Date: Wed, 29 Jan 2014 14:29:13 -0800 From: Adrian Chadd <adrian@freebsd.org> To: Stacey Son <sson@freebsd.org> Cc: "freebsd-mips@freebsd.org" <freebsd-mips@freebsd.org> Subject: Re: More trapframe panics Message-ID: <CAJ-Vmo=RB8cequSK=9UrU6A6v-9KU3u-wQZY5n-5keAhBYu9=Q@mail.gmail.com> In-Reply-To: <DBAE1C04-F150-4EAE-8134-014F065E4058@FreeBSD.org> References: <52E42A1B.3040907@rewt.org.uk> <CACVs6=--Qy_8poWdHdCXYKqkO22=dvHhW8=Uma8kLR%2BhCoZDxw@mail.gmail.com> <CA%2B7sy7ATMTjdWD5%2BNYCJPb=AWmeJoUwbgRdf=%2Bb4uYsJO0UUfw@mail.gmail.com> <CACVs6=8ie2x16c4bafG4zaJS4UV%2BXT1ooJkm%2BdwT5%2BdSS%2B-p0Q@mail.gmail.com> <CA%2B7sy7BEgvMNJKiR4bSSGZ_BE1T5W3Hujq8_2C6JjPC1bFwO6A@mail.gmail.com> <6354182D-B1D3-4B2E-BEEC-37A2A725A099@bsdimp.com> <52E67F45.20402@rewt.org.uk> <2912AEFA-AA0C-456A-A814-363478BFC900@bsdimp.com> <CAJ-VmokDYS6CBAJp_G=4yKeb4O6yOXVmx%2B8Mshzx5RCBjM4VwA@mail.gmail.com> <52E781C6.2050308@rewt.org.uk> <DBAE1C04-F150-4EAE-8134-014F065E4058@FreeBSD.org>
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isn't there a way to probe the valid pagemask values? I thought I read some way of writing in pagemask values into a fixed TLB entry and then reading them back to see which bit(s) are set and cleared. That way we could maybe do the above at boot-time with minimal evilness. -a
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