From: Juergen Gross <jgross@suse.com>
To: Andy Lutomirski <luto@kernel.org>, X86 ML <x86@kernel.org>
Cc: Borislav Petkov <bpetkov@suse.de>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Brian Gerst <brgerst@gmail.com>,
Dave Hansen <dave.hansen@intel.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Boris Ostrovsky <boris.ostrovsky@oracle.com>
Subject: Re: [PATCH v2 15/20] x86/xen/64: Clean up SP code in cpu_initialize_context()
Date: Thu, 2 Nov 2017 10:56:49 +0100 [thread overview]
Message-ID: <e4f82376-dfeb-60a2-5dcd-6434075108c3@suse.com> (raw)
In-Reply-To: <d5b9a3da2b47c68325bd2bbe8f82d9554dee0d0f.1509609304.git.luto@kernel.org>
On 02/11/17 08:59, Andy Lutomirski wrote:
> I'm removing thread_struct::sp0, and Xen's usage of it is slightly
> dubious and unnecessary. Use appropriate helpers instead.
>
> While we're at at, reorder the code slightly to make it more obvious
> what's going on.
>
> Cc: Juergen Gross <jgross@suse.com>
> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
> Signed-off-by: Andy Lutomirski <luto@kernel.org>
Reviewed-by: Juergen Gross <jgross@suse.com>
Juergen
next prev parent reply other threads:[~2017-11-02 9:56 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-02 7:58 [PATCH v2 00/20] Pile o' entry/exit/sp0 changes Andy Lutomirski
2017-11-02 7:58 ` [PATCH v2 01/20] x86/asm/64: Remove the restore_c_regs_and_iret label Andy Lutomirski
2017-11-02 10:49 ` [tip:x86/asm] x86/entry/64: " tip-bot for Andy Lutomirski
2017-11-02 7:58 ` [PATCH v2 02/20] x86/asm/64: Split the iret-to-user and iret-to-kernel paths Andy Lutomirski
2017-11-02 10:49 ` [tip:x86/asm] x86/entry/64: Split the IRET-to-user and IRET-to-kernel paths tip-bot for Andy Lutomirski
2017-11-02 10:50 ` [PATCH v2 02/20] x86/asm/64: Split the iret-to-user and iret-to-kernel paths Borislav Petkov
2017-11-02 12:09 ` [PATCH] x86/entry/64: Shorten TEST instructions Borislav Petkov
2017-11-02 12:48 ` [tip:x86/asm] " tip-bot for Borislav Petkov
2017-11-02 7:59 ` [PATCH v2 03/20] x86/asm/64: Move SWAPGS into the common iret-to-usermode path Andy Lutomirski
2017-11-02 10:49 ` [tip:x86/asm] x86/entry/64: Move SWAPGS into the common IRET-to-usermode path tip-bot for Andy Lutomirski
2017-11-02 7:59 ` [PATCH v2 04/20] x86/asm/64: Simplify reg restore code in the standard IRET paths Andy Lutomirski
2017-11-02 10:50 ` [tip:x86/asm] x86/entry/64: " tip-bot for Andy Lutomirski
2017-11-02 7:59 ` [PATCH v2 05/20] x86/asm/64: Shrink paranoid_exit_restore and make labels local Andy Lutomirski
2017-11-02 10:50 ` [tip:x86/asm] x86/entry/64: " tip-bot for Andy Lutomirski
2017-11-02 7:59 ` [PATCH v2 06/20] x86/asm/64: Use pop instead of movq in syscall_return_via_sysret Andy Lutomirski
2017-11-02 10:51 ` [tip:x86/asm] x86/entry/64: " tip-bot for Andy Lutomirski
2017-11-02 7:59 ` [PATCH v2 07/20] x86/asm/64: Merge the fast and slow SYSRET paths Andy Lutomirski
2017-11-02 10:51 ` [tip:x86/asm] x86/entry/64: " tip-bot for Andy Lutomirski
2017-11-02 7:59 ` [PATCH v2 08/20] x86/entry/64: Use POP instead of MOV to restore regs on NMI return Andy Lutomirski
2017-11-02 10:51 ` [tip:x86/asm] " tip-bot for Andy Lutomirski
2017-11-02 7:59 ` [PATCH v2 09/20] x86/entry/64: Remove the RESTORE_..._REGS infrastructure Andy Lutomirski
2017-11-02 10:52 ` [tip:x86/asm] " tip-bot for Andy Lutomirski
2017-11-02 7:59 ` [PATCH v2 10/20] xen: add xen nmi trap entry Andy Lutomirski
2017-11-02 10:52 ` [tip:x86/asm] xen, x86/entry/64: Add xen NMI " tip-bot for Juergen Gross
2017-11-02 7:59 ` [PATCH v2 11/20] x86/asm/64: De-Xen-ify our NMI code Andy Lutomirski
2017-11-02 10:53 ` [tip:x86/asm] x86/entry/64: " tip-bot for Andy Lutomirski
2017-11-02 7:59 ` [PATCH v2 12/20] x86/asm/32: Pull MSR_IA32_SYSENTER_CS update code out of native_load_sp0() Andy Lutomirski
2017-11-02 10:53 ` [tip:x86/asm] x86/entry/32: Pull the " tip-bot for Andy Lutomirski
2017-11-02 7:59 ` [PATCH v2 13/20] x86/asm/64: Pass sp0 directly to load_sp0() Andy Lutomirski
2017-11-02 9:48 ` Ingo Molnar
2017-11-02 9:53 ` Ingo Molnar
2017-11-02 10:32 ` Andy Lutomirski
2017-11-02 10:53 ` [tip:x86/asm] x86/entry/64: Pass SP0 " tip-bot for Andy Lutomirski
2017-11-02 7:59 ` [PATCH v2 14/20] x86/asm: Add task_top_of_stack() to find the top of a task's stack Andy Lutomirski
2017-11-02 10:54 ` [tip:x86/asm] x86/entry: " tip-bot for Andy Lutomirski
2017-11-02 7:59 ` [PATCH v2 15/20] x86/xen/64: Clean up SP code in cpu_initialize_context() Andy Lutomirski
2017-11-02 9:56 ` Juergen Gross [this message]
2017-11-02 10:54 ` [tip:x86/asm] x86/xen/64, x86/entry/64: " tip-bot for Andy Lutomirski
2017-11-02 7:59 ` [PATCH v2 16/20] x86/boot/64: Stop initializing TSS.sp0 at boot Andy Lutomirski
2017-11-02 10:55 ` [tip:x86/asm] x86/entry/64: " tip-bot for Andy Lutomirski
2017-11-02 7:59 ` [PATCH v2 17/20] x86/asm/64: Remove all remaining direct thread_struct::sp0 reads Andy Lutomirski
2017-11-02 10:55 ` [tip:x86/asm] x86/entry/64: " tip-bot for Andy Lutomirski
2017-11-02 7:59 ` [PATCH v2 18/20] x86/boot/32: Fix cpu_current_top_of_stack initialization at boot Andy Lutomirski
2017-11-02 10:56 ` [tip:x86/asm] x86/entry/32: " tip-bot for Andy Lutomirski
2017-11-02 7:59 ` [PATCH v2 19/20] x86/asm/64: Remove thread_struct::sp0 Andy Lutomirski
2017-11-02 10:56 ` [tip:x86/asm] x86/entry/64: " tip-bot for Andy Lutomirski
2017-11-02 7:59 ` [PATCH v2 20/20] x86/traps: Use a new on_thread_stack() helper to clean up an assertion Andy Lutomirski
2017-11-02 10:56 ` [tip:x86/asm] " tip-bot for Andy Lutomirski
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