> From: Borislav Petkov [mailto:[email protected]] > Sent: Wednesday, May 11, 2016 10:21 AM > To: Yu, Yu-cheng <[email protected]> > Cc: [email protected]; [email protected]; H. Peter Anvin > <[email protected]>; Thomas Gleixner <[email protected]>; Ingo Molnar > <[email protected]>; Dave Hansen <[email protected]>; Andy > Lutomirski <[email protected]>; Prakhya, Sai Praneeth > <[email protected]>; Shankar, Ravi V > <[email protected]>; Yu, Fenghua <[email protected]> > 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 <[email protected]> > > > > Signed-off-by: Fenghua Yu <[email protected]> > > [[email protected]: rebase to current, rename to > > fpu_user_xstate_size] > > Signed-off-by: Yu-cheng Yu <[email protected]> > > Reviewed-by: Dave Hansen <[email protected]> > > 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 <[email protected]>. > > 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
