linux-kernel - [tip: x86/mm] x86/mm: Remove unused CR3_HW_ASID

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Message-ID: <172328015800.2215.10373959561107309075.tip-bot2@tip-bot2>
Date: Sat, 10 Aug 2024 08:55:58 -0000
From: "tip-bot2 for Yosry Ahmed" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Yosry Ahmed <yosryahmed@...gle.com>, Thomas Gleixner <tglx@...utronix.de>,
 x86@...nel.org, linux-kernel@...r.kernel.org
Subject: [tip: x86/mm] x86/mm: Remove unused CR3_HW_ASID_BITS

The following commit has been merged into the x86/mm branch of tip:

Commit-ID:     4276a0bb62598966716e1ee1ac4a64d382cc9ef7
Gitweb:        https://git.kernel.org/tip/4276a0bb62598966716e1ee1ac4a64d382cc9ef7
Author:        Yosry Ahmed <yosryahmed@...gle.com>
AuthorDate:    Thu, 25 Apr 2024 21:59:51 
Committer:     Thomas Gleixner <tglx@...utronix.de>
CommitterDate: Sat, 10 Aug 2024 10:47:19 +02:00

x86/mm: Remove unused CR3_HW_ASID_BITS

Commit 6fd166aae78c ("x86/mm: Use/Fix PCID to optimize user/kernel
switches") removed the last usage of CR3_HW_ASID_BITS and opted to use
X86_CR3_PCID_BITS instead. Remove CR3_HW_ASID_BITS.

Signed-off-by: Yosry Ahmed <yosryahmed@...gle.com>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Link: https://lore.kernel.org/all/20240425215951.2310105-1-yosryahmed@google.com

---
 arch/x86/mm/tlb.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c
index 1fe9ba3..09950fe 100644
--- a/arch/x86/mm/tlb.c
+++ b/arch/x86/mm/tlb.c
@@ -86,9 +86,6 @@
  *
  */
 
-/* There are 12 bits of space for ASIDS in CR3 */
-#define CR3_HW_ASID_BITS		12
-
 /*
  * When enabled, MITIGATION_PAGE_TABLE_ISOLATION consumes a single bit for
  * user/kernel switches