From: Zachary Amsden <zach@vmware.com>
To: Pavel Machek <pavel@ucw.cz>
Cc: Chris Wright <chrisw@sous-sol.org>,
akpm@osdl.org, ak@muc.de, Rusty Russell <rusty@rustcorp.com.au>,
Jeremy Fitzhardinge <jeremy@goop.org>,
linux-kernel@vger.kernel.org, virtualization@lists.osdl.org
Subject: Re: [PATCH 4/7] Allow selected bug checks to be skipped by paravirt kernels
Date: Wed, 01 Nov 2006 15:24:44 -0800 [thread overview]
Message-ID: <45492CBC.8020501@vmware.com> (raw)
In-Reply-To: <20061101121753.GA2205@elf.ucw.cz>
Pavel Machek wrote:
> On Sat 2006-10-28 00:00:04, Chris Wright wrote:
>
>> Allow selected bug checks to be skipped by paravirt kernels. The two most
>> important are the F00F workaround (which is either done by the hypervisor,
>> or not required), and the 'hlt' instruction check, which can break under
>> some hypervisors.
>>
>
> How can hlt check break? It is hlt;hlt;hlt, IIRC, that looks fairly
> innocent to me.
>
Not if you use tickless timers that don't generate interrupts to unhalt
you, or if you delay ticks until the next scheduled timeout and you
haven't yet scheduled any timeout. Both are likely in a hypervisor.
Zach
next prev parent reply other threads:[~2006-11-01 23:24 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-29 2:45 [PATCH 0/7] x86 paravirtualization infrastructure Chris Wright
2006-10-28 7:00 ` [PATCH 1/7] header and stubs for paravirtualizing critical operations Chris Wright
2006-10-29 16:40 ` Andi Kleen
2006-10-28 7:00 ` [PATCH 2/7] Patch inline replacements for common paravirt operations Chris Wright
2006-10-28 7:00 ` [PATCH 3/7] More generic paravirtualization entry point Chris Wright
2006-10-29 16:41 ` Andi Kleen
2006-10-28 7:00 ` [PATCH 4/7] Allow selected bug checks to be skipped by paravirt kernels Chris Wright
2006-11-01 12:17 ` Pavel Machek
2006-11-01 22:40 ` Dave Jones
2006-11-01 23:24 ` Zachary Amsden [this message]
2006-11-02 10:20 ` Pavel Machek
2006-11-02 11:04 ` Zachary Amsden
2006-10-28 7:00 ` [PATCH 5/7] Allow disabling legacy power management modes with " Chris Wright
2006-10-28 7:00 ` [PATCH 6/7] Add APIC accessors to paravirt-ops Chris Wright
2006-10-29 16:31 ` Andi Kleen
2006-10-30 3:28 ` Rusty Russell
2006-10-30 23:11 ` Andi Kleen
2006-10-30 23:42 ` Chris Wright
2006-10-30 23:46 ` Andi Kleen
2006-10-30 23:55 ` Chris Wright
2006-10-31 1:45 ` Rusty Russell
2006-11-01 10:25 ` Rusty Russell
2006-11-01 10:27 ` [PATCH 1/7] paravirtualization: header and stubs for paravirtualizing critical operations Rusty Russell
2006-11-01 10:28 ` [PATCH 2/7] paravirtualization: Patch inline replacements for common paravirt operations Rusty Russell
2006-11-01 10:29 ` [PATCH 3/7] paravirtualization: More generic paravirtualization entry point Rusty Russell
2006-11-01 10:30 ` [PATCH 4/7] paravirtualization: Allow selected bug checks to be skipped by paravirt kernels Rusty Russell
2006-11-01 10:31 ` [PATCH 5/7] paravirtualization: Allow disabling legacy power management modes with " Rusty Russell
2006-11-01 10:32 ` [PATCH 6/7] paravirtualization: Add APIC accessors to paravirt-ops Rusty Russell
2006-11-01 10:34 ` [PATCH 7/7] paravirtualization: Add mmu virtualization " Rusty Russell
2006-11-01 23:31 ` [PATCH 6/7] paravirtualization: Add APIC accessors " Andrew Morton
2006-11-02 0:46 ` Rusty Russell
2006-11-01 23:29 ` [PATCH 4/7] paravirtualization: Allow selected bug checks to be skipped by paravirt kernels Andrew Morton
2006-11-01 23:58 ` Jeremy Fitzhardinge
2006-11-02 0:01 ` Rusty Russell
2006-11-01 23:27 ` [PATCH 2/7] paravirtualization: Patch inline replacements for common paravirt operations Andrew Morton
2006-11-02 0:47 ` Rusty Russell
2006-11-02 0:54 ` Zachary Amsden
2006-11-01 10:45 ` [PATCH 1/7] paravirtualization: header and stubs for paravirtualizing critical operations Arjan van de Ven
2006-11-01 17:27 ` Andi Kleen
2006-11-01 23:32 ` Rusty Russell
2006-11-02 7:13 ` Andrew Morton
2006-11-02 7:44 ` Oleg Verych
2006-11-03 2:56 ` Andi Kleen
2006-11-03 20:35 ` Zachary Amsden
2006-11-03 21:09 ` Andi Kleen
2006-11-05 4:43 ` Rusty Russell
2006-11-05 4:59 ` Zachary Amsden
2006-11-05 5:08 ` Rusty Russell
2006-11-05 5:46 ` Andi Kleen
2006-11-05 6:18 ` Andrew Morton
2006-11-05 6:21 ` Rusty Russell
2006-11-05 6:57 ` Andi Kleen
2006-11-18 2:08 ` john stultz
2006-10-28 7:00 ` [PATCH 7/7] Add mmu virtualization to paravirt-ops Chris Wright
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