Andy Lutomirski 1a935bc3d4 x86/entry: Move SYSENTER_stack to the beginning of struct tss_struct ...

SYSENTER_stack should have reliable overflow detection, which
means that it needs to be at the bottom of a page, not the top.
Move it to the beginning of struct tss_struct and page-align it.

Also add an assertion to make sure that the fixed hardware TSS
doesn't cross a page boundary.

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Borislav Petkov <bp@suse.de>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Borislav Petkov <bpetkov@suse.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: David Laight <David.Laight@aculab.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Eduardo Valentin <eduval@amazon.com>
Cc: Greg KH <gregkh@linuxfoundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: aliguori@amazon.com
Cc: daniel.gruss@iaik.tugraz.at
Cc: hughd@google.com
Cc: keescook@google.com
Link: https://lkml.kernel.org/r/20171204150605.881827433@linutronix.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>

2017-12-17 13:59:56 +01:00

..

boot

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

configs

x86/unwind: Rename unwinder config options to 'CONFIG_UNWINDER_*'

2017-10-14 10:12:12 +02:00

crypto

Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

2017-11-06 09:05:03 -08:00

entry

x86/entry/64: Allocate and enable the SYSENTER stack

2017-12-17 13:59:53 +01:00

events

locking/barriers: Convert users of lockless_dereference() to READ_ONCE()

2017-12-17 13:57:15 +01:00

hyperv

x86/virt: Add enum for hypervisors to replace x86_hyper

2017-11-10 10:03:12 +01:00

ia32

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

include

x86/entry: Move SYSENTER_stack to the beginning of struct tss_struct

2017-12-17 13:59:56 +01:00

kernel

x86/entry: Move SYSENTER_stack to the beginning of struct tss_struct

2017-12-17 13:59:56 +01:00

kvm

x86/entry: Fix assumptions that the HW TSS is at the beginning of cpu_tss

2017-12-17 13:59:55 +01:00

lib

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

math-emu

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

mm

x86/kasan/64: Teach KASAN about the cpu_entry_area

2017-12-17 13:59:55 +01:00

net

bpf: fix bpf_tail_call() x64 JIT

2017-10-03 16:04:44 -07:00

oprofile

x86/oprofile/ppro: Do not use __this_cpu*() in preemptible context

2017-11-08 13:01:54 +01:00

pci

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

platform

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

power

x86/entry: Fix assumptions that the HW TSS is at the beginning of cpu_tss

2017-12-17 13:59:55 +01:00

purgatory

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

ras

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

realmode

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

tools

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

um

Merge commit 'upstream-x86-entry' into WIP.x86/mm

2017-12-17 12:58:53 +01:00

video

x86/video: Don't assume all FB devices are PCI devices

2016-03-15 11:08:26 +01:00

xen

x86/mm/fixmap: Generalize the GDT fixmap mechanism, introduce struct cpu_entry_area

2017-12-17 13:59:54 +01:00

.gitignore

…

Kbuild

Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2017-09-07 09:25:15 -07:00

Kconfig

x86/mm/kasan: Don't use vmemmap_populate() to initialize shadow

2017-12-17 13:57:26 +01:00

Kconfig.cpu

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

Kconfig.debug

Merge commit 'upstream-x86-entry' into WIP.x86/mm

2017-12-17 12:58:53 +01:00

Makefile

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

Makefile_32.cpu

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

Makefile.um

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00