:40             ` Yury Norov
2025-04-17 10:47 ` [PATCH v3 5/6] arm64: kvm: " Luo Jie
2025-04-17 10:47 ` [PATCH v3 6/6] arm64: mm: " Luo Jie
2025-04-17 11:10 ` [PATCH v3 0/6] Add FIELD_MODIFY() helper Marc Zyngier
2025-04-17 17:22   ` Andrew Lunn
2025-04-17 17:45     ` Marc Zyngier
2025-04-18 15:08       ` Yury Norov
2025-04-18 15:35         ` Marc Zyngier
2025-04-18 17:04           ` Yury Norov
2025-04-23 13:19             ` Jie Luo
2025-04-23 17:44         ` Russell King (Oracle)
2025-04-23 18:44           ` Yury Norov

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