From: Andi Kleen <andi@firstfloor.org>
To: Borislav Petkov <bp@alien8.de>
Cc: Andi Kleen <andi@firstfloor.org>,
x86@kernel.org, luto@kernel.org, linux-kernel@vger.kernel.org,
Andi Kleen <ak@linux.intel.com>
Subject: Re: [PATCH 6/8] x86: Enumerate kernel FSGS capability in AT_HWCAP2
Date: Sat, 11 Apr 2015 01:07:51 +0200 [thread overview]
Message-ID: <20150410230751.GB2366@two.firstfloor.org> (raw)
In-Reply-To: <20150410221418.GD28317@pd.tnic>
> > +++ b/arch/x86/include/uapi/asm/hwcap.h
> > @@ -0,0 +1,7 @@
> > +#ifndef _ASM_HWCAP_H
> > +#define _ASM_HWCAP_H 1
> > +
> > +#define HWCAP2_FSGSBASE (1 << 0) /* Kernel enabled RD/WR FS/GS BASE */
>
> BIT()
We cannot use BIT in uapi headers for obvious reasons.
> > cpumask_var_t cpu_initialized_mask;
> > cpumask_var_t cpu_callout_mask;
> > @@ -958,8 +961,10 @@ static void identify_cpu(struct cpuinfo_x86 *c)
> > numa_add_cpu(smp_processor_id());
> > #endif
> >
> > - if (cpu_has(c, X86_FEATURE_FSGSBASE))
> > + if (cpu_has(c, X86_FEATURE_FSGSBASE)) {
>
> static_cpu_has_safe()
That checks the boot cpu? We want to check the current CPU.
-Andi
--
ak@linux.intel.com -- Speaking for myself only.
next prev parent reply other threads:[~2015-04-10 23:07 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-10 15:50 Updated RD/WRFS/GSBASE patchkit Andi Kleen
2015-04-10 15:50 ` [PATCH 1/8] percpu: Add a DEFINE_PER_CPU_2PAGE_ALIGNED Andi Kleen
2015-04-10 15:50 ` [PATCH 2/8] x86: Naturally align the debug IST stack Andi Kleen
2015-04-10 18:50 ` Andy Lutomirski
2015-04-10 15:50 ` [PATCH 3/8] x86: Add intrinsics/macros for new rd/wr fs/gs base instructions Andi Kleen
2015-04-10 19:06 ` Andy Lutomirski
2015-04-10 19:07 ` Andy Lutomirski
2015-04-10 15:50 ` [PATCH 4/8] x86: Add support for rd/wr fs/gs base Andi Kleen
2015-04-10 19:12 ` Andy Lutomirski
2015-04-10 20:21 ` Andi Kleen
2015-04-10 20:25 ` Borislav Petkov
2015-04-10 20:52 ` Andi Kleen
2015-04-10 20:53 ` Borislav Petkov
2015-04-10 20:34 ` Andy Lutomirski
2015-04-10 20:41 ` Andi Kleen
2015-04-10 20:47 ` Andy Lutomirski
2015-04-10 20:57 ` Andi Kleen
2015-04-10 21:07 ` Andy Lutomirski
2015-04-10 22:52 ` Andi Kleen
2015-04-10 23:00 ` Andy Lutomirski
2015-04-10 23:05 ` Andi Kleen
2015-04-10 23:15 ` Andy Lutomirski
2015-04-10 23:18 ` Andi Kleen
2015-04-10 23:21 ` Andy Lutomirski
2015-04-10 23:16 ` Andi Kleen
2015-04-13 7:07 ` Jan Beulich
2015-04-10 15:50 ` [PATCH 5/8] x86: Make old K8 swapgs workaround conditional Andi Kleen
2015-04-10 21:46 ` Andy Lutomirski
2015-04-10 22:01 ` Borislav Petkov
2015-04-10 23:10 ` Andi Kleen
2015-04-11 7:18 ` Borislav Petkov
2015-04-10 15:50 ` [PATCH 6/8] x86: Enumerate kernel FSGS capability in AT_HWCAP2 Andi Kleen
2015-04-10 19:15 ` Andy Lutomirski
2015-04-10 22:14 ` Borislav Petkov
2015-04-10 23:07 ` Andi Kleen [this message]
2015-04-10 23:08 ` Andi Kleen
2015-04-11 7:16 ` Borislav Petkov
2015-04-11 8:35 ` Intel FSGSBASE support (was: Re: [PATCH 6/8] x86: Enumerate kernel FSGS capability in AT_HWCAP2) Ingo Molnar
2015-04-10 15:50 ` [PATCH 7/8] x86: Add documentation for rd/wr fs/gs base Andi Kleen
2015-04-10 19:17 ` Andy Lutomirski
2015-04-10 20:22 ` Andi Kleen
2015-04-10 20:38 ` Andy Lutomirski
2015-04-10 20:46 ` Andi Kleen
2015-04-10 20:52 ` Andy Lutomirski
2015-04-10 15:50 ` [PATCH 8/8] x86: Use rd/wr fs/gs base in arch_prctl Andi Kleen
2015-04-10 19:19 ` Andy Lutomirski
2015-04-10 19:58 ` Andi Kleen
-- strict thread matches above, loose matches on Subject: below --
2014-11-10 23:55 [PATCH 1/8] percpu: Add a DEFINE_PER_CPU_2PAGE_ALIGNED Andi Kleen
2014-11-10 23:55 ` [PATCH 6/8] x86: Enumerate kernel FSGS capability in AT_HWCAP2 Andi Kleen
2014-10-15 5:11 [PATCH 1/8] percpu: Add a DEFINE_PER_CPU_2PAGE_ALIGNED Andi Kleen
2014-10-15 5:11 ` [PATCH 6/8] x86: Enumerate kernel FSGS capability in AT_HWCAP2 Andi Kleen
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