Andy Lutomirski f41f082422 x86/entry/xen: Route #DB correctly on Xen PV ... On Xen PV, #DB doesn't use IST. It still needs to be correctly routed depending on whether it came from user or kernel mode. Get rid of DECLARE/DEFINE_IDTENTRY_XEN -- it was too hard to follow the logic. Instead, route #DB and NMI through DECLARE/DEFINE_IDTENTRY_RAW on Xen, and do the right thing for #DB. Also add more warnings to the exc_debug* handlers to make this type of failure more obvious. This fixes various forms of corruption that happen when usermode triggers #DB on Xen PV. Fixes: 4c0dcd8350 ("x86/entry: Implement user mode C entry points for #DB and #MCE") Signed-off-by: Andy Lutomirski <luto@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/4163e733cce0b41658e252c6c6b3464f33fdff17.1593795633.git.luto@kernel.org		2020-07-04 19:47:25 +02:00
..
Kconfig	x86/Kconfig: Fix Kconfig indentation	2019-12-10 18:43:21 +01:00
Makefile	xen/pvh: Create a new file for Xen specific PVH code	2018-12-13 13:41:49 -05:00
apic.c	Merge branch 'WIP.x86/asm' into x86/urgent, because the topic is ready	2018-04-12 09:42:34 +02:00
debugfs.c	x86: xen: no need to check return value of debugfs_create functions	2019-06-03 15:49:07 +02:00
debugfs.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
efi.c	efi/libstub: Add definitions for console input and events	2020-05-20 19:09:20 +02:00
enlighten.c	x86/xen: Return from panic notifier	2019-10-07 17:53:30 -04:00
enlighten_hvm.c	x86/entry: Convert XEN hypercall vector to IDTENTRY_SYSVEC	2020-06-11 15:15:15 +02:00
enlighten_pv.c	x86/entry/xen: Route #DB correctly on Xen PV	2020-07-04 19:47:25 +02:00
enlighten_pvh.c	xen/pvh: correctly setup the PV EFI interface for dom0	2019-04-25 10:36:25 -04:00
grant-table.c	mm: don't include asm/pgtable.h if linux/mm.h is already included	2020-06-09 09:39:13 -07:00
irq.c	x86/paravirt: Use a single ops structure	2018-09-03 16:50:35 +02:00
mmu.c	x86/xen: Add SPDX identifier in arch/x86/xen files	2018-09-03 16:50:33 +02:00
mmu.h	mm: update ptep_modify_prot_start/commit to take vm_area_struct as arg	2019-03-05 21:07:18 -08:00
mmu_hvm.c	x86/paravirt: Use a single ops structure	2018-09-03 16:50:35 +02:00
mmu_pv.c	mm: reorder includes after introduction of linux/pgtable.h	2020-06-09 09:39:13 -07:00
multicalls.c	treewide: Switch printk users from %pf and %pF to %ps and %pS, respectively	2019-04-09 14:19:06 +02:00
multicalls.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
p2m.c	x86: xen: no need to check return value of debugfs_create functions	2019-06-03 15:49:07 +02:00
pci-swiotlb-xen.c	x86/xen: Add SPDX identifier in arch/x86/xen files	2018-09-03 16:50:33 +02:00
platform-pci-unplug.c	xen/pvh: don't try to unplug emulated devices	2018-10-26 09:16:57 +02:00
pmu.c	Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-10-23 16:16:40 +01:00
pmu.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
setup.c	x86/entry: Switch XEN/PV hypercall entry to IDTENTRY	2020-06-11 15:15:08 +02:00
smp.c	x86/smp: Replace cpu_up/down() with add/remove_cpu()	2020-03-25 12:59:35 +01:00
smp.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
smp_hvm.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
smp_pv.c	x86/entry: Switch XEN/PV hypercall entry to IDTENTRY	2020-06-11 15:15:08 +02:00
spinlock.c	Revert "x86/paravirt: Set up the virt_spin_lock_key after static keys get initialized"	2019-07-17 08:09:57 +02:00
suspend.c	x86/xen: Zero MSR_IA32_SPEC_CTRL before suspend	2018-02-28 16:03:19 +01:00
suspend_hvm.c	xen: Move xen_setup_callback_vector() definition to include/xen/hvm.h	2020-06-11 15:15:19 +02:00
suspend_pv.c	x86/xen/time: Initialize pv xen time in init_hypervisor_platform()	2018-07-20 00:02:39 +02:00
time.c	x86/vdso: Use generic VDSO clock mode storage	2020-02-17 14:40:23 +01:00
trace.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
vdso.h	x86/xen: Add SPDX identifier in arch/x86/xen files	2018-09-03 16:50:33 +02:00
vga.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
xen-asm.S	x86/asm: Change all ENTRY+ENDPROC to SYM_FUNC_*	2019-10-18 11:58:33 +02:00
xen-asm_32.S	x86/entry: Switch XEN/PV hypercall entry to IDTENTRY	2020-06-11 15:15:08 +02:00
xen-asm_64.S	x86/entry/xen: Route #DB correctly on Xen PV	2020-07-04 19:47:25 +02:00
xen-head.S	x86/xen: fix booting 32-bit pv guest	2020-04-09 16:53:48 +02:00
xen-ops.h	xen: Move xen_setup_callback_vector() definition to include/xen/hvm.h	2020-06-11 15:15:19 +02:00