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Date: Sun, 26 Nov 2017 16:54:46 +0100 From: Ingo Molnar <mingo@...nel.org> To: Thomas Gleixner <tglx@...utronix.de> Cc: linux-kernel@...r.kernel.org, Dave Hansen <dave.hansen@...ux.intel.com>, Andy Lutomirski <luto@...capital.net>, "H . Peter Anvin" <hpa@...or.com>, Peter Zijlstra <peterz@...radead.org>, Borislav Petkov <bp@...en8.de>, Linus Torvalds <torvalds@...ux-foundation.org> Subject: Re: [PATCH 24/43] x86/mm/kaiser: Mark per-cpu data structures required for entry/exit * Thomas Gleixner <tglx@...utronix.de> wrote: > On Fri, 24 Nov 2017, Ingo Molnar wrote: > > diff --git a/arch/x86/include/asm/desc.h b/arch/x86/include/asm/desc.h > > index aab4fe9f49f8..300090d1c209 100644 > > --- a/arch/x86/include/asm/desc.h > > +++ b/arch/x86/include/asm/desc.h > > @@ -46,7 +46,7 @@ struct gdt_page { > > struct desc_struct gdt[GDT_ENTRIES]; > > } __attribute__((aligned(PAGE_SIZE))); > > > > -DECLARE_PER_CPU_PAGE_ALIGNED(struct gdt_page, gdt_page); > > +DECLARE_PER_CPU_PAGE_ALIGNED_USER_MAPPED(struct gdt_page, gdt_page); > > This patch is obsolete. We have the alias mappings in the cpu_entry_area > already. Gone in the latest WIP.x86/mm. Thanks, Ingo
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