From: Yosry Ahmed <yosryahmed@google.com>
To: x86@kernel.org, Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
"H. Peter Anvin" <hpa@zytor.com>,
Andy Lutomirski <luto@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
Rick Edgecombe <rick.p.edgecombe@intel.com>,
Andrew Morton <akpm@linux-foundation.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Yosry Ahmed <yosryahmed@google.com>
Subject: [PATCH] x86/mm: remove unused CR3_HW_ASID_BITS
Date: Thu, 25 Apr 2024 21:59:51 +0000 [thread overview]
Message-ID: <20240425215951.2310105-1-yosryahmed@google.com> (raw)
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@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 44ac64f3a047c..a2ba5bb201705 100644
--- a/arch/x86/mm/tlb.c
+++ b/arch/x86/mm/tlb.c
@@ -85,9 +85,6 @@
*
*/
-/* 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
--
2.44.0.769.g3c40516874-goog
next reply other threads:[~2024-04-25 21:59 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-25 21:59 Yosry Ahmed [this message]
2024-08-10 1:10 ` Yosry Ahmed
2024-08-12 6:39 ` Kirill A. Shutemov
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