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Date: Fri, 28 Feb 2020 22:47:42 +0100 From: Borislav Petkov <bp@...en8.de> To: Yu-cheng Yu <yu-cheng.yu@...el.com> Cc: linux-kernel@...r.kernel.org, x86@...nel.org, "H. Peter Anvin" <hpa@...or.com>, Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, Dave Hansen <dave.hansen@...ux.intel.com>, Tony Luck <tony.luck@...el.com>, Andy Lutomirski <luto@...nel.org>, Rik van Riel <riel@...riel.com>, "Ravi V. Shankar" <ravi.v.shankar@...el.com>, Sebastian Andrzej Siewior <bigeasy@...utronix.de>, Fenghua Yu <fenghua.yu@...el.com>, Peter Zijlstra <peterz@...radead.org> Subject: Re: [PATCH v2 8/8] x86/fpu/xstate: Restore supervisor xstates for __fpu__restore_sig() On Fri, Feb 28, 2020 at 01:22:39PM -0800, Yu-cheng Yu wrote: > The code is for sigreturn only. Because of lazy-restore, > copy_xregs_to_kernel() does not happen all the time. What does "not all the time" mean? You need to quantify this more precisely. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette
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