From: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
To: Linus Torvalds <torvalds@linux-foundation.org>,
Andrew Morton <akpm@linux-foundation.org>,
x86@kernel.org, Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>
Cc: Andi Kleen <ak@linux.intel.com>,
Dave Hansen <dave.hansen@intel.com>,
Andy Lutomirski <luto@amacapital.net>,
Michal Hocko <mhocko@kernel.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
Minchan Kim <minchan@kernel.org>, Nitin Gupta <ngupta@vflare.org>,
Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Subject: [PATCHv4 02/14] mm/zsmalloc: Prepare to variable MAX_PHYSMEM_BITS
Date: Tue, 8 Aug 2017 15:54:03 +0300 [thread overview]
Message-ID: <20170808125415.78842-3-kirill.shutemov@linux.intel.com> (raw)
In-Reply-To: <20170808125415.78842-1-kirill.shutemov@linux.intel.com>
With boot-time switching between paging mode we will have variable
MAX_PHYSMEM_BITS.
Let's use the maximum varible possible for CONFIG_X86_5LEVEL=y
configuration to define zsmalloc data structures.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Nitin Gupta <ngupta@vflare.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
---
mm/zsmalloc.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index 013eea76685e..468879915d3d 100644
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -93,7 +93,13 @@
#define MAX_PHYSMEM_BITS BITS_PER_LONG
#endif
#endif
+
+#ifdef CONFIG_X86_5LEVEL
+/* MAX_PHYSMEM_BITS is variable, use maximum value here */
+#define _PFN_BITS (52 - PAGE_SHIFT)
+#else
#define _PFN_BITS (MAX_PHYSMEM_BITS - PAGE_SHIFT)
+#endif
/*
* Memory for allocating for handle keeps object position by
--
2.13.2
--
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next prev parent reply other threads:[~2017-08-08 12:54 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-08 12:54 [PATCHv4 00/14] Boot-time switching between 4- and 5-level paging Kirill A. Shutemov
2017-08-08 12:54 ` [PATCHv4 01/14] mm/sparsemem: Allocate mem_section at runtime for SPARSEMEM_EXTREME Kirill A. Shutemov
2017-08-14 14:29 ` Kirill A. Shutemov
2017-08-08 12:54 ` Kirill A. Shutemov [this message]
2017-08-08 12:54 ` [PATCHv4 03/14] x86/kasan: Use the same shadow offset for 4- and 5-level paging Kirill A. Shutemov
2017-08-08 12:54 ` [PATCHv4 04/14] x86/xen: Provide pre-built page tables only for XEN_PV and XEN_PVH Kirill A. Shutemov
2017-08-08 12:54 ` [PATCHv4 05/14] x86/xen: Drop 5-level paging support code from XEN_PV code Kirill A. Shutemov
2017-08-09 11:54 ` Juergen Gross
2017-08-08 12:54 ` [PATCHv4 06/14] x86/boot/compressed/64: Detect and handle 5-level paging at boot-time Kirill A. Shutemov
2017-08-08 12:54 ` [PATCHv4 07/14] x86/mm: Make virtual memory layout movable for CONFIG_X86_5LEVEL Kirill A. Shutemov
2017-08-08 12:54 ` [PATCHv4 08/14] x86/mm: Make PGDIR_SHIFT and PTRS_PER_P4D variable Kirill A. Shutemov
2017-08-17 9:00 ` Ingo Molnar
2017-08-17 10:54 ` Kirill A. Shutemov
2017-08-17 11:10 ` Ingo Molnar
2017-08-21 15:23 ` Kirill A. Shutemov
2017-08-08 12:54 ` [PATCHv4 09/14] x86/mm: Handle boot-time paging mode switching at early boot Kirill A. Shutemov
2017-08-17 9:05 ` Ingo Molnar
2017-08-17 9:10 ` Ingo Molnar
2017-08-08 12:54 ` [PATCHv4 10/14] x86/mm: Fold p4d page table layer at runtime Kirill A. Shutemov
2017-08-08 12:54 ` [PATCHv4 11/14] x86/mm: Replace compile-time checks for 5-level with runtime-time Kirill A. Shutemov
2017-08-17 9:17 ` Ingo Molnar
2017-08-08 12:54 ` [PATCHv4 12/14] x86/mm: Allow to boot without la57 if CONFIG_X86_5LEVEL=y Kirill A. Shutemov
2017-08-08 12:54 ` [PATCHv4 13/14] x86/xen: Allow XEN_PV and XEN_PVH to be enabled with X86_5LEVEL Kirill A. Shutemov
2017-08-09 11:50 ` Juergen Gross
2017-08-08 12:54 ` [PATCHv4 14/14] x86/mm: Offset boot-time paging mode switching cost Kirill A. Shutemov
2017-08-17 9:21 ` Ingo Molnar
2017-08-14 14:30 ` [PATCHv4 00/14] Boot-time switching between 4- and 5-level paging Kirill A. Shutemov
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