From: Arvind Sankar <nivedita@alum.mit.edu>
To: x86@kernel.org, Dave Hansen <dave.hansen@linux.intel.com>,
Andy Lutomirski <luto@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
linux-sh@vger.kernel.org,
Yoshinori Sato <ysato@users.sourceforge.jp>,
Rich Felker <dalias@libc.org>,
sparclinux@vger.kernel.org,
"David S. Miller" <davem@davemloft.net>
Cc: Andrew Morton <akpm@linux-foundation.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: [PATCH 1/3] x86/mm: Drop unused MAX_PHYSADDR_BITS
Date: Thu, 23 Jul 2020 23:15:42 +0000 [thread overview]
Message-ID: <20200723231544.17274-2-nivedita@alum.mit.edu> (raw)
In-Reply-To: <20200723231544.17274-1-nivedita@alum.mit.edu>
The macro is not used anywhere, and has an incorrect value (going by the
comment) on x86_64 since commit
c898faf91b3e ("x86: 46 bit physical address support on 64 bits")
To avoid confusion, just remove the definition.
Signed-off-by: Arvind Sankar <nivedita@alum.mit.edu>
---
arch/x86/include/asm/sparsemem.h | 6 +-----
1 file changed, 1 insertion(+), 5 deletions(-)
diff --git a/arch/x86/include/asm/sparsemem.h b/arch/x86/include/asm/sparsemem.h
index 199218719a86..6bfc878f6771 100644
--- a/arch/x86/include/asm/sparsemem.h
+++ b/arch/x86/include/asm/sparsemem.h
@@ -10,24 +10,20 @@
* field of the struct page
*
* SECTION_SIZE_BITS 2^n: size of each section
- * MAX_PHYSADDR_BITS 2^n: max size of physical address space
- * MAX_PHYSMEM_BITS 2^n: how much memory we can have in that space
+ * MAX_PHYSMEM_BITS 2^n: max size of physical address space
*
*/
#ifdef CONFIG_X86_32
# ifdef CONFIG_X86_PAE
# define SECTION_SIZE_BITS 29
-# define MAX_PHYSADDR_BITS 36
# define MAX_PHYSMEM_BITS 36
# else
# define SECTION_SIZE_BITS 26
-# define MAX_PHYSADDR_BITS 32
# define MAX_PHYSMEM_BITS 32
# endif
#else /* CONFIG_X86_32 */
# define SECTION_SIZE_BITS 27 /* matt - 128 is convenient right now */
-# define MAX_PHYSADDR_BITS (pgtable_l5_enabled() ? 52 : 44)
# define MAX_PHYSMEM_BITS (pgtable_l5_enabled() ? 52 : 46)
#endif
--
2.26.2
next prev parent reply other threads:[~2020-07-23 23:15 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-23 23:15 [PATCH 0/3] Drop unused MAX_PHYSADDR_BITS Arvind Sankar
2020-07-23 23:15 ` Arvind Sankar [this message]
2020-07-24 8:22 ` [PATCH 1/3] x86/mm: " David Hildenbrand
2020-07-23 23:15 ` [PATCH 2/3] sh/mm: " Arvind Sankar
2020-07-24 8:22 ` David Hildenbrand
2020-07-23 23:15 ` [PATCH 3/3] sparc: " Arvind Sankar
2020-07-24 8:22 ` David Hildenbrand
2020-07-24 23:37 ` David Miller
2020-07-24 15:04 ` [PATCH 0/3] " Dave Hansen
2020-07-26 6:48 ` Mike Rapoport
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