From: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
To: Ingo Molnar <mingo@redhat.com>,
x86@kernel.org, Thomas Gleixner <tglx@linutronix.de>,
"H. Peter Anvin" <hpa@zytor.com>,
g@black.fi.intel.com
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Andy Lutomirski <luto@amacapital.net>,
Borislav Petkov <bp@suse.de>, Andi Kleen <ak@linux.intel.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 5/9] x86/mm: Make LDT_BASE_ADDR dynamic
Date: Wed, 14 Feb 2018 16:32:38 +0300 [thread overview]
Message-ID: <20180214133238.cliqsqp5rdggjzqy@black.fi.intel.com> (raw)
In-Reply-To: <20180214111656.88514-6-kirill.shutemov@linux.intel.com>
On Wed, Feb 14, 2018 at 11:16:52AM +0000, Kirill A. Shutemov wrote:
> LDT_BASE_ADDR has different value in 4- and 5-level paging
> configurations.
>
> We need to make it dynamic in preparation for boot-time switching
> between paging modes.
>
> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
I've just realized that the patch that I'm splitting has hunk that belong
here.
Could you fold it in?
Sorry for this.
diff --git a/arch/x86/mm/dump_pagetables.c b/arch/x86/mm/dump_pagetables.c
index 9efee6f464ab..a32f0621d664 100644
--- a/arch/x86/mm/dump_pagetables.c
+++ b/arch/x86/mm/dump_pagetables.c
@@ -579,6 +579,9 @@ static int __init pt_dump_init(void)
address_markers[KASAN_SHADOW_START_NR].start_address = KASAN_SHADOW_START;
address_markers[KASAN_SHADOW_END_NR].start_address = KASAN_SHADOW_END;
#endif
+#ifdef CONFIG_MODIFY_LDT_SYSCALL
+ address_markers[LDT_NR].start_address = LDT_BASE_ADDR;
+#endif
#endif
#ifdef CONFIG_X86_32
address_markers[VMALLOC_START_NR].start_address = VMALLOC_START;
--
Kirill A. Shutemov
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next prev parent reply other threads:[~2018-02-14 13:32 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-14 11:16 [PATCH 0/9] x86/mm: Dynamic memory layout Kirill A. Shutemov
2018-02-14 11:16 ` [PATCH 1/9] x86/mm/64: Make __PHYSICAL_MASK_SHIFT always 52 Kirill A. Shutemov
2018-02-14 11:16 ` [PATCH 2/9] mm/zsmalloc: Prepare to variable MAX_PHYSMEM_BITS Kirill A. Shutemov
2018-02-14 11:16 ` [PATCH 3/9] x86/mm: Make virtual memory layout movable for CONFIG_X86_5LEVEL Kirill A. Shutemov
2018-02-14 11:16 ` [PATCH 4/9] x86: Introduce pgtable_l5_enabled Kirill A. Shutemov
2018-02-14 11:16 ` [PATCH 5/9] x86/mm: Make LDT_BASE_ADDR dynamic Kirill A. Shutemov
2018-02-14 13:32 ` Kirill A. Shutemov [this message]
2018-02-14 11:16 ` [PATCH 6/9] x86/mm: Make PGDIR_SHIFT and PTRS_PER_P4D variable Kirill A. Shutemov
2018-02-14 11:16 ` [PATCH 7/9] x86/mm: Make MAX_PHYSADDR_BITS and MAX_PHYSMEM_BITS dynamic Kirill A. Shutemov
2018-02-14 11:16 ` [PATCH 8/9] x86/mm: Make __VIRTUAL_MASK_SHIFT dynamic Kirill A. Shutemov
2018-02-14 17:22 ` Andy Lutomirski
2018-02-14 17:55 ` Kirill A. Shutemov
2018-02-14 18:02 ` Andy Lutomirski
2018-02-14 11:16 ` [PATCH 9/9] x86/mm: Adjust virtual address space layout in early boot Kirill A. Shutemov
2018-02-14 12:10 ` Ingo Molnar
2018-02-14 12:19 ` Kirill A. Shutemov
2018-02-14 12:26 ` Ingo Molnar
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