From: "Jürgen Groß" <jgross@suse.com>
To: Borislav Petkov <bp@alien8.de>
Cc: xen-devel@lists.xenproject.org, x86@kernel.org,
linux-kernel@vger.kernel.org,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>
Subject: Re: [PATCH v3 07/15] x86/alternative: support "not feature" and ALTERNATIVE_TERNARY
Date: Tue, 19 Jan 2021 13:12:04 +0100 [thread overview]
Message-ID: <76e70343-e9f6-9054-4fd1-703821fe77df@suse.com> (raw)
In-Reply-To: <20210119120647.GJ27433@zn.tnic>
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On 19.01.21 13:06, Borislav Petkov wrote:
> On Tue, Jan 19, 2021 at 12:35:42PM +0100, Jürgen Groß wrote:
>> In fact this should rather be named "X86_FEATURE_TRUE", as this is its
>> semantics.
>>
>> And I think I can define it to the value 0xffff instead of using a
>> "real" bit for it.
>
> A real bit is cheap - a special value to pay attention to in the future
> not so much. Also we do have X86_FEATURE_ALWAYS already which has a
> similar purpose...
>
Oh, well hidden. :-)
I'll use that one.
Juergen
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next prev parent reply other threads:[~2021-01-19 12:21 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-17 9:31 [PATCH v3 00/15] x86: major paravirt cleanup Juergen Gross
2020-12-17 9:31 ` [PATCH v3 01/15] x86/xen: use specific Xen pv interrupt entry for MCE Juergen Gross
2020-12-17 9:31 ` [PATCH v3 02/15] x86/xen: use specific Xen pv interrupt entry for DF Juergen Gross
2020-12-17 9:31 ` [PATCH v3 03/15] x86/pv: switch SWAPGS to ALTERNATIVE Juergen Gross
2020-12-17 9:31 ` [PATCH v3 04/15] x86/xen: drop USERGS_SYSRET64 paravirt call Juergen Gross
2020-12-17 9:31 ` [PATCH v3 05/15] x86: rework arch_local_irq_restore() to not use popf Juergen Gross
2020-12-17 9:31 ` [PATCH v3 06/15] x86/paravirt: switch time pvops functions to use static_call() Juergen Gross
2020-12-17 17:31 ` Michael Kelley
2021-01-06 10:41 ` Borislav Petkov
2021-01-19 11:36 ` Jürgen Groß
2021-01-06 10:03 ` Borislav Petkov
2021-01-19 11:33 ` Jürgen Groß
2020-12-17 9:31 ` [PATCH v3 07/15] x86/alternative: support "not feature" and ALTERNATIVE_TERNARY Juergen Gross
2021-01-07 19:08 ` Borislav Petkov
2021-01-19 11:35 ` Jürgen Groß
2021-01-19 12:06 ` Borislav Petkov
2021-01-19 12:12 ` Jürgen Groß [this message]
2020-12-17 9:31 ` [PATCH v3 08/15] x86: add new features for paravirt patching Juergen Gross
2020-12-17 13:12 ` kernel test robot
2021-01-14 18:30 ` Borislav Petkov
2021-01-14 18:40 ` Borislav Petkov
2020-12-17 9:31 ` [PATCH v3 09/15] x86/paravirt: remove no longer needed 32-bit pvops cruft Juergen Gross
2020-12-17 9:31 ` [PATCH v3 10/15] x86/paravirt: simplify paravirt macros Juergen Gross
2020-12-17 16:46 ` kernel test robot
2020-12-17 9:31 ` [PATCH v3 11/15] x86/paravirt: switch iret pvops to ALTERNATIVE Juergen Gross
2020-12-17 9:31 ` [PATCH v3 12/15] objtool: Alternatives vs ORC, the hard way Juergen Gross
2020-12-17 9:31 ` [PATCH v3 13/15] x86/paravirt: add new macros PVOP_ALT* supporting pvops in ALTERNATIVEs Juergen Gross
2020-12-17 9:31 ` [PATCH v3 14/15] x86/paravirt: switch functions with custom code to ALTERNATIVE Juergen Gross
2020-12-17 16:42 ` kernel test robot
2020-12-17 9:31 ` [PATCH v3 15/15] x86/paravirt: have only one paravirt patch function Juergen Gross
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