From b548a7742791e7818bc2780b2354b9714fd8f8d9 Mon Sep 17 00:00:00 2001 From: Michael Kelley Date: Tue, 2 Mar 2021 13:38:16 -0800 Subject: Drivers: hv: vmbus: Move hyperv_report_panic_msg to arch neutral code With the new Hyper-V MSR set function, hyperv_report_panic_msg() can be architecture neutral, so move it out from under arch/x86 and merge into hv_kmsg_dump(). This move also avoids needing a separate implementation under arch/arm64. No functional change. Signed-off-by: Michael Kelley Reviewed-by: Boqun Feng Link: https://lore.kernel.org/r/1614721102-2241-5-git-send-email-mikelley@microsoft.com Signed-off-by: Wei Liu --- arch/x86/hyperv/hv_init.c | 27 --------------------------- 1 file changed, 27 deletions(-) (limited to 'arch/x86/hyperv/hv_init.c') diff --git a/arch/x86/hyperv/hv_init.c b/arch/x86/hyperv/hv_init.c index 94d52c5cf255..9af4f8a57f36 100644 --- a/arch/x86/hyperv/hv_init.c +++ b/arch/x86/hyperv/hv_init.c @@ -571,33 +571,6 @@ void hyperv_report_panic(struct pt_regs *regs, long err, bool in_die) } EXPORT_SYMBOL_GPL(hyperv_report_panic); -/** - * hyperv_report_panic_msg - report panic message to Hyper-V - * @pa: physical address of the panic page containing the message - * @size: size of the message in the page - */ -void hyperv_report_panic_msg(phys_addr_t pa, size_t size) -{ - /* - * P3 to contain the physical address of the panic page & P4 to - * contain the size of the panic data in that page. Rest of the - * registers are no-op when the NOTIFY_MSG flag is set. - */ - wrmsrl(HV_X64_MSR_CRASH_P0, 0); - wrmsrl(HV_X64_MSR_CRASH_P1, 0); - wrmsrl(HV_X64_MSR_CRASH_P2, 0); - wrmsrl(HV_X64_MSR_CRASH_P3, pa); - wrmsrl(HV_X64_MSR_CRASH_P4, size); - - /* - * Let Hyper-V know there is crash data available along with - * the panic message. - */ - wrmsrl(HV_X64_MSR_CRASH_CTL, - (HV_CRASH_CTL_CRASH_NOTIFY | HV_CRASH_CTL_CRASH_NOTIFY_MSG)); -} -EXPORT_SYMBOL_GPL(hyperv_report_panic_msg); - bool hv_is_hyperv_initialized(void) { union hv_x64_msr_hypercall_contents hypercall_msr; -- cgit