linux/arch/x86/entry
Boris Ostrovsky 373ccbd6eb x86/vsyscall/64: Use proper accessor to update P4D entry
commit 31ad7f8e7d upstream.

Writing to it directly does not work for Xen PV guests.

Fixes: 49275fef98 ("x86/vsyscall/64: Explicitly set _PAGE_USER in the pagetable hierarchy")
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Juergen Gross <jgross@suse.com>
Acked-by: Andy Lutomirski <luto@kernel.org>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20180319143154.3742-1-boris.ostrovsky@oracle.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2018-03-28 18:24:46 +02:00
..
syscalls x86/build: Beautify build log of syscall headers 2017-12-25 14:26:16 +01:00
vdso License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
vsyscall x86/vsyscall/64: Use proper accessor to update P4D entry 2018-03-28 18:24:46 +02:00
calling.h x86/entry/64: Use 'xorl' for faster register clearing 2018-03-15 10:54:36 +01:00
common.c x86/syscall: Sanitize syscall table de-references under speculation 2018-02-07 11:12:23 -08:00
entry_32.S Revert "x86/retpoline: Simplify vmexit_fill_RSB()" 2018-03-15 10:54:36 +01:00
entry_64.S x86/entry/64: Don't use IST entry for #BP stack 2018-03-28 18:24:45 +02:00
entry_64_compat.S x86/entry/64: Use 'xorl' for faster register clearing 2018-03-15 10:54:36 +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
syscall_32.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
syscall_64.c x86/entry/64: Remove the SYSCALL64 fast path 2018-02-07 11:12:22 -08:00
thunk_32.S x86: move exports to actual definitions 2016-08-07 23:47:15 -04:00
thunk_64.S x86: move exports to actual definitions 2016-08-07 23:47:15 -04:00