diff options
author | Michael Kelley <mikelley@microsoft.com> | 2021-03-02 13:38:16 -0800 |
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committer | Wei Liu <wei.liu@kernel.org> | 2021-03-08 17:32:59 +0000 |
commit | b548a7742791e7818bc2780b2354b9714fd8f8d9 (patch) | |
tree | 6ff98b3df7d860d83f98e6155748bbfd915eed3b /arch/x86/hyperv | |
parent | f3c5e63c3690fc64e5a7a2b3e4f9f5ff1fa25584 (diff) | |
download | linux-b548a7742791e7818bc2780b2354b9714fd8f8d9.tar.bz2 |
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 <mikelley@microsoft.com>
Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://lore.kernel.org/r/1614721102-2241-5-git-send-email-mikelley@microsoft.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Diffstat (limited to 'arch/x86/hyperv')
-rw-r--r-- | arch/x86/hyperv/hv_init.c | 27 |
1 files changed, 0 insertions, 27 deletions
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; |