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Groups > linux.kernel > #1575008

[PATCH v3 9/9] xen/pvh: Use Xen's emergency_restart op for PVH guests

From Boris Ostrovsky <boris.ostrovsky@oracle.com>
Newsgroups linux.kernel
Subject [PATCH v3 9/9] xen/pvh: Use Xen's emergency_restart op for PVH guests
Date 2017-02-06 18:10 +0100
Message-ID <t7UXF-7LS-43@gated-at.bofh.it> (permalink)
References <t7UXD-7LS-5@gated-at.bofh.it>
Organization linux.* mail to news gateway

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Using native_machine_emergency_restart (called during reboot) will
lead PVH guests to machine_real_restart()  where we try to use
real_mode_header which is not initialized.

Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
---
 arch/x86/xen/enlighten.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 6d406f3..ec1d5c4 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -1924,6 +1924,9 @@ static void __init xen_hvm_guest_init(void)
 	x86_init.irqs.intr_init = xen_init_IRQ;
 	xen_hvm_init_time_ops();
 	xen_hvm_init_mmu_ops();
+
+	if (xen_pvh_domain())
+		machine_ops.emergency_restart = xen_emergency_restart;
 #ifdef CONFIG_KEXEC_CORE
 	machine_ops.shutdown = xen_hvm_shutdown;
 	machine_ops.crash_shutdown = xen_hvm_crash_shutdown;
-- 
2.7.4

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Thread

[PATCH v3 0/9] PVH v2 support (domU) Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2017-02-06 18:10 +0100
  [PATCH v3 6/9] xen/pvh: Initialize grant table for PVH guests Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2017-02-06 18:10 +0100
  [PATCH v3 7/9] xen/pvh: PVH guests always have PV devices Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2017-02-06 18:10 +0100
  [PATCH v3 8/9] xen/pvh: Enable CPU hotplug Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2017-02-06 18:10 +0100
  [PATCH v3 5/9] xen/pvh: Make sure we don't use ACPI_IRQ_MODEL_PIC for SCI Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2017-02-06 18:10 +0100
    Re: [PATCH v3 5/9] xen/pvh: Make sure we don't use ACPI_IRQ_MODEL_PIC  for SCI Juergen Gross <jgross@suse.com> - 2017-02-07 11:20 +0100
  [PATCH v3 2/9] xen/x86: Remove PVH support Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2017-02-06 18:10 +0100
  [PATCH v3 9/9] xen/pvh: Use Xen's emergency_restart op for PVH guests Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2017-02-06 18:10 +0100
  [PATCH v3 1/9] x86/boot/32: Convert the 32-bit pgtable setup code from assembly to C Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2017-02-06 18:10 +0100
  [PATCH v3 4/9] xen/pvh: Bootstrap PVH guest Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2017-02-06 18:10 +0100
    Re: [Xen-devel] [PATCH v3 4/9] xen/pvh: Bootstrap PVH guest kbuild test robot <lkp@intel.com> - 2017-02-06 20:40 +0100
      Re: [Xen-devel] [PATCH v3 4/9] xen/pvh: Bootstrap PVH guest Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2017-02-06 21:40 +0100
        Re: [Xen-devel] [PATCH v3 4/9] xen/pvh: Bootstrap PVH guest Juergen Gross <jgross@suse.com> - 2017-02-07 11:10 +0100
  Re: [PATCH v3 0/9] PVH v2 support (domU) Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2017-02-07 18:50 +0100

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