Petr Tesarik 3db3eb2852 x86/setup: Do not reserve a crash kernel region if booted on Xen PV ... Xen PV domains cannot shut down and start a crash kernel. Instead, the crashing kernel makes a SCHEDOP_shutdown hypercall with the reason code SHUTDOWN_crash, cf. xen_crash_shutdown() machine op in arch/x86/xen/enlighten_pv.c. A crash kernel reservation is merely a waste of RAM in this case. It may also confuse users of kexec_load(2) and/or kexec_file_load(2). When flags include KEXEC_ON_CRASH or KEXEC_FILE_ON_CRASH, respectively, these syscalls return success, which is technically correct, but the crash kexec image will never be actually used. Signed-off-by: Petr Tesarik <ptesarik@suse.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Juergen Gross <jgross@suse.com> Cc: Tom Lendacky <thomas.lendacky@amd.com> Cc: Dou Liyang <douly.fnst@cn.fujitsu.com> Cc: Mikulas Patocka <mpatocka@redhat.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: xen-devel@lists.xenproject.org Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Borislav Petkov <bp@suse.de> Cc: Jean Delvare <jdelvare@suse.de> Link: https://lkml.kernel.org/r/20180425120835.23cef60c@ezekiel.suse.cz		2018-04-27 17:06:28 +02:00
..
acpi	x86/acpi: Prevent X2APIC id 0xffffffff from being accounted	2018-04-17 11:56:31 +02:00
apic	Merge branch 'WIP.x86/asm' into x86/urgent, because the topic is ready	2018-04-12 09:42:34 +02:00
cpu	x86/cpu/intel: Add missing TLB cpuid values	2018-04-26 21:42:44 +02:00
fpu
kprobes	x86/kprobes: Fix kernel crash when probing .entry_trampoline code	2018-03-09 09:58:36 +01:00
.gitignore
alternative.c
amd_gart_64.c	x86/dma/amd_gart: Use dma_direct_{alloc,free}()	2018-03-20 10:01:57 +01:00
amd_nb.c	x86/cpu: Rename cpu_data.x86_mask to cpu_data.x86_stepping	2018-02-15 01:15:52 +01:00
apb_timer.c
aperture_64.c
apm_32.c	vfs: do bulk POLL* -> EPOLL* replacement	2018-02-11 14:34:03 -08:00
asm-offsets_32.c	x86/cpu: Rename cpu_data.x86_mask to cpu_data.x86_stepping	2018-02-15 01:15:52 +01:00
asm-offsets_64.c
asm-offsets.c
audit_64.c
bootflag.c
check.c
cpuid.c	x86/cpuid: Allow cpuid_read() to schedule	2018-03-27 12:01:48 +02:00
crash_dump_32.c
crash_dump_64.c
crash.c	kexec_file, x86: move re-factored code to generic side	2018-04-13 17:10:27 -07:00
devicetree.c	Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-04-02 16:15:32 -07:00
doublefault.c
dumpstack_32.c	x86/dumpstack: Unify show_regs()	2018-03-08 12:04:59 +01:00
dumpstack_64.c	x86/dumpstack: Unify show_regs()	2018-03-08 12:04:59 +01:00
dumpstack.c	x86/dumpstack: Unify show_regs()	2018-03-08 12:04:59 +01:00
e820.c	x86/boot/e820: Implement a range manipulation operator	2018-02-26 08:44:52 +01:00
early_printk.c
early-quirks.c
ebda.c
eisa.c
espfix_64.c	x86/espfix: Document use of _PAGE_GLOBAL	2018-04-09 18:27:33 +02:00
ftrace_32.S
ftrace_64.S
ftrace.c
head_32.S	x86/cpu: Rename cpu_data.x86_mask to cpu_data.x86_stepping	2018-02-15 01:15:52 +01:00
head_64.S	x86/mm: Comment _PAGE_GLOBAL mystery	2018-04-12 09:05:58 +02:00
head32.c
head64.c	x86/mm: Do not auto-massage page protections	2018-04-12 09:04:22 +02:00
hpet.c
hw_breakpoint.c
i8237.c
i8253.c
i8259.c
idt.c	Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-03-31 07:50:30 -10:00
io_delay.c
ioport.c	x86/ioport: add ksys_ioperm() helper; remove in-kernel calls to sys_ioperm()	2018-04-02 20:16:12 +02:00
irq_32.c
irq_64.c
irq_work.c
irq.c	Drivers: hv: vmbus: Implement Direct Mode for stimer0	2018-03-06 09:57:17 -08:00
irqinit.c	x86/apic: Simplify init_bsp_APIC() usage	2018-02-13 17:30:38 +01:00
itmt.c
jailhouse.c	x86/jailhouse: Fix incorrect SPDX identifier	2018-04-23 10:17:28 +02:00
jump_label.c
kdebugfs.c
kexec-bzimage64.c	kexec_file: do not add extra alignment to efi memmap	2018-04-20 17:18:36 -07:00
kgdb.c
ksysfs.c
kvm.c	ARM:	2018-04-09 11:42:31 -07:00
kvmclock.c
ldt.c	x86/ldt: Fix support_pte_mask filtering in map_ldt_struct()	2018-04-16 11:20:34 -07:00
livepatch.c
machine_kexec_32.c	x86/apic: Remove the (now) unused disable_IO_APIC() function	2018-02-17 11:47:45 +01:00
machine_kexec_64.c	kernel/kexec_file.c: remove mis-use of sh_offset field during purgatory load	2018-04-13 17:10:28 -07:00
Makefile	Merge branch 'x86-dma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-04-02 17:18:45 -07:00
mmconf-fam10h_64.c
module.c	x86: Treat R_X86_64_PLT32 as R_X86_64_PC32	2018-02-22 09:01:10 -08:00
mpparse.c	Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-02-14 17:02:15 -08:00
msr.c
nmi_selftest.c
nmi.c
paravirt_patch_32.c
paravirt_patch_64.c
paravirt-spinlocks.c
paravirt.c	x86/mm: Rename flush_tlb_single() and flush_tlb_one() to __flush_tlb_one_[user|kernel]()	2018-02-15 01:15:52 +01:00
pci-calgary_64.c	x86/dma: Remove dma_alloc_coherent_gfp_flags()	2018-03-20 10:01:58 +01:00
pci-dma.c	headers: untangle kmemleak.h from mm.h	2018-04-05 21:36:27 -07:00
pci-iommu_table.c
pci-swiotlb.c	x86/dma: Use generic swiotlb_ops	2018-03-20 10:01:57 +01:00
pcspeaker.c
perf_regs.c
platform-quirks.c
pmem.c
probe_roms.c
process_32.c
process_64.c	x86/kvm/vmx: read MSR_{FS,KERNEL_GS}_BASE from current->thread	2018-03-16 22:03:53 +01:00
process.c
ptrace.c
pvclock.c
quirks.c
reboot_fixups_32.c
reboot.c	x86/apic: Fix restoring boot IRQ mode in reboot and kexec/kdump	2018-02-17 11:47:45 +01:00
relocate_kernel_32.S
relocate_kernel_64.S
resource.c
rtc.c	x86/rtc: Stop using deprecated functions	2018-03-15 09:47:24 +01:00
setup_percpu.c	x86/cpu_entry_area: Sync cpu_entry_area to initial_page_table	2018-03-01 09:48:27 +01:00
setup.c	x86/setup: Do not reserve a crash kernel region if booted on Xen PV	2018-04-27 17:06:28 +02:00
signal_compat.c	parisc/signal: Add FPE_CONDTRAP for conditional trap handling	2018-04-11 11:40:35 +02:00
signal.c	x86/sigreturn: use SYSCALL_DEFINE0	2018-04-02 20:16:14 +02:00
smp.c
smpboot.c	x86/smpboot: Don't use mwait_play_dead() on AMD systems	2018-04-26 16:06:19 +02:00
stacktrace.c
step.c
sys_x86_64.c	mm: add ksys_mmap_pgoff() helper; remove in-kernel calls to sys_mmap_pgoff()	2018-04-02 20:16:11 +02:00
sysfb_efi.c
sysfb_simplefb.c
sysfb.c
tboot.c
tce_64.c
time.c
tls.c
tls.h
topology.c
trace_clock.c
tracepoint.c
traps.c	x86/entry/64: Don't use IST entry for #BP stack	2018-03-23 21:10:36 +01:00
tsc_msr.c
tsc_sync.c
tsc.c	x86/tsc: Prevent 32bit truncation in calc_hpet_ref()	2018-04-17 11:50:42 +02:00
umip.c
unwind_frame.c
unwind_guess.c
unwind_orc.c	extable: Make init_kernel_text() global	2018-02-21 16:54:06 +01:00
uprobes.c
verify_cpu.S
vm86_32.c	x86/vm86/32: Fix POPF emulation	2018-03-14 09:21:01 +01:00
vmlinux.lds.S	Merge branch 'linus' into x86/build to pick up dependencies	2018-03-20 10:56:18 +01:00
vsmp_64.c
x86_init.c	xen, mm: allow deferred page initialization for xen pv domains	2018-04-11 10:28:38 -07:00