From: Joerg Roedel <joro@8bytes.org>
To: Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@kernel.org>, "H . Peter Anvin" <hpa@zytor.com>
Cc: x86@kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Linus Torvalds <torvalds@linux-foundation.org>,
Andy Lutomirski <luto@kernel.org>,
Dave Hansen <dave.hansen@intel.com>,
Josh Poimboeuf <jpoimboe@redhat.com>,
Juergen Gross <jgross@suse.com>,
Peter Zijlstra <peterz@infradead.org>,
Borislav Petkov <bp@alien8.de>, Jiri Kosina <jkosina@suse.cz>,
Boris Ostrovsky <boris.ostrovsky@oracle.com>,
Brian Gerst <brgerst@gmail.com>,
David Laight <David.Laight@aculab.com>,
Denys Vlasenko <dvlasenk@redhat.com>,
Eduardo Valentin <eduval@amazon.com>,
Greg KH <gregkh@linuxfoundation.org>,
Will Deacon <will.deacon@arm.com>,
aliguori@amazon.com, daniel.gruss@iaik.tugraz.at,
hughd@google.com, keescook@google.com,
Andrea Arcangeli <aarcange@redhat.com>,
Waiman Long <llong@redhat.com>, Pavel Machek <pavel@ucw.cz>,
jroedel@suse.de, joro@8bytes.org
Subject: [PATCH 33/34] x86/pti: Allow CONFIG_PAGE_TABLE_ISOLATION for x86_32
Date: Mon, 5 Mar 2018 11:26:02 +0100 [thread overview]
Message-ID: <1520245563-8444-34-git-send-email-joro@8bytes.org> (raw)
In-Reply-To: <1520245563-8444-1-git-send-email-joro@8bytes.org>
From: Joerg Roedel <jroedel@suse.de>
Allow PTI to be compiled on x86_32.
Signed-off-by: Joerg Roedel <jroedel@suse.de>
---
security/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/security/Kconfig b/security/Kconfig
index b0cb9a5..93d85fd 100644
--- a/security/Kconfig
+++ b/security/Kconfig
@@ -57,7 +57,7 @@ config SECURITY_NETWORK
config PAGE_TABLE_ISOLATION
bool "Remove the kernel mapping in user mode"
default y
- depends on X86_64 && !UML
+ depends on X86 && !UML
help
This feature reduces the number of hardware side channels by
ensuring that the majority of kernel addresses are not mapped
--
2.7.4
next prev parent reply other threads:[~2018-03-05 10:26 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-05 10:25 [PATCH 00/34 v3] PTI support for x32 Joerg Roedel
2018-03-05 10:25 ` [PATCH 01/34] x86/asm-offsets: Move TSS_sp0 and TSS_sp1 to asm-offsets.c Joerg Roedel
2018-03-05 10:25 ` [PATCH 02/34] x86/entry/32: Rename TSS_sysenter_sp0 to TSS_entry_stack Joerg Roedel
2018-03-05 10:25 ` [PATCH 03/34] x86/entry/32: Load task stack from x86_tss.sp1 in SYSENTER handler Joerg Roedel
2018-03-05 10:25 ` [PATCH 04/34] x86/entry/32: Put ESPFIX code into a macro Joerg Roedel
2018-03-05 10:25 ` [PATCH 05/34] x86/entry/32: Unshare NMI return path Joerg Roedel
2018-03-05 10:25 ` [PATCH 06/34] x86/entry/32: Split off return-to-kernel path Joerg Roedel
2018-03-05 10:25 ` [PATCH 07/34] x86/entry/32: Restore segments before int registers Joerg Roedel
2018-03-05 12:17 ` Linus Torvalds
2018-03-05 13:12 ` Joerg Roedel
2018-03-05 14:51 ` Brian Gerst
2018-03-05 16:44 ` Joerg Roedel
2018-03-05 17:21 ` Brian Gerst
2018-03-05 18:23 ` Linus Torvalds
2018-03-05 18:36 ` Joerg Roedel
2018-03-05 20:38 ` Brian Gerst
2018-03-05 20:50 ` Linus Torvalds
2018-03-05 21:35 ` Joerg Roedel
2018-03-05 21:58 ` Linus Torvalds
2018-03-05 22:03 ` H. Peter Anvin
2018-03-06 7:04 ` Ingo Molnar
2018-03-06 13:45 ` Dave Hansen
2018-03-06 8:38 ` Joerg Roedel
2018-03-05 10:25 ` [PATCH 08/34] x86/entry/32: Enter the kernel via trampoline stack Joerg Roedel
2018-03-05 10:25 ` [PATCH 09/34] x86/entry/32: Leave " Joerg Roedel
2018-03-05 10:25 ` [PATCH 10/34] x86/entry/32: Introduce SAVE_ALL_NMI and RESTORE_ALL_NMI Joerg Roedel
2018-03-05 10:25 ` [PATCH 11/34] x86/entry/32: Handle Entry from Kernel-Mode on Entry-Stack Joerg Roedel
2018-03-05 16:41 ` Brian Gerst
2018-03-05 18:25 ` Joerg Roedel
2018-03-05 20:32 ` Brian Gerst
2018-03-06 12:27 ` Joerg Roedel
2018-03-05 10:25 ` [PATCH 12/34] x86/entry/32: Simplify debug entry point Joerg Roedel
2018-03-05 10:25 ` [PATCH 13/34] x86/entry/32: Add PTI cr3 switches to NMI handler code Joerg Roedel
2018-03-05 10:25 ` [PATCH 14/34] x86/entry/32: Add PTI cr3 switch to non-NMI entry/exit points Joerg Roedel
2018-03-05 10:25 ` [PATCH 15/34] x86/pgtable: Rename pti_set_user_pgd to pti_set_user_pgtbl Joerg Roedel
2018-03-05 10:25 ` [PATCH 16/34] x86/pgtable/pae: Unshare kernel PMDs when PTI is enabled Joerg Roedel
2018-03-05 10:25 ` [PATCH 17/34] x86/pgtable/32: Allocate 8k page-tables " Joerg Roedel
2018-03-05 10:25 ` [PATCH 18/34] x86/pgtable: Move pgdp kernel/user conversion functions to pgtable.h Joerg Roedel
2018-03-05 10:25 ` [PATCH 19/34] x86/pgtable: Move pti_set_user_pgtbl() " Joerg Roedel
2018-03-05 10:25 ` [PATCH 20/34] x86/pgtable: Move two more functions from pgtable_64.h " Joerg Roedel
2018-03-05 10:25 ` [PATCH 21/34] x86/mm/pae: Populate valid user PGD entries Joerg Roedel
2018-03-05 10:25 ` [PATCH 22/34] x86/mm/pae: Populate the user page-table with user pgd's Joerg Roedel
2018-03-05 10:25 ` [PATCH 23/34] x86/mm/legacy: " Joerg Roedel
2018-03-05 10:25 ` [PATCH 24/34] x86/mm/pti: Add an overflow check to pti_clone_pmds() Joerg Roedel
2018-03-05 10:25 ` [PATCH 25/34] x86/mm/pti: Define X86_CR3_PTI_PCID_USER_BIT on x86_32 Joerg Roedel
2018-03-05 10:25 ` [PATCH 26/34] x86/mm/pti: Clone CPU_ENTRY_AREA on PMD level " Joerg Roedel
2018-03-05 10:25 ` [PATCH 27/34] x86/mm/dump_pagetables: Define INIT_PGD Joerg Roedel
2018-03-05 10:25 ` [PATCH 28/34] x86/pgtable/pae: Use separate kernel PMDs for user page-table Joerg Roedel
2018-03-05 10:25 ` [PATCH 29/34] x86/ldt: Reserve address-space range on 32 bit for the LDT Joerg Roedel
2018-03-05 10:25 ` [PATCH 30/34] x86/ldt: Define LDT_END_ADDR Joerg Roedel
2018-03-05 10:26 ` [PATCH 31/34] x86/ldt: Split out sanity check in map_ldt_struct() Joerg Roedel
2018-03-05 10:26 ` [PATCH 32/34] x86/ldt: Enable LDT user-mapping for PAE Joerg Roedel
2018-03-05 10:26 ` Joerg Roedel [this message]
2018-03-05 10:26 ` [PATCH 34/34] x86/mm/pti: Add Warning when booting on a PCIE capable CPU Joerg Roedel
2018-03-05 13:39 ` Waiman Long
2018-03-05 16:09 ` Denys Vlasenko
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=1520245563-8444-34-git-send-email-joro@8bytes.org \
--to=joro@8bytes.org \
--cc=David.Laight@aculab.com \
--cc=aarcange@redhat.com \
--cc=aliguori@amazon.com \
--cc=boris.ostrovsky@oracle.com \
--cc=bp@alien8.de \
--cc=brgerst@gmail.com \
--cc=daniel.gruss@iaik.tugraz.at \
--cc=dave.hansen@intel.com \
--cc=dvlasenk@redhat.com \
--cc=eduval@amazon.com \
--cc=gregkh@linuxfoundation.org \
--cc=hpa@zytor.com \
--cc=hughd@google.com \
--cc=jgross@suse.com \
--cc=jkosina@suse.cz \
--cc=jpoimboe@redhat.com \
--cc=jroedel@suse.de \
--cc=keescook@google.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=llong@redhat.com \
--cc=luto@kernel.org \
--cc=mingo@kernel.org \
--cc=pavel@ucw.cz \
--cc=peterz@infradead.org \
--cc=tglx@linutronix.de \
--cc=torvalds@linux-foundation.org \
--cc=will.deacon@arm.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).