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Drivers: hv: vmbus: Move the crash notification function

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As part of the effort to separate out architecture specific code, move the
crash notification function.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
K. Y. Srinivasan
2017-01-19 11:51:48 -07:00
committed by Greg Kroah-Hartman
parent 8de8af7e08
commit d058fa7e98
5 changed files with 35 additions and 35 deletions
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26
arch/x86/hyperv/hv_init.c
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@@ -209,3 +209,29 @@ u64 hv_do_hypercall(u64 control, void *input, void *output)
#endif /* !x86_64 */
}
EXPORT_SYMBOL_GPL(hv_do_hypercall);
void hyperv_report_panic(struct pt_regs *regs)
{
static bool panic_reported;
/*
* We prefer to report panic on 'die' chain as we have proper
* registers to report, but if we miss it (e.g. on BUG()) we need
* to report it on 'panic'.
*/
if (panic_reported)
return;
panic_reported = true;
wrmsrl(HV_X64_MSR_CRASH_P0, regs->ip);
wrmsrl(HV_X64_MSR_CRASH_P1, regs->ax);
wrmsrl(HV_X64_MSR_CRASH_P2, regs->bx);
wrmsrl(HV_X64_MSR_CRASH_P3, regs->cx);
wrmsrl(HV_X64_MSR_CRASH_P4, regs->dx);
/*
* Let Hyper-V know there is crash data available
*/
wrmsrl(HV_X64_MSR_CRASH_CTL, HV_CRASH_CTL_CRASH_NOTIFY);
}
EXPORT_SYMBOL_GPL(hyperv_report_panic);