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From:   Thomas Gleixner <tglx@linutronix.de>
To:     Qian Cai <cai@lca.pw>
Cc:     Peter Zijlstra <peterz@infradead.org>,
        LKML <linux-kernel@vger.kernel.org>,
        Andy Lutomirski <luto@kernel.org>,
        Andrew Cooper <andrew.cooper3@citrix.com>,
        X86 ML <x86@kernel.org>,
        "Paul E. McKenney" <paulmck@kernel.org>,
        Alexandre Chartre <alexandre.chartre@oracle.com>,
        Frederic Weisbecker <frederic@kernel.org>,
        Paolo Bonzini <pbonzini@redhat.com>,
        Sean Christopherson <sean.j.christopherson@intel.com>,
        Masami Hiramatsu <mhiramat@kernel.org>,
        Petr Mladek <pmladek@suse.com>,
        Steven Rostedt <rostedt@goodmis.org>,
        Joel Fernandes <joel@joelfernandes.org>,
        Boris Ostrovsky <boris.ostrovsky@oracle.com>,
        Juergen Gross <jgross@suse.com>,
        Brian Gerst <brgerst@gmail.com>,
        Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
        Josh Poimboeuf <jpoimboe@redhat.com>,
        Will Deacon <will@kernel.org>,
        Tom Lendacky <thomas.lendacky@amd.com>,
        Wei Liu <wei.liu@kernel.org>,
        Michael Kelley <mikelley@microsoft.com>,
        Jason Chen CJ <jason.cj.chen@intel.com>,
        Zhao Yakui <yakui.zhao@intel.com>,
        Alexander Potapenko <glider@google.com>
Subject: Re: [patch V9 10/39] x86/entry: Provide helpers for execute on irqstack
In-Reply-To: <20200613214123.GC992@lca.pw>
References: <87zh9cnfmg.fsf@nanos.tec.linutronix.de> <87wo4gnetx.fsf@nanos.tec.linutronix.de> <20200610123833.GD954@lca.pw> <87h7vig17z.fsf@nanos.tec.linutronix.de> <20200613135547.GA992@lca.pw> <87a717cbc9.fsf@nanos.tec.linutronix.de> <20200613214123.GC992@lca.pw>
Date:   Sun, 14 Jun 2020 10:59:30 +0200
Message-ID: <874krec9al.fsf@nanos.tec.linutronix.de>
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Sender: linux-kernel-owner@vger.kernel.org
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Qian Cai <cai@lca.pw> writes:
> On Sat, Jun 13, 2020 at 04:03:02PM +0200, Thomas Gleixner wrote:
>> Qian,
>> 
>> Qian Cai <cai@lca.pw> writes:
>> > On Wed, Jun 10, 2020 at 09:38:56PM +0200, Thomas Gleixner wrote:
>> >
>> > Thomas, I get ahold of one of the affected systems now if you want some
>> > testing there.
>> 
>>   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86/entry
>
> Looks good.
>
> <start>
> # cat /sys/kernel/debug/stackdepot/info
> Unique stacks: 27481
> Depot index:   285
> Depot offset:  3024
>
> <after oom02>
> # cat /sys/kernel/debug/stackdepot/info
> Unique stacks: 29242
> Depot index:   308
> Depot offset:  6608
>
> <after the full testsuite>
> # cat /sys/kernel/debug/stackdepot/info
> Unique stacks: 49221
> Depot index:   530
> Depot offset:  5888

Thanks for confirming!