Date: Sat, 21 Apr 2012 20:56:38 -0700 From: perryh@pluto.rain.com To: kob6558@gmail.com Cc: freebsd-x11@freebsd.org, elvenpath666@gmail.com Subject: Re: AMD A8-3870K with FreeBSD 9.0 Message-ID: <4f938176.r8KOovexKGOToGTd%perryh@pluto.rain.com> In-Reply-To: <CAN6yY1s5=x4hY-OLCAKtu2HBXoX%2Bcbon113cpNuO9ZHQ8KFN1w@mail.gmail.com> References: <CA%2BVt=QycF==m=owYawgcpOkVMG7UBGg%2BXbJzbRXWK-HFZjFHPA@mail.gmail.com> <CAN6yY1s5=x4hY-OLCAKtu2HBXoX%2Bcbon113cpNuO9ZHQ8KFN1w@mail.gmail.com>
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Kevin Oberman <kob6558@gmail.com> wrote: > KMS requires a custom kernel that knows a great deal > about a specific graphics chip-set. Is it strictly necessary for the chipset-specific code to be _in the kernel_? While I/O-specific opcodes can only be executed with kernel privilege, it seems as if it "should" be possible to cover that requirement with a generic ioctl capability; and memory-mapped I/O can presumably be done from userland once the driver sets up the address space appropriately.
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