29 messages in org.freebsd.freebsd-currentRe: Fresh installed Freebsd 9 don't b...| From | Sent On | Attachments |
|---|---|---|
| Pavel Timofeev | Oct 20, 2011 12:27 am | |
| Dennis Koegel | Oct 21, 2011 1:58 am | |
| Pavel Timofeev | Oct 21, 2011 2:44 am | |
| Lars Engels | Oct 21, 2011 4:08 am | |
| Pavel Timofeev | Oct 21, 2011 4:12 am | |
| Gunnar Schaefer | Oct 21, 2011 12:19 pm | |
| John Baldwin | Oct 21, 2011 1:33 pm | |
| Andriy Gapon | Oct 21, 2011 2:27 pm | |
| Andriy Gapon | Oct 21, 2011 2:36 pm | |
| Gunnar Schaefer | Oct 21, 2011 3:22 pm | |
| Andriy Gapon | Oct 23, 2011 5:50 am | |
| Dennis Koegel | Oct 23, 2011 8:27 am | |
| Andriy Gapon | Oct 23, 2011 10:57 am | |
| Dennis Koegel | Oct 23, 2011 12:55 pm | |
| Dimitry Andric | Oct 23, 2011 1:08 pm | |
| John Baldwin | Oct 24, 2011 5:18 am | |
| John Baldwin | Oct 24, 2011 6:40 am | |
| Andriy Gapon | Oct 24, 2011 6:47 am | |
| John Baldwin | Oct 24, 2011 8:33 am | |
| Andriy Gapon | Oct 24, 2011 9:24 am | |
| John Baldwin | Oct 24, 2011 11:23 am | |
| Dennis Koegel | Oct 24, 2011 2:39 pm | |
| Gunnar Schaefer | Oct 24, 2011 4:20 pm | |
| Pavel Timofeev | Oct 25, 2011 12:13 am | |
| Andriy Gapon | Oct 25, 2011 4:26 am | |
| John Baldwin | Oct 25, 2011 12:55 pm | |
| Pavel Timofeev | Nov 8, 2011 11:10 am | |
| John Baldwin | Nov 8, 2011 11:31 am | |
| Pavel Timofeev | Nov 9, 2011 10:48 pm |
| Subject: | Re: Fresh installed Freebsd 9 don't boot from hd | |
|---|---|---|
| From: | Dennis Koegel (dk...@neveragain.de) | |
| Date: | Oct 23, 2011 8:27:26 am | |
| List: | org.freebsd.freebsd-current | |
On Fri, Oct 21, 2011 at 04:33:38PM -0400, John Baldwin wrote:
Working offline with Dennis, we found that changing the CFLAGS in sys/boot/i386/gptboot/Makefile from "-O1" to "-Os -mrtd" (partially reverting an earlier commit) fixed gptboot. The next test for someone to do would be to try just adding "-mrtd" and leaving "-O1" as-is to see if that fixes it.
More test results:
gcc -Os -fno-guess-branch-probability -fomit-frame-pointer -fno-unit-at-a-time \ -mno-align-long-strings -mrtd [from before r225530]: Boots OK gcc -Os -mrtd: Boots OK gcc -O1 -mrtd: Fails gcc -O1: Fails gcc -O0: Fails gcc -Os: Boots OK
clang -O1: Fails clang -Os: Fails clang -Oz: Fails
I've put some printf()s into gpt{,boot}.c to trace where the reboot is triggered. It appears to be in drvsize() (called from gptread()). OTOH the debug output may have changed where the problem occurs, I don't know about that.
With 9.0R drawing near, CFLAGS should be s/-O1/-Os/, until we can figure out what happens. But as for why gcc's magic -Os is required and clang's output doesn't work at all, I'm clueless.
- D.
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