From: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
To: Ingo Molnar <mingo@redhat.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
x86@kernel.org, Thomas Gleixner <tglx@linutronix.de>,
"H. Peter Anvin" <hpa@zytor.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Andy Lutomirski <luto@amacapital.net>,
Cyrill Gorcunov <gorcunov@openvz.org>,
Borislav Petkov <bp@suse.de>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Subject: [PATCHv7 11/19] x86/mm: Make STACK_TOP_MAX dynamic
Date: Mon, 18 Sep 2017 13:55:45 +0300 [thread overview]
Message-ID: <20170918105553.27914-12-kirill.shutemov@linux.intel.com> (raw)
In-Reply-To: <20170918105553.27914-1-kirill.shutemov@linux.intel.com>
For boot-time switching between paging modes, we need to be able to
change STACK_TOP_MAX at runtime.
The change is trivial and it doesn't affect kernel image size.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
---
arch/x86/include/asm/processor.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h
index 3fa26a61eabc..fa9300ccce1b 100644
--- a/arch/x86/include/asm/processor.h
+++ b/arch/x86/include/asm/processor.h
@@ -871,7 +871,7 @@ static inline void spin_lock_prefetch(const void *x)
IA32_PAGE_OFFSET : TASK_SIZE_MAX)
#define STACK_TOP TASK_SIZE_LOW
-#define STACK_TOP_MAX TASK_SIZE_MAX
+#define STACK_TOP_MAX (pgtable_l5_enabled ? TASK_SIZE_MAX : DEFAULT_MAP_WINDOW)
#define INIT_THREAD { \
.sp0 = TOP_OF_INIT_STACK, \
--
2.14.1
WARNING: multiple messages have this Message-ID (diff)
From: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
To: Ingo Molnar <mingo@redhat.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
x86@kernel.org, Thomas Gleixner <tglx@linutronix.de>,
"H. Peter Anvin" <hpa@zytor.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Andy Lutomirski <luto@amacapital.net>,
Cyrill Gorcunov <gorcunov@openvz.org>,
Borislav Petkov <bp@suse.de>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Subject: [PATCHv7 11/19] x86/mm: Make STACK_TOP_MAX dynamic
Date: Mon, 18 Sep 2017 13:55:45 +0300 [thread overview]
Message-ID: <20170918105553.27914-12-kirill.shutemov@linux.intel.com> (raw)
In-Reply-To: <20170918105553.27914-1-kirill.shutemov@linux.intel.com>
For boot-time switching between paging modes, we need to be able to
change STACK_TOP_MAX at runtime.
The change is trivial and it doesn't affect kernel image size.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
---
arch/x86/include/asm/processor.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h
index 3fa26a61eabc..fa9300ccce1b 100644
--- a/arch/x86/include/asm/processor.h
+++ b/arch/x86/include/asm/processor.h
@@ -871,7 +871,7 @@ static inline void spin_lock_prefetch(const void *x)
IA32_PAGE_OFFSET : TASK_SIZE_MAX)
#define STACK_TOP TASK_SIZE_LOW
-#define STACK_TOP_MAX TASK_SIZE_MAX
+#define STACK_TOP_MAX (pgtable_l5_enabled ? TASK_SIZE_MAX : DEFAULT_MAP_WINDOW)
#define INIT_THREAD { \
.sp0 = TOP_OF_INIT_STACK, \
--
2.14.1
--
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next prev parent reply other threads:[~2017-09-18 10:59 UTC|newest]
Thread overview: 94+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-18 10:55 [PATCHv7 00/19] Boot-time switching between 4- and 5-level paging for 4.15 Kirill A. Shutemov
2017-09-18 10:55 ` Kirill A. Shutemov
2017-09-18 10:55 ` [PATCHv7 01/19] mm/sparsemem: Allocate mem_section at runtime for SPARSEMEM_EXTREME Kirill A. Shutemov
2017-09-18 10:55 ` Kirill A. Shutemov
2017-09-28 8:07 ` Ingo Molnar
2017-09-28 8:07 ` Ingo Molnar
2017-09-28 9:08 ` Kirill A. Shutemov
2017-09-28 9:08 ` Kirill A. Shutemov
2017-09-28 9:39 ` Ingo Molnar
2017-09-28 9:39 ` Ingo Molnar
2017-09-18 10:55 ` [PATCHv7 02/19] mm/zsmalloc: Prepare to variable MAX_PHYSMEM_BITS Kirill A. Shutemov
2017-09-18 10:55 ` Kirill A. Shutemov
2017-09-28 8:10 ` Ingo Molnar
2017-09-28 8:10 ` Ingo Molnar
2017-09-28 9:19 ` Kirill A. Shutemov
2017-09-28 9:19 ` Kirill A. Shutemov
2017-09-28 9:44 ` Ingo Molnar
2017-09-28 9:44 ` Ingo Molnar
2017-09-18 10:55 ` [PATCHv7 03/19] x86/kasan: Use the same shadow offset for 4- and 5-level paging Kirill A. Shutemov
2017-09-18 10:55 ` Kirill A. Shutemov
2017-09-28 8:15 ` Ingo Molnar
2017-09-28 8:15 ` Ingo Molnar
2017-09-18 10:55 ` [PATCHv7 04/19] x86/xen: Provide pre-built page tables only for XEN_PV and XEN_PVH Kirill A. Shutemov
2017-09-18 10:55 ` Kirill A. Shutemov
2017-09-18 10:55 ` [PATCHv7 05/19] x86/xen: Drop 5-level paging support code from XEN_PV code Kirill A. Shutemov
2017-09-18 10:55 ` Kirill A. Shutemov
2017-09-18 10:55 ` [PATCHv7 06/19] x86/boot/compressed/64: Detect and handle 5-level paging at boot-time Kirill A. Shutemov
2017-09-18 10:55 ` Kirill A. Shutemov
2017-09-28 8:18 ` Ingo Molnar
2017-09-28 8:18 ` Ingo Molnar
2017-09-18 10:55 ` [PATCHv7 07/19] x86/mm: Make virtual memory layout movable for CONFIG_X86_5LEVEL Kirill A. Shutemov
2017-09-18 10:55 ` Kirill A. Shutemov
2017-09-28 8:19 ` Ingo Molnar
2017-09-28 8:19 ` Ingo Molnar
2017-09-18 10:55 ` [PATCHv7 08/19] x86/mm: Make PGDIR_SHIFT and PTRS_PER_P4D variable Kirill A. Shutemov
2017-09-18 10:55 ` Kirill A. Shutemov
2017-09-19 14:03 ` Kirill A. Shutemov
2017-09-19 14:03 ` Kirill A. Shutemov
2017-09-28 8:21 ` Ingo Molnar
2017-09-28 8:21 ` Ingo Molnar
2017-09-18 10:55 ` [PATCHv7 09/19] x86/mm: Make MAX_PHYSADDR_BITS and MAX_PHYSMEM_BITS dynamic Kirill A. Shutemov
2017-09-18 10:55 ` Kirill A. Shutemov
2017-09-28 8:25 ` Ingo Molnar
2017-09-28 8:25 ` Ingo Molnar
2017-09-28 10:17 ` Kirill A. Shutemov
2017-09-28 10:17 ` Kirill A. Shutemov
2017-09-28 10:40 ` Ingo Molnar
2017-09-28 10:40 ` Ingo Molnar
2017-09-18 10:55 ` [PATCHv7 10/19] x86/mm: Make __PHYSICAL_MASK_SHIFT and __VIRTUAL_MASK_SHIFT dynamic Kirill A. Shutemov
2017-09-18 10:55 ` Kirill A. Shutemov
2017-09-28 8:28 ` Ingo Molnar
2017-09-28 8:28 ` Ingo Molnar
2017-09-28 10:22 ` Kirill A. Shutemov
2017-09-28 10:22 ` Kirill A. Shutemov
2017-09-28 10:42 ` Ingo Molnar
2017-09-28 10:42 ` Ingo Molnar
2017-09-18 10:55 ` Kirill A. Shutemov [this message]
2017-09-18 10:55 ` [PATCHv7 11/19] x86/mm: Make STACK_TOP_MAX dynamic Kirill A. Shutemov
2017-09-28 8:29 ` Ingo Molnar
2017-09-28 8:29 ` Ingo Molnar
2017-09-28 13:19 ` Kirill A. Shutemov
2017-09-28 13:19 ` Kirill A. Shutemov
2017-09-18 10:55 ` [PATCHv7 12/19] x86/mm: Adjust virtual address space layout in early boot Kirill A. Shutemov
2017-09-18 10:55 ` Kirill A. Shutemov
2017-09-28 8:31 ` Ingo Molnar
2017-09-28 8:31 ` Ingo Molnar
2017-09-28 13:26 ` Kirill A. Shutemov
2017-09-28 13:26 ` Kirill A. Shutemov
2017-09-28 13:38 ` Ingo Molnar
2017-09-28 13:38 ` Ingo Molnar
2017-09-28 14:28 ` Kirill A. Shutemov
2017-09-28 14:28 ` Kirill A. Shutemov
2017-09-18 10:55 ` [PATCHv7 13/19] x86/mm: Make early boot code support boot-time switching of paging modes Kirill A. Shutemov
2017-09-18 10:55 ` Kirill A. Shutemov
2017-09-28 8:33 ` Ingo Molnar
2017-09-28 8:33 ` Ingo Molnar
2017-09-18 10:55 ` [PATCHv7 14/19] x86/mm: Fold p4d page table layer at runtime Kirill A. Shutemov
2017-09-18 10:55 ` Kirill A. Shutemov
2017-09-18 10:55 ` [PATCHv7 15/19] x86/mm: Replace compile-time checks for 5-level with runtime-time Kirill A. Shutemov
2017-09-18 10:55 ` Kirill A. Shutemov
2017-09-28 8:35 ` Ingo Molnar
2017-09-28 8:35 ` Ingo Molnar
2017-09-18 10:55 ` [PATCHv7 16/19] x86/mm: Allow to boot without la57 if CONFIG_X86_5LEVEL=y Kirill A. Shutemov
2017-09-18 10:55 ` Kirill A. Shutemov
2017-09-18 10:55 ` [PATCHv7 17/19] x86/xen: Allow XEN_PV and XEN_PVH to be enabled with X86_5LEVEL Kirill A. Shutemov
2017-09-18 10:55 ` Kirill A. Shutemov
2017-09-18 10:55 ` [PATCHv7 18/19] x86/mm: Redefine some of page table helpers as macros Kirill A. Shutemov
2017-09-18 10:55 ` Kirill A. Shutemov
2017-09-18 10:55 ` [PATCHv7 19/19] x86/mm: Offset boot-time paging mode switching cost Kirill A. Shutemov
2017-09-18 10:55 ` Kirill A. Shutemov
2017-09-25 13:16 ` [PATCHv7 00/19] Boot-time switching between 4- and 5-level paging for 4.15 Kirill A. Shutemov
2017-09-25 13:16 ` Kirill A. Shutemov
2017-09-28 8:36 ` Ingo Molnar
2017-09-28 8:36 ` Ingo Molnar
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