> From: Borislav Petkov [mailto:b...@suse.de] > Sent: Wednesday, May 11, 2016 10:21 AM > To: Yu, Yu-cheng <yu-cheng...@intel.com> > Cc: linux-kernel@vger.kernel.org; x...@kernel.org; H. Peter Anvin > <h...@zytor.com>; Thomas Gleixner <t...@linutronix.de>; Ingo Molnar > <mi...@redhat.com>; Dave Hansen <dave.han...@linux.intel.com>; Andy > Lutomirski <l...@kernel.org>; Prakhya, Sai Praneeth > <sai.praneeth.prak...@intel.com>; Shankar, Ravi V > <ravi.v.shan...@intel.com>; Yu, Fenghua <fenghua...@intel.com> > Subject: Re: [PATCH v6 01/13] x86/xsaves: Define and use > fpu_user_xstate_size > > On Tue, May 10, 2016 at 04:29:53PM -0700, Yu-cheng Yu wrote: > > The XSAVE area of kernel can be in standard or compacted format; > > "The kernel xstate area... " > > and can we call it the xstate area as there are a bunch of XSAVE* insns > touching it. The file which deals with it is even called that: > arch/x86/kernel/fpu/xstate.c > > > it is always in standard format for user mode. When XSAVES is enabled, > > the kernel uses the compacted format and it is necessary to use a > > separate fpu_user_xstate_size for signal/ptrace frames. > > > > Based on an earlier patch from Fenghua Yu <fenghua...@intel.com> > > > > Signed-off-by: Fenghua Yu <fenghua...@intel.com> > > [yu-cheng...@intel.com: rebase to current, rename to > > fpu_user_xstate_size] > > Signed-off-by: Yu-cheng Yu <yu-cheng...@intel.com> > > Reviewed-by: Dave Hansen <dave.han...@intel.com> > > Maybe I wasn't as clear as I hoped to be. Let me be more specific: > > So you either need to do: > > --- > From: Fenghua > > ... > > Signed-off-by: Fenghua > Signed-off-by: You > ... > --- > > or > > --- > > Based on an earlier patch from Fenghua Yu <fenghua...@intel.com>. > > Signed-off-by: You > > --- > > with the second variant making you the author implicitly because you're the > sender. > > Makes more sense this way?
Is this possible to have the third one? From: Yu-cheng Signed-off-by: Yu-cheng Signed-off-by: Fenghua Thanks. -Fenghua
