Date: Sat, 22 Nov 2014 19:27:52 -0800 From: Peter Grehan <grehan@freebsd.org> To: Shawn Webb <lattera@gmail.com> Cc: freebsd-virtualization@freebsd.org Subject: Re: bhyve cannot allocate memory Message-ID: <54715438.3090905@freebsd.org> In-Reply-To: <CADt0fhxEavv5e6tbmORxUZgPNGQNZiu2O=PtO6aKhW%2B_fkRSZQ@mail.gmail.com> References: <20141122215245.d9380cc4e43cb5e60d479009@gmail.com> <20141122220202.09523b0ae828993174af05d8@gmail.com> <5471513C.6040400@freebsd.org> <CADt0fhxEavv5e6tbmORxUZgPNGQNZiu2O=PtO6aKhW%2B_fkRSZQ@mail.gmail.com>
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Hi Shawn, > It's hardenedBSD. I'll try a stock build tomorrow. The only change we > have that could affect bhyve is the removal of map_at_zero. This may be the issue. bhyve creates a kernel-use-only vmspace that represents guest memory (starting at 0), and is used to allow the VM system to manage the EPT paging structures (full details in the AsiaBSDcon paper at http://people.freebsd.org/~neel/bhyve/bhyve_nested_paging.pdf). Is there a way to bypass the map-at-zero check for this usage in HardenedBSD ? later, Peter.
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