linux-kernel - [PATCH] iommu/io-pgtable-arm: Remove unused macro iopte

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Message-ID: <20250708211705.1567787-1-danielmentz@google.com>
Date: Tue,  8 Jul 2025 21:17:05 +0000
From: Daniel Mentz <danielmentz@...gle.com>
To: iommu@...ts.linux.dev, linux-kernel@...r.kernel.org
Cc: Will Deacon <will@...nel.org>, Jason Gunthorpe <jgg@...pe.ca>, Liviu Dudau <liviu.dudau@....com>, 
	Daniel Mentz <danielmentz@...gle.com>
Subject: [PATCH] iommu/io-pgtable-arm: Remove unused macro iopte_prot

Commit 33729a5fc0ca ("iommu/io-pgtable-arm: Remove split on unmap
behavior") removed the last user of the macro iopte_prot. Remove the
macro definition of iopte_prot as well as three other related
definitions.

Fixes: 33729a5fc0ca ("iommu/io-pgtable-arm: Remove split on unmap behavior")
Signed-off-by: Daniel Mentz <danielmentz@...gle.com>
---
 drivers/iommu/io-pgtable-arm.c | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/drivers/iommu/io-pgtable-arm.c b/drivers/iommu/io-pgtable-arm.c
index 96425e92f313..7e8e2216c294 100644
--- a/drivers/iommu/io-pgtable-arm.c
+++ b/drivers/iommu/io-pgtable-arm.c
@@ -85,11 +85,6 @@
 #define ARM_LPAE_PTE_NS			(((arm_lpae_iopte)1) << 5)
 #define ARM_LPAE_PTE_VALID		(((arm_lpae_iopte)1) << 0)
 
-#define ARM_LPAE_PTE_ATTR_LO_MASK	(((arm_lpae_iopte)0x3ff) << 2)
-/* Ignore the contiguous bit for block splitting */
-#define ARM_LPAE_PTE_ATTR_HI_MASK	(ARM_LPAE_PTE_XN | ARM_LPAE_PTE_DBM)
-#define ARM_LPAE_PTE_ATTR_MASK		(ARM_LPAE_PTE_ATTR_LO_MASK |	\
-					 ARM_LPAE_PTE_ATTR_HI_MASK)
 /* Software bit for solving coherency races */
 #define ARM_LPAE_PTE_SW_SYNC		(((arm_lpae_iopte)1) << 55)
 
@@ -155,8 +150,6 @@
 #define iopte_type(pte)					\
 	(((pte) >> ARM_LPAE_PTE_TYPE_SHIFT) & ARM_LPAE_PTE_TYPE_MASK)
 
-#define iopte_prot(pte)	((pte) & ARM_LPAE_PTE_ATTR_MASK)
-
 #define iopte_writeable_dirty(pte)				\
 	(((pte) & ARM_LPAE_PTE_AP_WR_CLEAN_MASK) == ARM_LPAE_PTE_DBM)
 
-- 
2.50.0.727.gbf7dc18ff4-goog