From: Andrew Morton <firstname.lastname@example.org> To: email@example.com Cc: firstname.lastname@example.org, email@example.com Subject: Re: [Bug 204789] New: Boot failure with more than 256G of memory Date: Wed, 11 Sep 2019 07:31:53 -0700 Message-ID: <firstname.lastname@example.org> (raw) In-Reply-To: <email@example.com/> (switched to email. Please respond via emailed reply-to-all, not via the bugzilla web interface). On Sun, 08 Sep 2019 00:04:26 +0000 firstname.lastname@example.org wrote: > https://bugzilla.kernel.org/show_bug.cgi?id=204789 > > Bug ID: 204789 > Summary: Boot failure with more than 256G of memory > Product: Memory Management > Version: 2.5 > Kernel Version: 5.2.x > Hardware: PPC-64 > OS: Linux > Tree: Mainline > Status: NEW > Severity: high > Priority: P1 > Component: Other > Assignee: email@example.com > Reporter: firstname.lastname@example.org > Regression: No "Yes" :) > Kernel series 5.2.x will not boot on my Talos II workstation with dual POWER9 > 18 core processors and 512G of physical memory with disable_radix=yes and 4k > pages. > > 5.3-rc6 did not work either. > > 5.1 and earlier boot fine. Thanks. It's probably best to report this on the powerpc list, cc'ed here. > I can get the system to boot IF I leave the Radix MMU enabled or if I boot a > kernel with 64k pages. I haven't yet tested enabling the Radix MMU with 64k > pages at the same time, but I suspect this would work. This is a system I > cannot take down TOO frequently. > > The system will also boot with the Radix MMU disabled and 4k pages with 256G or > less memory. Setting mem on the kernel CLI to 256G or less results in a > successful boot. Setting mem=257G or higher no Radix MMU and 4k pages and the > kernel will not boot. > > Petitboot comes up, but the system fails VERY early in boot in the serial > console with: > SIGTERM received, booting... > [ 23.838858] kexec_core: Starting new kernel > > Early printk is enabled, and it never progresses any further. > > 5.1 boots just fine with the Radix MMU disabled and 4k pages. > > Unfortunately, I currently need 4k pages for bcache to work, and Radix MMU > disabled in order for FreeBSD 12.x to work under KVM so I'm sticking with > 5.1.21 for now. > > I have been unable to reproduce this issue in KVM. > > Here are my PCIe peripherals: > 1. Microsemi/Adaptec HBA 1100-4i SAS controller > 2. Megaraid 9316-16i SAS RAID controller. > > I've only tried little endian as this is a little endian install. > > -- > You are receiving this mail because: > You are the assignee for the bug.
next parent reply index Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top [not found] <email@example.com/> 2019-09-11 14:31 ` Andrew Morton [this message] 2019-09-11 15:34 ` Cameron Berkenpas 2019-09-13 4:53 ` Aneesh Kumar K.V 2019-09-13 14:21 ` Aneesh Kumar K.V 2019-09-13 15:05 ` Cameron Berkenpas 2019-09-13 16:13 ` Aneesh Kumar K.V 2019-09-13 17:28 ` Cameron Berkenpas 2019-09-18 3:15 ` Aneesh Kumar K.V 2019-09-18 15:38 ` Cameron Berkenpas
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