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Message-ID: <87mu5tpnlf.fsf@nanos.tec.linutronix.de>
Date: Wed, 27 May 2020 14:30:04 +0200
From: Thomas Gleixner <tglx@...utronix.de>
To: Wei Liu <wei.liu@...nel.org>, Boqun Feng <boqun.feng@...il.com>
Cc: LKML <linux-kernel@...r.kernel.org>,
Andy Lutomirski <luto@...nel.org>,
Andrew Cooper <andrew.cooper3@...rix.com>,
X86 ML <x86@...nel.org>,
"Paul E. McKenney" <paulmck@...nel.org>,
Alexandre Chartre <alexandre.chartre@...cle.com>,
Frederic Weisbecker <frederic@...nel.org>,
Paolo Bonzini <pbonzini@...hat.com>,
Sean Christopherson <sean.j.christopherson@...el.com>,
Masami Hiramatsu <mhiramat@...nel.org>,
Petr Mladek <pmladek@...e.com>,
Steven Rostedt <rostedt@...dmis.org>,
Joel Fernandes <joel@...lfernandes.org>,
Boris Ostrovsky <boris.ostrovsky@...cle.com>,
Juergen Gross <jgross@...e.com>,
Brian Gerst <brgerst@...il.com>,
Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
Josh Poimboeuf <jpoimboe@...hat.com>,
Will Deacon <will@...nel.org>,
Tom Lendacky <thomas.lendacky@....com>,
Wei Liu <wei.liu@...nel.org>,
Michael Kelley <mikelley@...rosoft.com>,
Jason Chen CJ <jason.cj.chen@...el.com>,
Zhao Yakui <yakui.zhao@...el.com>,
"Peter Zijlstra \(Intel\)" <peterz@...radead.org>
Subject: Re: [patch V9 30/39] x86/entry: Convert various hypervisor vectors to IDTENTRY_SYSVEC
Wei Liu <wei.liu@...nel.org> writes:
> On Wed, May 27, 2020 at 09:46:16AM +0800, Boqun Feng wrote:
> VMBus is being loaded. That gives me some clue.
>
> I notice a hunk in the patch:
>
> @@ -331,17 +327,19 @@ static void __init ms_hyperv_init_platfo
> x86_platform.apic_post_init = hyperv_init;
> hyperv_setup_mmu_ops();
> /* Setup the IDT for hypervisor callback */
> - alloc_intr_gate(HYPERVISOR_CALLBACK_VECTOR, hyperv_callback_vector);
> + alloc_intr_gate(HYPERVISOR_CALLBACK_VECTOR, sysvec_hyperv_callback);
>
> It is not using the asm variant.
>
> Could this be the culprit? Thomas?
Of course ... Sorry
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