Jan Beulich fc24d75a7f x86/entry/64/compat: Fix stack switching for XEN PV ... While in the native case entry into the kernel happens on the trampoline stack, PV Xen kernels get entered with the current thread stack right away. Hence source and destination stacks are identical in that case, and special care is needed. Other than in sync_regs() the copying done on the INT80 path isn't NMI / #MC safe, as either of these events occurring in the middle of the stack copying would clobber data on the (source) stack. There is similar code in interrupt_entry() and nmi(), but there is no fixup required because those code paths are unreachable in XEN PV guests. [ tglx: Sanitized subject, changelog, Fixes tag and stable mail address. Sigh ] Fixes: 7f2590a110 ("x86/entry/64: Use a per-CPU trampoline stack for IDT entries") Signed-off-by: Jan Beulich <jbeulich@suse.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Juergen Gross <jgross@suse.com> Acked-by: Andy Lutomirski <luto@kernel.org> Cc: Peter Anvin <hpa@zytor.com> Cc: xen-devel@lists.xenproject.org> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/5C3E1128020000780020DFAD@prv1-mh.provo.novell.com		2019-01-18 00:39:33 +01:00
..
syscalls
vdso	Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-12-26 17:03:51 -08:00
vsyscall	Remove 'type' argument from access_ok() function	2019-01-03 18:57:57 -08:00
calling.h	jump_label: move 'asm goto' support test to Kconfig	2019-01-06 09:46:51 +09:00
common.c
entry_32.S
entry_64_compat.S	x86/entry/64/compat: Fix stack switching for XEN PV	2019-01-18 00:39:33 +01:00
entry_64.S	kprobes/x86: Blacklist non-attachable interrupt functions	2018-12-06 16:52:03 +01:00
Makefile
syscall_32.c
syscall_64.c
thunk_32.S
thunk_64.S