linux-kernel - [PATCH 7/9] iommu/amd: Remove iommu_alloc_4k

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Date: Tue, 30 Apr 2024 15:24:28 +0000
From: Suravee Suthikulpanit <suravee.suthikulpanit@....com>
To: <linux-kernel@...r.kernel.org>, <iommu@...ts.linux.dev>, <joro@...tes.org>
CC: <thomas.lendacky@....com>, <vasant.hegde@....com>, <michael.roth@....com>,
	<jon.grimm@....com>, <rientjes@...gle.com>, Suravee Suthikulpanit
	<suravee.suthikulpanit@....com>
Subject: [PATCH 7/9] iommu/amd: Remove iommu_alloc_4k_pages() helper function

Since it is replaced with the amd_iommu_get_zeroed_mem().

Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@....com>
---
 drivers/iommu/amd/amd_iommu.h |  2 --
 drivers/iommu/amd/init.c      | 16 ----------------
 2 files changed, 18 deletions(-)

diff --git a/drivers/iommu/amd/amd_iommu.h b/drivers/iommu/amd/amd_iommu.h
index ccd9003813ac..1ca7e1e389c4 100644
--- a/drivers/iommu/amd/amd_iommu.h
+++ b/drivers/iommu/amd/amd_iommu.h
@@ -25,8 +25,6 @@ void amd_iommu_restart_ga_log(struct amd_iommu *iommu);
 void amd_iommu_restart_ppr_log(struct amd_iommu *iommu);
 void amd_iommu_set_rlookup_table(struct amd_iommu *iommu, u16 devid);
 void iommu_feature_enable(struct amd_iommu *iommu, u8 bit);
-void *__init iommu_alloc_4k_pages(struct amd_iommu *iommu,
-				  gfp_t gfp, size_t size);
 
 void *amd_iommu_get_zeroed_mem(gfp_t gfp_mask, struct amd_iommu_mem *mem);
 void *amd_iommu_get_zeroed_mem_node(int nid, gfp_t gfp_mask,
diff --git a/drivers/iommu/amd/init.c b/drivers/iommu/amd/init.c
index b62d4c806155..1b74a31b4337 100644
--- a/drivers/iommu/amd/init.c
+++ b/drivers/iommu/amd/init.c
@@ -841,22 +841,6 @@ static void __init free_command_buffer(struct amd_iommu *iommu)
 	amd_iommu_free_mem(&iommu->cmd_buf_mem);
 }
 
-void *__init iommu_alloc_4k_pages(struct amd_iommu *iommu, gfp_t gfp,
-				  size_t size)
-{
-	int order = get_order(size);
-	void *buf = iommu_alloc_pages(gfp, order);
-
-	if (buf &&
-	    check_feature(FEATURE_SNP) &&
-	    set_memory_4k((unsigned long)buf, (1 << order))) {
-		iommu_free_pages(buf, order);
-		buf = NULL;
-	}
-
-	return buf;
-}
-
 /* allocates the memory where the IOMMU will log its events to */
 static int __init alloc_event_buffer(struct amd_iommu *iommu)
 {
-- 
2.34.1