Date: Thu, 18 Aug 2011 19:49:18 +0200 From: Christoph Hoffmann <christoph_hoffmann@me.com> To: John Baldwin <jhb@freebsd.org> Cc: freebsd-current@freebsd.org Subject: Re: gptzfsboot error using HP Smart Array P410i Controller Message-ID: <E4144408-8FE7-4FC6-B394-06B2072AC824@me.com> In-Reply-To: <201108181310.10920.jhb@freebsd.org> References: <E040B3A9-9B62-4545-ADC9-5CE3A9217024@me.com> <201108161515.50127.jhb@freebsd.org> <23B6937F-F261-4DC4-9168-96720251C98D@me.com> <201108181310.10920.jhb@freebsd.org>
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John,
Unfortunately not, as we is still need 4 additional instructions or some sort of memory
barrier [ like mb() in Tru64 :) ] .
Regards,
Christoph
--
Christoph Hoffmann
On Aug 18, 2011, at 7:10 PM, John Baldwin wrote:
> On Thursday, August 18, 2011 12:30:24 pm Christoph Hoffmann wrote:
>> Hello John,
>>
>> Thank you very much indeed for the hints.
>>
>> I am under the impression that we are facing a problem with synchronisation
>> of CPU local caches. I also wasn't able to find any problem with memory
>> allocation.
>>
>> This box is equipped with:
>>
>> 1 Processor(s) detected, 4 total cores enabled, Hyperthreading is enabled
>> Proc 1: Intel(R) Xeon(R) CPU E5630 @ 2.53GHz
>> QPI Speed: 5.8 GT/s
>>
>> Changing the order of execution in zfsboot.c main() function to
>>
>> […]
>> int
>> main(void)
>> {
>> […]
>> bios_getmem();
>>
>> if (high_heap_size > 0) {
>> […]
>> bootinfo.bi_version = BOOTINFO_VERSION;
>> bootinfo.bi_size = sizeof(bootinfo);
>> bootinfo.bi_basemem = bios_basemem / 1024;
>> bootinfo.bi_extmem = bios_extmem / 1024;
>> bootinfo.bi_memsizes_valid++;
>> /* bootinfo.bi_bios_dev = dsk->drive; */
>> bootinfo.bi_bios_dev = *(uint8_t *)PTOV(ARGS);
>
> What if you leave the order as-is but just change this one line to use
> PTOV(ARGS) directly here instead of 'dsk->drive'?
>
> --
> John Baldwin
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