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Drivers: hv: restore hypervcall page cleanup before kexec

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We need to cleanup the hypercall page before doing kexec/kdump or the new
kernel may crash if it tries to use it. Reuse the now-empty hv_cleanup
function renaming it to hyperv_cleanup and moving to the arch specific
code.

Fixes: 8730046c14 ("Drivers: hv vmbus: Move Hypercall page setup out of common code")
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Vitaly Kuznetsov
2017-01-28 12:37:14 -07:00
committed by Greg Kroah-Hartman
parent 17244623a4
commit d6f3609d2b
5 changed files with 20 additions and 19 deletions
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arch/x86/include/asm/mshyperv.h
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@@ -171,5 +171,6 @@ void hv_remove_crash_handler(void);
void hyperv_init(void);
void hyperv_report_panic(struct pt_regs *regs);
bool hv_is_hypercall_page_setup(void);
void hyperv_cleanup(void);
#endif
#endif