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Date: Tue, 14 Jul 2015 10:31:20 -0700 From: Ming Lin <mlin@...nel.org> To: Huang Ying <ying.huang@...el.com> Cc: Kent Overstreet <kent.overstreet@...il.com>, LKML <linux-kernel@...r.kernel.org>, LKP ML <lkp@...org> Subject: Re: [lkp] [block] 86ecb9456ac: On Tue, Jul 14, 2015 at 6:26 AM, Huang Ying <ying.huang@...el.com> wrote: > FYI, we noticed the below changes on > > git://git.kernel.org/pub/scm/linux/kernel/git/mlin/linux.git block-generic-req > commit 86ecb9456ac74ba3996d05ca1b09a7756a31bfd7 ("block: make generic_make_request handle arbitrarily sized bios") > > We found the following new message in kernel log, do you increase vmalloc usage in your patch? > > [ 6.939422] vmap allocation for size 16384 failed: use vmalloc=<size> to increase size. [ 6.939422] vmap allocation for size 16384 failed: use vmalloc=<size> to increase size. [ 6.955278] lguest: could not map switcher pages high This actually comes from lguest. Several weeks ago I tried lguest on qemu-kvm-i386 and saw similar problem. I didn't debug it further, but it's OK if disable CONFIG_SMP. I just double-checked it with v4.2-rc1(without this patchset) CONFIG_SMP: see the vmalloc error !CONFIG_SMP: no problem Could you confirm? BTW, it seams "qemu-kvm-i386 guest" as "lguest host" doesn't work. Need to run lguest on bare metal. Thanks. > > > Thanks, > Ying Huang -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.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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