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Date: Tue, 19 May 2020 17:29:43 -0700 From: Andy Lutomirski <luto@...nel.org> To: Thomas Gleixner <tglx@...utronix.de> Cc: LKML <linux-kernel@...r.kernel.org>, X86 ML <x86@...nel.org>, "Paul E. McKenney" <paulmck@...nel.org>, Andy Lutomirski <luto@...nel.org>, Alexandre Chartre <alexandre.chartre@...cle.com>, Frederic Weisbecker <frederic@...nel.org>, Paolo Bonzini <pbonzini@...hat.com>, Sean Christopherson <sean.j.christopherson@...el.com>, Masami Hiramatsu <mhiramat@...nel.org>, Petr Mladek <pmladek@...e.com>, Steven Rostedt <rostedt@...dmis.org>, Joel Fernandes <joel@...lfernandes.org>, Boris Ostrovsky <boris.ostrovsky@...cle.com>, Juergen Gross <jgross@...e.com>, Brian Gerst <brgerst@...il.com>, Mathieu Desnoyers <mathieu.desnoyers@...icios.com>, Josh Poimboeuf <jpoimboe@...hat.com>, Will Deacon <will@...nel.org>, Tom Lendacky <thomas.lendacky@....com>, Wei Liu <wei.liu@...nel.org>, Michael Kelley <mikelley@...rosoft.com>, Jason Chen CJ <jason.cj.chen@...el.com>, Zhao Yakui <yakui.zhao@...el.com>, "Peter Zijlstra (Intel)" <peterz@...radead.org> Subject: Re: [patch V6 23/37] x86/entry: Provide IDTENTRY_SYSVEC On Fri, May 15, 2020 at 5:10 PM Thomas Gleixner <tglx@...utronix.de> wrote: > > > Provide a IDTENTRY variant for system vectors to consolidate the different > mechanisms to emit the ASM stubs for 32 an 64 bit. > > On 64bit this also moves the stack switching from ASM to C code. 32bit will > excute the system vectors w/o stack switching as before. As some of the > system vector handlers require access to pt_regs this requires a new stack > switching macro which can handle an argument. Is that last sentence obsolete? Otherwise, Acked-by: Andy Lutomirski <luto@...nel.org>
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