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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=353bdb9d31cbee91deea.1214955990@localhost \
--to=jeremy@goop.org \
--cc=ehabkost@redhat.com \
--cc=linux-kernel@vger.kernel.org \
--cc=markmc@redhat.com \
--cc=mingo@elte.hu \
--cc=sct@redhat.com \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.