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From: Thomas Gleixner <tglx@linutronix.de>
To: Ingo Molnar <mingo@kernel.org>
Cc: linux-kernel@vger.kernel.org,
	Dave Hansen <dave.hansen@linux.intel.com>,
	Andy Lutomirski <luto@amacapital.net>,
	"H . Peter Anvin" <hpa@zytor.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Borislav Petkov <bp@alien8.de>,
	Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: [PATCH 24/43] x86/mm/kaiser: Mark per-cpu data structures required for entry/exit
Date: Sat, 25 Nov 2017 18:17:56 +0100 (CET)	[thread overview]
Message-ID: <alpine.DEB.2.20.1711251807010.2316@nanos> (raw)
In-Reply-To: <20171124172411.19476-25-mingo@kernel.org>

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This patch is obsolete.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.

Thanks,

	tglx

  reply	other threads:[~2017-11-25 17:18 UTC|newest]

Thread overview: 112+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-11-24 17:23 [PATCH 00/43] x86 entry-stack and Kaiser series, 2017/11/24, v2 version Ingo Molnar
2017-11-24 17:23 ` [PATCH 01/43] x86/decoder: Add new TEST instruction pattern Ingo Molnar
2017-11-24 17:23 ` [PATCH 02/43] x86/asm/64: Allocate and enable the SYSENTER stack Ingo Molnar
2017-11-24 17:23 ` [PATCH 03/43] x86/dumpstack: Add get_stack_info() support for " Ingo Molnar
2017-11-24 17:23 ` [PATCH 04/43] x86/gdt: Put per-cpu GDT remaps in ascending order Ingo Molnar
2017-11-24 17:23 ` [PATCH 05/43] x86/fixmap: Generalize the GDT fixmap mechanism Ingo Molnar
2017-11-24 17:23 ` [PATCH 06/43] x86/kasan/64: Teach KASAN about the cpu_entry_area Ingo Molnar
2017-11-24 17:23 ` [PATCH 07/43] x86/asm: Fix assumptions that the HW TSS is at the beginning of cpu_tss Ingo Molnar
2017-11-24 17:23 ` [PATCH 08/43] x86/dumpstack: Handle stack overflow on all stacks Ingo Molnar
2017-11-24 17:23 ` [PATCH 09/43] x86/asm: Move SYSENTER_stack to the beginning of struct tss_struct Ingo Molnar
2017-11-24 17:23 ` [PATCH 10/43] x86/asm: Remap the TSS into the cpu entry area Ingo Molnar
2017-11-24 17:23 ` [PATCH 11/43] x86/asm/64: Separate cpu_current_top_of_stack from TSS.sp0 Ingo Molnar
2017-11-24 17:23 ` [PATCH 12/43] x86/espfix/64: Stop assuming that pt_regs is on the entry stack Ingo Molnar
2017-11-24 18:25   ` Borislav Petkov
2017-11-24 19:12     ` Andy Lutomirski
2017-11-26 14:05       ` Ingo Molnar
2017-11-26 17:28         ` Borislav Petkov
2017-11-27  9:19           ` Ingo Molnar
2017-11-24 17:23 ` [PATCH 13/43] x86/asm/64: Use a percpu trampoline stack for IDT entries Ingo Molnar
2017-11-24 19:02   ` Borislav Petkov
2017-11-26 14:16     ` Ingo Molnar
2017-11-24 17:23 ` [PATCH 14/43] x86/asm/64: Return to userspace from the trampoline stack Ingo Molnar
2017-11-24 19:10   ` Borislav Petkov
2017-11-26 14:18     ` Ingo Molnar
2017-11-26 17:33       ` Borislav Petkov
2017-11-24 17:23 ` [PATCH 15/43] x86/entry/64: Create a percpu SYSCALL entry trampoline Ingo Molnar
2017-11-25 11:40   ` Borislav Petkov
2017-11-25 15:00     ` Andy Lutomirski
2017-11-26 14:26       ` [PATCH] " Ingo Molnar
2017-11-24 17:23 ` [PATCH 16/43] x86/irq: Remove an old outdated comment about context tracking races Ingo Molnar
2017-11-25 12:05   ` Borislav Petkov
2017-11-24 17:23 ` [PATCH 17/43] x86/irq/64: In the stack overflow warning, print the offending IP Ingo Molnar
2017-11-25 12:07   ` Borislav Petkov
2017-11-24 17:23 ` [PATCH 18/43] x86/entry/64: Move the IST stacks into cpu_entry_area Ingo Molnar
2017-11-25 12:34   ` Borislav Petkov
2017-11-24 17:23 ` [PATCH 19/43] x86/entry/64: Remove the SYSENTER stack canary Ingo Molnar
2017-11-25 15:29   ` Borislav Petkov
2017-11-24 17:23 ` [PATCH 20/43] x86/entry: Clean up SYSENTER_stack code Ingo Molnar
2017-11-25 16:39   ` Borislav Petkov
2017-11-25 16:50     ` Thomas Gleixner
2017-11-25 16:55       ` Andy Lutomirski
2017-11-25 17:03         ` Thomas Gleixner
2017-11-25 17:10           ` Borislav Petkov
2017-11-25 17:26             ` Andy Lutomirski
2017-11-27  9:27               ` Peter Zijlstra
2017-11-24 17:23 ` [PATCH 21/43] x86/mm/kaiser: Disable global pages by default with KAISER Ingo Molnar
2017-11-24 17:23 ` [PATCH 22/43] x86/mm/kaiser: Prepare assembly for entry/exit CR3 switching Ingo Molnar
2017-11-25  0:02   ` Thomas Gleixner
2017-11-25 12:41     ` Thomas Gleixner
2017-11-26 11:50   ` Borislav Petkov
2017-11-26 14:55     ` [PATCH v2] x86/mm/kaiser: Prepare the x86/entry assembly code " Ingo Molnar
2017-11-27 13:29       ` Josh Poimboeuf
2017-11-27 13:36         ` Thomas Gleixner
2017-11-24 17:23 ` [PATCH 23/43] x86/mm/kaiser: Introduce user-mapped per-cpu areas Ingo Molnar
2017-11-26 17:41   ` Borislav Petkov
2017-11-27  9:26     ` Ingo Molnar
2017-11-27 21:14     ` Dave Hansen
2017-11-24 17:23 ` [PATCH 24/43] x86/mm/kaiser: Mark per-cpu data structures required for entry/exit Ingo Molnar
2017-11-25 17:17   ` Thomas Gleixner [this message]
2017-11-26 15:54     ` Ingo Molnar
2017-11-24 17:23 ` [PATCH 25/43] x86/mm/kaiser: Unmap kernel from userspace page tables (core patch) Ingo Molnar
2017-11-26 18:51   ` Borislav Petkov
2017-11-27  9:30     ` Ingo Molnar
2017-11-26 20:49   ` Borislav Petkov
2017-11-27 10:38     ` Ingo Molnar
2017-11-26 22:25   ` [PATCH 25/43] x86/mm/kaiser: Unmap kernel from userspace page tables (core patch), noexec=off Borislav Petkov
2017-11-26 22:41     ` Thomas Gleixner
2017-11-24 17:23 ` [PATCH 26/43] x86/mm/kaiser: Allow NX poison to be set in p4d/pgd Ingo Molnar
2017-11-24 17:23 ` [PATCH 27/43] x86/mm/kaiser: Make sure static PGDs are 8k in size Ingo Molnar
2017-11-24 17:23 ` [PATCH 28/43] x86/mm/kaiser: Map cpu entry area Ingo Molnar
2017-11-25 21:40   ` Thomas Gleixner
2017-11-26 15:19     ` Ingo Molnar
2017-11-24 17:23 ` [PATCH 29/43] x86/mm/kaiser: Map dynamically-allocated LDTs Ingo Molnar
2017-11-24 17:23 ` [PATCH 30/43] x86/mm/kaiser: Map espfix structures Ingo Molnar
2017-11-24 17:23 ` [PATCH 31/43] x86/mm/kaiser: Map entry stack variable Ingo Molnar
2017-11-24 17:24 ` [PATCH 32/43] x86/mm/kaiser: Map virtually-addressed performance monitoring buffers Ingo Molnar
2017-11-24 17:24 ` [PATCH 33/43] x86/mm: Move CR3 construction functions Ingo Molnar
2017-11-24 17:24 ` [PATCH 34/43] x86/mm: Remove hard-coded ASID limit checks Ingo Molnar
2017-11-24 17:24 ` [PATCH 35/43] x86/mm: Put mmu-to-h/w ASID translation in one place Ingo Molnar
2017-11-24 17:24 ` [PATCH 36/43] x86/mm/kaiser: Allow flushing for future ASID switches Ingo Molnar
2017-11-24 17:24 ` [PATCH 37/43] x86/mm/kaiser: Use PCID feature to make user and kernel switches faster Ingo Molnar
2017-11-24 17:24 ` [PATCH 38/43] x86/mm/kaiser: Disable native VSYSCALL Ingo Molnar
2017-11-24 17:24 ` [PATCH 39/43] x86/mm/kaiser: Add debugfs file to turn KAISER on/off at runtime Ingo Molnar
2017-11-24 17:24 ` [PATCH 40/43] x86/mm/kaiser: Add a function to check for KAISER being enabled Ingo Molnar
2017-11-24 17:24 ` [PATCH 41/43] x86/mm/kaiser: Un-poison PGDs at runtime Ingo Molnar
2017-11-24 17:24 ` [PATCH 42/43] x86/mm/kaiser: Allow KAISER to be enabled/disabled " Ingo Molnar
2017-11-25 19:18   ` Thomas Gleixner
2017-11-25 19:53     ` Andy Lutomirski
2017-11-25 20:05       ` Thomas Gleixner
2017-11-25 22:10         ` Andy Lutomirski
2017-11-25 22:48           ` Thomas Gleixner
2017-11-26  0:21             ` Andy Lutomirski
2017-11-26  8:11               ` Thomas Gleixner
2017-11-24 17:24 ` [PATCH 43/43] x86/mm/kaiser: Add Kconfig Ingo Molnar
2017-11-24 20:22 ` [crash] PANIC: double fault, error_code: 0x0 Ingo Molnar
2017-11-24 20:59   ` Andy Lutomirski
2017-11-24 21:49     ` Ingo Molnar
2017-11-24 21:52       ` Ingo Molnar
2017-11-24 22:09   ` Ingo Molnar
2017-11-24 22:35     ` Andy Lutomirski
2017-11-24 22:53       ` Ingo Molnar
2017-11-25  9:21         ` Ingo Molnar
2017-11-25  9:32           ` Ingo Molnar
2017-11-25  9:39             ` Ingo Molnar
2017-11-25 11:17               ` [PATCH] x86/mm/kaiser: Fix IRQ entries text section mapping Ingo Molnar
2017-11-25 16:08                 ` Thomas Gleixner
2017-11-25 20:06                   ` Steven Rostedt
2017-11-27  8:14                   ` Peter Zijlstra
2017-11-27  8:21                     ` Peter Zijlstra
2017-11-25  4:09   ` [crash] PANIC: double fault, error_code: 0x0 Dave Hansen
2017-11-25  4:15     ` Dave Hansen
  -- strict thread matches above, loose matches on Subject: below --
2017-11-24  9:14 [PATCH 00/43] x86 entry-stack and Kaiser series, 2017/11/24 version Ingo Molnar
2017-11-24  9:14 ` [PATCH 24/43] x86/mm/kaiser: Mark per-cpu data structures required for entry/exit Ingo Molnar

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