On 03/10/2013 07:13 PM, HATAYAMA Daisuke wrote:
>
> It seems to me that at least there needs to be the following design
> policy for multiple CPUs on the 2nd kenrel:
>
> - There's no firmware, kernel components and modules that depend on
> BSP flag being kept set on the original BSP flag and ne
From: HATAYAMA Daisuke
Subject: Re: [PATCH v1 2/2] x86, apic: Disable BSP if boot cpu is AP
Date: Mon, 11 Mar 2013 10:07:21 +0900
> From: "Eric W. Biederman"
> Subject: Re: [PATCH v1 2/2] x86, apic: Disable BSP if boot cpu is AP
> Date: Thu, 25 Oct 2012 21:13:25 -0700
>
From: "Eric W. Biederman"
Subject: Re: [PATCH v1 2/2] x86, apic: Disable BSP if boot cpu is AP
Date: Thu, 25 Oct 2012 21:13:25 -0700
> HATAYAMA Daisuke writes:
>
>> From: "H. Peter Anvin"
>> Subject: Re: [PATCH v1 2/2] x86, apic: Disable BSP if boot cpu
HATAYAMA Daisuke writes:
> From: "H. Peter Anvin"
> Subject: Re: [PATCH v1 2/2] x86, apic: Disable BSP if boot cpu is AP
> Date: Mon, 22 Oct 2012 17:35:47 -0700
>
>> On 10/22/2012 02:29 PM, Eric W. Biederman wrote:
>>>>
>>>> As I s
From: "H. Peter Anvin"
Subject: Re: [PATCH v1 2/2] x86, apic: Disable BSP if boot cpu is AP
Date: Mon, 22 Oct 2012 17:35:47 -0700
> On 10/22/2012 02:29 PM, Eric W. Biederman wrote:
>>>
>>> As I said, I thought Fenghua tried that but it didn't work,
>>
On 10/22/2012 02:29 PM, Eric W. Biederman wrote:
As I said, I thought Fenghua tried that but it didn't work, experimentally.
Fair enough. You described the problem with clearing bit 8 in a weird
way.
If the best we can muster are fuzzy memories it may be worth revisiting.
Perhaps it works on
"H. Peter Anvin" writes:
> On 10/22/2012 01:43 PM, Eric W. Biederman wrote:
>>
>> The reason the BIOSen go wonky is the INIT cause the cpu to go to the
>> reset vector at 4G-16 bytes. So it is very much expected that the
>> BIOSen start acting like you just came out of reset.
>>
>> If you can
On 10/22/2012 01:43 PM, Eric W. Biederman wrote:
>
> The reason the BIOSen go wonky is the INIT cause the cpu to go to the
> reset vector at 4G-16 bytes. So it is very much expected that the
> BIOSen start acting like you just came out of reset.
>
> If you can clear bit 8 of IA32_APIC_BASE_MSR a
"H. Peter Anvin" writes:
> On 10/22/2012 01:31 PM, Eric W. Biederman wrote:
>>>
>>> IIRC Fenghua experimented with that and it didn't work. Not all BIOSes
>>> use that bit to determine BSP-ness.
>>
>> What does a BIOS have to do with anything?
>>
>> The practical issue here is does an INIT IPI
On 10/22/2012 01:33 PM, H. Peter Anvin wrote:
> On 10/22/2012 01:31 PM, Eric W. Biederman wrote:
>>>
>>> IIRC Fenghua experimented with that and it didn't work. Not all BIOSes
>>> use that bit to determine BSP-ness.
>>
>> What does a BIOS have to do with anything?
>>
>> The practical issue here is
On 10/22/2012 01:31 PM, Eric W. Biederman wrote:
>>
>> IIRC Fenghua experimented with that and it didn't work. Not all BIOSes
>> use that bit to determine BSP-ness.
>
> What does a BIOS have to do with anything?
>
> The practical issue here is does an INIT IPI cause the cpu to go into
> startup-
"H. Peter Anvin" writes:
> On 10/22/2012 01:04 PM, Eric W. Biederman wrote:
>> HATAYAMA Daisuke writes:
>>
>>> We disable BSP if boot cpu is AP.
>>>
>>> INIT-INIT-SIPI sequence, a protocal to initiate AP, cannot be used for
>>> BSP since it causes BSP jump to BIOS init code; typical visible
>>>
On 10/22/2012 01:04 PM, Eric W. Biederman wrote:
> HATAYAMA Daisuke writes:
>
>> We disable BSP if boot cpu is AP.
>>
>> INIT-INIT-SIPI sequence, a protocal to initiate AP, cannot be used for
>> BSP since it causes BSP jump to BIOS init code; typical visible
>> behaviour is hang or immediate rese
HATAYAMA Daisuke writes:
> We disable BSP if boot cpu is AP.
>
> INIT-INIT-SIPI sequence, a protocal to initiate AP, cannot be used for
> BSP since it causes BSP jump to BIOS init code; typical visible
> behaviour is hang or immediate reset, depending on the BIOS init code.
>
> INIT can be used t
We disable BSP if boot cpu is AP.
INIT-INIT-SIPI sequence, a protocal to initiate AP, cannot be used for
BSP since it causes BSP jump to BIOS init code; typical visible
behaviour is hang or immediate reset, depending on the BIOS init code.
INIT can be used to reset AP in a fatal system error stat
15 matches
Mail list logo
