Date: Fri, 27 Feb 2009 19:26:25 +0300 From: Igor Sysoev <is@rambler-co.ru> To: John Baldwin <jhb@freebsd.org> Cc: freebsd-stable@freebsd.org Subject: Re: 7.1-STABLE does not boot after recent superpage support MFC Message-ID: <20090227162625.GO51952@rambler-co.ru> In-Reply-To: <200902271026.15796.jhb@freebsd.org> References: <20090227130830.GI51952@rambler-co.ru> <200902271026.15796.jhb@freebsd.org>
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On Fri, Feb 27, 2009 at 10:26:15AM -0500, John Baldwin wrote: > On Friday 27 February 2009 8:08:30 am Igor Sysoev wrote: > > Is anyone able to boot kernel with recently merged superpage support ? > > I have csup'd world to > > *default date=2009.02.26.23.59.59 > > then rebuild world and kernel does not boot: > > > > FreeBSD 7.1-STABLE #4: Fri Feb 27 11:59:13 MSK 2009 > > XXXXXXXXXXXXXXXXXXXXX > > kernel trap 12 with interrupts disabled > > > > > > Fatal trap 12: page fault while in kernel mode > > cpuid = 0; apic id = 00 > > fault virtual address = 0x0 > > fault code = supervisor read data, page not present > > instruction pointer = 0x8:0xffffffff803b1d80 > > stack pointer = 0x10:0xffffffff80686ce0 > > frame pointer = 0x10:0xffffffff80686d00 > > code segment = base 0x0, limit 0xfffff, type 0x1b > > = DPL 0, pres 1, long 1, def32 0, gran 1 > > processor eflags = resume, IOPL = 0 > > current process = 0 () > > trap number = 12 > > panic: page fault > > cpuid = 0 > > > > And the message is cycled. The kernel does not boot despite > > vm.pmap.pg_ps_enabled value. > > This should now be fixed, apologies for the breakage. :( Thank you, your commit has fixed the bug. Now I have $sysctl vm.pmap.pde vm.pmap.pde.promotions: 518 vm.pmap.pde.p_failures: 4534 vm.pmap.pde.mappings: 0 vm.pmap.pde.demotions: 423 Does this mean that (518 - 423) * 2 = 190M are mapped via 2M pages ? -- Igor Sysoev http://sysoev.ru/en/
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