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From: Peter Zijlstra <peterz@infradead.org>
To: Andy Lutomirski <luto@amacapital.net>
Cc: Jan Kara <jack@suse.cz>, KVM list <kvm@vger.kernel.org>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	X86 ML <x86@kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Petr Mladek <pmladek@suse.cz>,
	xen-devel <Xen-devel@lists.xen.org>,
	Borislav Petkov <bp@alien8.de>,
	Paolo Bonzini <pbonzini@redhat.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Arjan van de Ven <arjan@linux.intel.com>
Subject: Re: [PATCH v5 3/9] x86/head: Move early exception panic code into early_fixup_exception
Date: Mon, 4 Apr 2016 18:00:42 +0200	[thread overview]
Message-ID: <20160404160042.GB3448__34242.8495329388$1459785722$gmane$org@twins.programming.kicks-ass.net> (raw)
In-Reply-To: <CALCETrVriftUPNZ8pCQ1x9TWDHnRx8fWUvJgCQToPEOxqMLb3w@mail.gmail.com>

On Mon, Apr 04, 2016 at 08:32:21AM -0700, Andy Lutomirski wrote:

> Adding locking would be easy enough, wouldn't it?

See patch in this thread..

> But do any platforms really boot a second CPU before switching to real
> printk? 

I _only_ use early_printk() as printk() is a quagmire of fail :-)

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  parent reply	other threads:[~2016-04-04 16:00 UTC|newest]

Thread overview: 47+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <cover.1459605520.git.luto@kernel.org>
2016-04-02 14:01 ` [PATCH v5 1/9] x86/head: Pass a real pt_regs and trapnr to early_fixup_exception Andy Lutomirski
2016-04-13 11:43   ` [tip:x86/asm] x86/head: Pass a real pt_regs and trapnr to early_fixup_exception() tip-bot for Andy Lutomirski
2016-04-02 14:01 ` [PATCH v5 2/9] x86/head: Move the early NMI fixup into C Andy Lutomirski
2016-04-02 14:01 ` [PATCH v5 3/9] x86/head: Move early exception panic code into early_fixup_exception Andy Lutomirski
2016-04-02 18:39   ` Borislav Petkov
     [not found]   ` <20160402183919.GA2538@pd.tnic>
2016-04-02 20:13     ` Andy Lutomirski
     [not found]     ` <CALCETrUJVDpzNQMsY=_jWNOMer+TdW2p4wES4OBCfYU7gq3fbg@mail.gmail.com>
2016-04-02 20:47       ` Borislav Petkov
     [not found]       ` <20160402204752.GC2538@pd.tnic>
2016-04-02 20:58         ` Andy Lutomirski
     [not found]         ` <CALCETrXHR3T3PJwOWRFHTMK5WjhDyTJfaJtkiHd+g7evnqp54A@mail.gmail.com>
2016-04-04 11:52           ` Jan Kara
     [not found]           ` <20160404115206.GG8372@quack.suse.cz>
2016-04-04 12:46             ` Peter Zijlstra
2016-04-04 15:32             ` Andy Lutomirski
     [not found]             ` <CALCETrVriftUPNZ8pCQ1x9TWDHnRx8fWUvJgCQToPEOxqMLb3w@mail.gmail.com>
2016-04-04 15:36               ` Arjan van de Ven
2016-04-04 16:00               ` Peter Zijlstra [this message]
     [not found]               ` <20160404160042.GB3448@twins.programming.kicks-ass.net>
2016-04-04 19:38                 ` Borislav Petkov
     [not found]                 ` <20160404193803.GK351@pd.tnic>
2016-04-04 21:31                   ` Andy Lutomirski
     [not found]                   ` <CALCETrVvFTrK1pVmjnfWwwq+5P6+1ghMjh4Wwqm05d=00ejYSw@mail.gmail.com>
2016-04-04 21:40                     ` Borislav Petkov
2016-04-13 11:44   ` [tip:x86/asm] x86/head: Move early exception panic code into early_fixup_exception() tip-bot for Andy Lutomirski
2016-04-02 14:01 ` [PATCH v5 4/9] x86/traps: Enable all exception handler callbacks early Andy Lutomirski
2016-04-02 14:01 ` [PATCH v5 5/9] x86/paravirt: Add _safe to the read_msr and write_msr PV hooks Andy Lutomirski
2016-04-03  8:41   ` Borislav Petkov
     [not found]   ` <20160403084129.GB19007@pd.tnic>
2016-04-03 13:23     ` Andy Lutomirski
     [not found]     ` <CALCETrUcqTx00pKYEt49QSKKBKVEx-Uv0D6dzE1-Em6Q-wkSpQ@mail.gmail.com>
2016-04-03 14:07       ` Borislav Petkov
2016-04-13 11:44   ` [tip:x86/asm] x86/paravirt: Add _safe to the read_ms()r and write_msr() PV callbacks tip-bot for Andy Lutomirski
2016-04-02 14:01 ` [PATCH v5 6/9] x86/msr: Carry on after a non-"safe" MSR access fails Andy Lutomirski
2016-04-02 14:01 ` [PATCH v5 7/9] x86/paravirt: Add paravirt_{read, write}_msr Andy Lutomirski
2016-04-02 14:01 ` [PATCH v5 8/9] x86/paravirt: Make "unsafe" MSR accesses unsafe even if PARAVIRT=y Andy Lutomirski
2016-04-13 11:46   ` [tip:x86/asm] " tip-bot for Andy Lutomirski
2016-04-02 14:01 ` [PATCH v5 9/9] x86/msr: Set the return value to zero when native_rdmsr_safe fails Andy Lutomirski
2016-04-02 14:24 ` [PATCH v5 0/9] Improve non-"safe" MSR access failure handling Linus Torvalds
     [not found] ` <CA+55aFwi2E0A9e7krCG9dkTq7vMZnxsBwtF6_hw6QO0EVObf=g@mail.gmail.com>
2016-04-02 15:13   ` Andy Lutomirski
     [not found]   ` <CALCETrWP33SR5TCA-baZi8xBrHpWe=wzkuvUM=y4x_MPt1XgYg@mail.gmail.com>
2016-04-02 15:21     ` Linus Torvalds
2016-04-04 16:23 ` Borislav Petkov
     [not found] ` <880eebc5dcd2ad9f310d41345f82061ea500e9fa.1459605520.git.luto@kernel.org>
2016-04-04 16:33   ` [PATCH v5 7/9] x86/paravirt: Add paravirt_{read, write}_msr David Vrabel
     [not found]   ` <5702974A.1030003@citrix.com>
2016-04-04 16:40     ` Andy Lutomirski
2016-04-13 11:45   ` [tip:x86/asm] x86/paravirt: Add paravirt_{read, write}_msr() tip-bot for Andy Lutomirski
2016-04-05 15:38 ` [PATCH v5 0/9] Improve non-"safe" MSR access failure handling Boris Ostrovsky
     [not found] ` <20fc047d926150cb08cb9b9f2923519b07ec1a15.1459605520.git.luto@kernel.org>
2016-04-02 18:52   ` [PATCH v5 4/9] x86/traps: Enable all exception handler callbacks early Borislav Petkov
     [not found]   ` <20160402185227.GB2538@pd.tnic>
2016-04-02 20:16     ` Andy Lutomirski
     [not found]     ` <CALCETrV7PxgmhU_yXjJSugY88T8Do=vBDuG54fOFSyLp7nGcJA@mail.gmail.com>
2016-04-02 20:52       ` Borislav Petkov
     [not found]       ` <20160402205248.GD2538@pd.tnic>
2016-04-03  8:07         ` Borislav Petkov
     [not found]         ` <20160403080737.GA19007@pd.tnic>
2016-04-03 13:22           ` Andy Lutomirski
2016-04-03 13:51           ` Linus Torvalds
     [not found]           ` <CA+55aFw19X7PO2xd1PpUav1rSyCqUqWgi9+SA7TgjaWMaxexHQ@mail.gmail.com>
2016-04-03 13:55             ` Andy Lutomirski
     [not found]             ` <CALCETrX_x+tV4m3SwgCfXg9y5gia8eMhhTdUnHuXpXhnULkHRw@mail.gmail.com>
2016-04-03 14:10               ` Borislav Petkov
2016-04-03 14:17               ` Linus Torvalds
     [not found]               ` <20160403141041.GE19007@pd.tnic>
2016-04-04 15:47                 ` Andy Lutomirski
2016-04-13 11:44   ` [tip:x86/asm] " tip-bot for Andy Lutomirski

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