linux-kernel - [PATCH] arm64/mm: Drop TCR_SMP

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Message-Id: <20240724041428.573748-1-anshuman.khandual@arm.com>
Date: Wed, 24 Jul 2024 09:44:28 +0530
From: Anshuman Khandual <anshuman.khandual@....com>
To: linux-arm-kernel@...ts.infradead.org
Cc: Anshuman Khandual <anshuman.khandual@....com>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will@...nel.org>,
	Ryan Roberts <ryan.roberts@....com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH] arm64/mm: Drop TCR_SMP_FLAGS

Earlier TCR_SMP_FLAGS gets conditionally set as TCR_SHARED with CONFIG_SMP.
Currently CONFIG_SMP is always enabled on arm64 platforms, hence drop this
indirection via TCR_SMP_FLAGS and instead always directly use TCR_SHARED.

Cc: Catalin Marinas <catalin.marinas@....com>
Cc: Will Deacon <will@...nel.org>
Cc: Ryan Roberts <ryan.roberts@....com>
Cc: linux-arm-kernel@...ts.infradead.org
Cc: linux-kernel@...r.kernel.org
Signed-off-by: Anshuman Khandual <anshuman.khandual@....com>
---
 arch/arm64/mm/proc.S | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/arch/arm64/mm/proc.S b/arch/arm64/mm/proc.S
index f4bc6c5bac06..8abdc7fed321 100644
--- a/arch/arm64/mm/proc.S
+++ b/arch/arm64/mm/proc.S
@@ -36,8 +36,6 @@
 #define TCR_KASLR_FLAGS	0
 #endif
 
-#define TCR_SMP_FLAGS	TCR_SHARED
-
 /* PTWs cacheable, inner/outer WBWA */
 #define TCR_CACHE_FLAGS	TCR_IRGN_WBWA | TCR_ORGN_WBWA
 
@@ -469,7 +467,7 @@ SYM_FUNC_START(__cpu_setup)
 	tcr	.req	x16
 	mov_q	mair, MAIR_EL1_SET
 	mov_q	tcr, TCR_T0SZ(IDMAP_VA_BITS) | TCR_T1SZ(VA_BITS_MIN) | TCR_CACHE_FLAGS | \
-		     TCR_SMP_FLAGS | TCR_TG_FLAGS | TCR_KASLR_FLAGS | TCR_ASID16 | \
+		     TCR_SHARED | TCR_TG_FLAGS | TCR_KASLR_FLAGS | TCR_ASID16 | \
 		     TCR_TBI0 | TCR_A1 | TCR_KASAN_SW_FLAGS | TCR_MTE_FLAGS
 
 	tcr_clear_errata_bits tcr, x9, x5
-- 
2.30.2