From: Jeremy Fitzhardinge <jeremy@goop.org>
To: Ingo Molnar <mingo@elte.hu>
Cc: LKML <linux-kernel@vger.kernel.org>,
x86@kernel.org, Stephen Tweedie <sct@redhat.com>,
Eduardo Habkost <ehabkost@redhat.com>,
Mark McLoughlin <markmc@redhat.com>,
x86@kernel.org
Subject: [PATCH 1 of 8] x86_64: create global mappings in head_64.S
Date: Tue, 01 Jul 2008 16:46:30 -0700 [thread overview]
Message-ID: <353bdb9d31cbee91deea.1214955990@localhost> (raw)
In-Reply-To: <patchbomb.1214955989@localhost>
When creating the initial set of pagetables in head_64.S, create them
global. This matches the mappings created later in the kernel boot;
this means we can reuse these pagetables without causing an
inconsistency.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
---
arch/x86/kernel/head_64.S | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kernel/head_64.S b/arch/x86/kernel/head_64.S
--- a/arch/x86/kernel/head_64.S
+++ b/arch/x86/kernel/head_64.S
@@ -374,7 +374,7 @@
/* Since I easily can, map the first 1G.
* Don't set NX because code runs from these pages.
*/
- PMDS(0, __PAGE_KERNEL_LARGE_EXEC, PTRS_PER_PMD)
+ PMDS(0, __PAGE_KERNEL_LARGE_EXEC | _PAGE_GLOBAL, PTRS_PER_PMD)
NEXT_PAGE(level2_kernel_pgt)
/*
next prev parent reply other threads:[~2008-07-02 1:05 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-01 23:46 [PATCH 0 of 8] x86/xen: updated physical mapping patches, and _PAGE_GLOBAL cleanup Jeremy Fitzhardinge
2008-07-01 23:46 ` Jeremy Fitzhardinge [this message]
2008-07-01 23:46 ` [PATCH 2 of 8] x86_64: unmap iomapping before populating Jeremy Fitzhardinge
2008-07-01 23:46 ` [PATCH 3 of 8] x86_64/setup: preserve existing PUD mappings Jeremy Fitzhardinge
2008-07-01 23:46 ` [PATCH 4 of 8] x86_64/setup: unconditionally populate the pgd Jeremy Fitzhardinge
2008-07-01 23:46 ` [PATCH 5 of 8] x86_64/setup: create 4k mappings if the cpu doens't support PSE Jeremy Fitzhardinge
2008-07-01 23:46 ` [PATCH 6 of 8] x86: always set _PAGE_GLOBAL in _PAGE_KERNEL* flags Jeremy Fitzhardinge
2008-07-01 23:46 ` [PATCH 7 of 8] x86_32: remove __PAGE_KERNEL(_EXEC) Jeremy Fitzhardinge
2008-07-01 23:46 ` [PATCH 8 of 8] x86/cpa: use an undefined PTE bit for testing CPA Jeremy Fitzhardinge
2008-07-04 10:33 ` [PATCH 0 of 8] x86/xen: updated physical mapping patches, and _PAGE_GLOBAL cleanup Ingo Molnar
2008-07-04 15:56 ` Jeremy Fitzhardinge
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