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Groups > linux.kernel > #1276644
| From | Mikulas Patocka <mpatocka@redhat.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [GIT PULL] parisc huge page support for v4.4 |
| Date | 2015-11-24 17:50 +0100 |
| Message-ID | <qyoX0-2d3-21@gated-at.bofh.it> (permalink) |
| References | <qxBtg-3ej-13@gated-at.bofh.it> <qyoaC-1F0-11@gated-at.bofh.it> <qyoaC-1F0-9@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Tue, 24 Nov 2015, Helge Deller wrote: > > Hi > > > > Since the kernel 4.4-rc2 I'm getting frequent boot failures on PA-RISC. > > When I revert this patchset, the crashes are gone. > > > [ 3.296666] CPU(s): 4 out of 4 PA8900 (Shortfin) at 1000.000000 MHz online > > Hi Mikulas, > > Yes, I've seen this as well. > It affects only the PA8900 CPUs, while all PA8500-PA8700 machines seem to work fine. > I do have a temporary 3-line patch to avoid the crashes which I'll push to my tree shortly. > I'm still investigating why it only affects the PA8900 CPUs, but I assume > it's related to the cache aliasing of those CPUs. > I'll keep you updated. > > Helge The PA-RISC specification doesn't allow aliasing on non-equaivalent addresses. Can the kernel map a piece of kernel data to other virtual address? If yes, we can't use big pages to map kernel data. Mikulas -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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[GIT PULL] parisc huge page support for v4.4 Helge Deller <deller@gmx.de> - 2015-11-22 13:00 +0100
Re: [GIT PULL] parisc huge page support for v4.4 Helge Deller <deller@gmx.de> - 2015-11-24 17:00 +0100
Re: [GIT PULL] parisc huge page support for v4.4 Mikulas Patocka <mpatocka@redhat.com> - 2015-11-24 17:50 +0100
Re: [GIT PULL] parisc huge page support for v4.4 Helge Deller <deller@gmx.de> - 2015-11-24 18:10 +0100
Re: [GIT PULL] parisc huge page support for v4.4 Mikulas Patocka <mpatocka@redhat.com> - 2015-11-24 19:50 +0100
Re: [GIT PULL] parisc huge page support for v4.4 Mikulas Patocka <mpatocka@redhat.com> - 2015-11-24 17:00 +0100
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