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Re: [Xen-devel] [PATCH v3 2/4] x86: Remap GDT tables in the Fixmap section
- To: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
- From: Thomas Garnier <thgarnie@xxxxxxxxxx>
- Date: Wed, 15 Feb 2017 07:41:45 -0800
- Cc: linux-efi@xxxxxxxxxxxxxxx, Stanislaw Gruszka <sgruszka@xxxxxxxxxx>, kvm list <kvm@xxxxxxxxxxxxxxx>, Radim Krčmář <rkrcmar@xxxxxxxxxx>, Matt Fleming <matt@xxxxxxxxxxxxxxxxxxx>, Paul Gortmaker <paul.gortmaker@xxxxxxxxxxxxx>, Alexander Potapenko <glider@xxxxxxxxxx>, Pavel Machek <pavel@xxxxxx>, "H . Peter Anvin" <hpa@xxxxxxxxx>, Kernel Hardening <kernel-hardening@xxxxxxxxxxxxxxxxxx>, Jiri Olsa <jolsa@xxxxxxxxxx>, Dave Hansen <dave.hansen@xxxxxxxxx>, Andi Kleen <ak@xxxxxxxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx, Christian Borntraeger <borntraeger@xxxxxxxxxx>, Michael Ellerman <mpe@xxxxxxxxxxxxxx>, Joerg Roedel <joro@xxxxxxxxxx>, the arch/x86 maintainers <x86@xxxxxxxxxx>, kasan-dev <kasan-dev@xxxxxxxxxxxxxxxx>, Peter Zijlstra <peterz@xxxxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Andrey Ryabinin <aryabinin@xxxxxxxxxxxxx>, Borislav Petkov <bp@xxxxxxx>, Len Brown <len.brown@xxxxxxxxx>, Rik van Riel <riel@xxxxxxxxxx>, Jiri Kosina <jikos@xxxxxxxxxx>, Kees Cook <keescook@xxxxxxxxxxxx>, Arnd Bergmann <arnd@xxxxxxxx>, He Chen <he.chen@xxxxxxxxxxxxxxx>, Brian Gerst <brgerst@xxxxxxxxx>, Rusty Russell <rusty@xxxxxxxxxxxxxxx>, lguest@xxxxxxxxxxxxxxxx, Andy Lutomirski <luto@xxxxxxxxxx>, Josh Poimboeuf <jpoimboe@xxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Adam Buchbinder <adam.buchbinder@xxxxxxxxx>, Dmitry Vyukov <dvyukov@xxxxxxxxxx>, Juergen Gross <jgross@xxxxxxxx>, Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx>, Linux PM list <linux-pm@xxxxxxxxxxxxxxx>, "Rafael J . Wysocki" <rjw@xxxxxxxxxxxxx>, LKML <linux-kernel@xxxxxxxxxxxxxxx>, Andy Lutomirski <luto@xxxxxxxxxxxxxx>, "Luis R . Rodriguez" <mcgrof@xxxxxxxxxx>, Paolo Bonzini <pbonzini@xxxxxxxxxx>, Vitaly Kuznetsov <vkuznets@xxxxxxxxxx>, Tim Chen <tim.c.chen@xxxxxxxxxxxxxxx>
- Delivery-date: Wed, 15 Feb 2017 15:41:55 +0000
- List-id: Xen developer discussion <xen-devel.lists.xen.org>
On Wed, Feb 15, 2017 at 7:37 AM, Boris Ostrovsky
<boris.ostrovsky@xxxxxxxxxx> wrote:
> On 02/14/2017 02:42 PM, Thomas Garnier wrote:
>> diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c
>> index 0dee6f59ea82..6399bab936cd 100644
>> --- a/arch/x86/xen/smp.c
>> +++ b/arch/x86/xen/smp.c
>> @@ -391,7 +391,7 @@ cpu_initialize_context(unsigned int cpu, struct
>> task_struct *idle)
>> if (ctxt == NULL)
>> return -ENOMEM;
>>
>> - gdt = get_cpu_gdt_table(cpu);
>> + gdt = get_cpu_gdt_rw(cpu);
>>
>> #ifdef CONFIG_X86_32
>> ctxt->user_regs.fs = __KERNEL_PERCPU;
>
>
> Which tree are these patches against? The chunk above cannot be applied
> to current Linus tree but it can be applied against Xen staging tree
> that has not been pulled yet.
>
> I can apply this manually but the series crashes PV guests so I want to
> make sure I am using right bits.
>
That was against linux-next (next-20170213 tag).
> -boris
>
>
--
Thomas
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