On Tue, Oct 10, 2017 at 07:38:31PM +0100, Dave P Martin wrote: > This patch implements the core logic for changing a task's vector > length on request from userspace. This will be used by the ptrace > and prctl frontends that are implemented in later patches. > > The SVE architecture permits, but does not require, implementations > to support vector lengths that are not a power of two. To handle > this, logic is added to check a requested vector length against a > possibly sparse bitmap of available vector lengths at runtime, so > that the best supported value can be chosen. > > Signed-off-by: Dave Martin <Dave.Martin@xxxxxxx> > Cc: Alex Bennée <alex.bennee@xxxxxxxxxx> Reviewed-by: Catalin Marinas <catalin.marinas@xxxxxxx>
