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>,
"David H . Gutteridge" <dhgutteridge@sympatico.ca>,
jroedel@suse.de, joro@8bytes.org
Subject: [PATCH 35/37] x86/pti: Allow CONFIG_PAGE_TABLE_ISOLATION for x86_32
Date: Mon, 23 Apr 2018 17:47:38 +0200 [thread overview]
Message-ID: <1524498460-25530-36-git-send-email-joro@8bytes.org> (raw)
In-Reply-To: <1524498460-25530-1-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 c430206..afa91c6 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:[~2018-04-23 15:47 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-23 15:47 [PATCH 00/37 v6] PTI support for x86-32 Joerg Roedel
2018-04-23 15:47 ` [PATCH 01/37] x86/asm-offsets: Move TSS_sp0 and TSS_sp1 to asm-offsets.c Joerg Roedel
2018-04-23 15:47 ` [PATCH 02/37] x86/entry/32: Rename TSS_sysenter_sp0 to TSS_entry_stack Joerg Roedel
2018-04-23 15:47 ` [PATCH 03/37] x86/entry/32: Load task stack from x86_tss.sp1 in SYSENTER handler Joerg Roedel
2018-04-23 15:47 ` [PATCH 04/37] x86/entry/32: Put ESPFIX code into a macro Joerg Roedel
2018-04-23 15:47 ` [PATCH 05/37] x86/entry/32: Unshare NMI return path Joerg Roedel
2018-04-23 15:47 ` [PATCH 06/37] x86/entry/32: Split off return-to-kernel path Joerg Roedel
2018-04-23 15:47 ` [PATCH 07/37] x86/entry/32: Enter the kernel via trampoline stack Joerg Roedel
2018-04-23 15:47 ` [PATCH 08/37] x86/entry/32: Leave " Joerg Roedel
2018-04-23 15:47 ` [PATCH 09/37] x86/entry/32: Introduce SAVE_ALL_NMI and RESTORE_ALL_NMI Joerg Roedel
2018-04-23 15:47 ` [PATCH 10/37] x86/entry/32: Handle Entry from Kernel-Mode on Entry-Stack Joerg Roedel
2018-04-23 15:47 ` [PATCH 11/37] x86/entry/32: Simplify debug entry point Joerg Roedel
2018-04-23 15:47 ` [PATCH 12/37] x86/32: Use tss.sp1 as cpu_current_top_of_stack Joerg Roedel
2018-04-23 15:47 ` [PATCH 13/37] x86/entry/32: Add PTI cr3 switch to non-NMI entry/exit points Joerg Roedel
2018-04-23 15:47 ` [PATCH 14/37] x86/entry/32: Add PTI cr3 switches to NMI handler code Joerg Roedel
2018-04-23 15:47 ` [PATCH 15/37] x86/pgtable: Rename pti_set_user_pgd to pti_set_user_pgtbl Joerg Roedel
2018-04-23 15:47 ` [PATCH 16/37] x86/pgtable/pae: Unshare kernel PMDs when PTI is enabled Joerg Roedel
2018-04-23 15:47 ` [PATCH 17/37] x86/pgtable/32: Allocate 8k page-tables " Joerg Roedel
2018-04-23 15:47 ` [PATCH 18/37] x86/pgtable: Move pgdp kernel/user conversion functions to pgtable.h Joerg Roedel
2018-04-23 15:47 ` [PATCH 19/37] x86/pgtable: Move pti_set_user_pgtbl() " Joerg Roedel
2018-04-23 15:47 ` [PATCH 20/37] x86/pgtable: Move two more functions from pgtable_64.h " Joerg Roedel
2018-04-23 15:47 ` [PATCH 21/37] x86/mm/pae: Populate valid user PGD entries Joerg Roedel
2018-04-23 15:47 ` [PATCH 22/37] x86/mm/pae: Populate the user page-table with user pgd's Joerg Roedel
2018-04-23 15:47 ` [PATCH 23/37] x86/mm/legacy: " Joerg Roedel
2018-04-23 15:47 ` [PATCH 24/37] x86/mm/pti: Add an overflow check to pti_clone_pmds() Joerg Roedel
2018-04-23 15:47 ` [PATCH 25/37] x86/mm/pti: Define X86_CR3_PTI_PCID_USER_BIT on x86_32 Joerg Roedel
2018-04-23 15:47 ` [PATCH 26/37] x86/mm/pti: Clone CPU_ENTRY_AREA on PMD level " Joerg Roedel
2018-04-23 15:47 ` [PATCH 27/37] x86/mm/pti: Keep permissions when cloning kernel text in pti_clone_kernel_text() Joerg Roedel
2018-04-23 17:06 ` Kees Cook
2018-04-23 18:00 ` Joerg Roedel
2018-04-23 15:47 ` [PATCH 28/37] x86/mm/pti: Map kernel-text to user-space on 32 bit kernels Joerg Roedel
2018-04-23 17:09 ` Kees Cook
2018-04-23 17:48 ` Joerg Roedel
2018-04-23 15:47 ` [PATCH 29/37] x86/mm/dump_pagetables: Define INIT_PGD Joerg Roedel
2018-04-23 15:47 ` [PATCH 30/37] x86/pgtable/pae: Use separate kernel PMDs for user page-table Joerg Roedel
2018-04-23 15:47 ` [PATCH 31/37] x86/ldt: Reserve address-space range on 32 bit for the LDT Joerg Roedel
2018-04-23 15:47 ` [PATCH 32/37] x86/ldt: Define LDT_END_ADDR Joerg Roedel
2018-04-23 15:47 ` [PATCH 33/37] x86/ldt: Split out sanity check in map_ldt_struct() Joerg Roedel
2018-04-23 15:47 ` [PATCH 34/37] x86/ldt: Enable LDT user-mapping for PAE Joerg Roedel
2018-04-23 15:47 ` Joerg Roedel [this message]
2018-04-23 15:47 ` [PATCH 36/37] x86/mm/pti: Add Warning when booting on a PCID capable CPU Joerg Roedel
2018-04-23 15:47 ` [PATCH 37/37] x86/entry/32: Add debug code to check entry/exit cr3 Joerg Roedel
2018-04-23 16:45 ` [PATCH 00/37 v6] PTI support for x86-32 Linus Torvalds
2018-04-23 17:45 ` Joerg Roedel
2018-04-23 17:49 ` Linus Torvalds
2018-04-23 19:38 ` Pavel Machek
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