Date: Sat, 26 May 2018 13:10:59 +0300 From: Konstantin Belousov <kostikbel@gmail.com> To: Johannes Lundberg <johalun0@gmail.com> Cc: freebsd-current <freebsd-current@freebsd.org> Subject: Re: Floating point in kernel? Message-ID: <20180526101059.GM88128@kib.kiev.ua> In-Reply-To: <CAECmPws88aex8zpis5CMD4uvqxF33810jimVy3sHYJGyq%2BPCCw@mail.gmail.com> References: <CAECmPws88aex8zpis5CMD4uvqxF33810jimVy3sHYJGyq%2BPCCw@mail.gmail.com>
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On Sat, May 26, 2018 at 10:59:50AM +0100, Johannes Lundberg wrote: > Hi > > The new AMD graphics drivers use floats in kernel space. > Upstream Linux code has something like: > kernel_fpu_begin(); > ... > kernel_fpu_end(); > > Do we have similar functions to save/restore FPU registers? Read fpu_kern(9).
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