From: "Jan Beulich" <JBeulich@suse.com>
To: Julien Grall <julien.grall@arm.com>
Cc: Tim Deegan <tim@xen.org>,
Stefano Stabellini <sstabellini@kernel.org>,
Wei Liu <wei.liu2@citrix.com>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
George Dunlap <George.Dunlap@eu.citrix.com>,
Andrew Cooper <andrew.cooper3@citrix.com>,
Ian Jackson <Ian.Jackson@eu.citrix.com>,
Dario Faggioli <dfaggioli@suse.com>,
Martin Pohlack <mpohlack@amazon.de>,
nmanthey@amazon.de, "Martin Mazein(amazein)" <amazein@amazon.de>,
xen-devel <xen-devel@lists.xenproject.org>,
Julian Stecklina <jsteckli@amazon.de>,
David Woodhouse <dwmw@amazon.co.uk>,
Bjoern Doebel <doebel@amazon.de>
Subject: Re: [PATCH SpectreV1+L1TF v4 03/11] config: introduce L1TF_LFENCE option
Date: Wed, 23 Jan 2019 06:39:04 -0700 [thread overview]
Message-ID: <5C486E780200007800210705@prv1-mh.provo.novell.com> (raw)
In-Reply-To: <2e60f86f-8bf4-43dc-4343-8074667b6f6d@arm.com>
>>> On 23.01.19 at 14:24, <julien.grall@arm.com> wrote:
> On 23/01/2019 11:51, Norbert Manthey wrote:
>> --- a/xen/include/xen/nospec.h
>> +++ b/xen/include/xen/nospec.h
>> @@ -68,10 +68,18 @@ static inline bool lfence_true(void) { return true; }
>> #endif
>>
>> /*
>> - * protect evaluation of conditional with respect to speculation
>> + * allow to protect evaluation of conditional with respect to speculation on x86
>> */
>> -#define evaluate_nospec(condition) \
>> +#if defined(CONFIG_L1TF_LFENCE_NONE) || !defined(CONFIG_X86)
>> +#define evaluate_nospec(condition) (condition)
>> +#elif defined(CONFIG_L1TF_LFENCE_BOTH)
>> +#define evaluate_nospec(condition) \
>> (((condition) && lfence_true()) || !lfence_true())
>> +#elif defined(CONFIG_L1TF_LFENCE_TRUE)
>> +#define evaluate_nospec(condition) ((condition) && lfence_true())
>> +#elif defined(CONFIG_L1TF_LFENCE_INTERMEDIATE)
>> +#define evaluate_nospec(condition) ({ bool res = (condition); rmb(); res; })
> +#endif
>
> None of the configs are defined on Arm, so can this be moved in arch-x86?
To be honest I'd like to avoid introducing asm/nospec.h for the time
being.
Jan
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next prev parent reply other threads:[~2019-01-23 13:39 UTC|newest]
Thread overview: 150+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-23 11:51 SpectreV1+L1TF Patch Series Norbert Manthey
2019-01-23 11:51 ` [PATCH SpectreV1+L1TF v4 01/11] is_control_domain: block speculation Norbert Manthey
2019-01-23 13:07 ` Jan Beulich
2019-01-23 13:20 ` Julien Grall
2019-01-23 13:40 ` Jan Beulich
2019-01-23 13:20 ` Jan Beulich
2019-01-24 12:07 ` Norbert Manthey
2019-01-24 20:33 ` Andrew Cooper
2019-01-25 9:19 ` Jan Beulich
2019-01-23 11:51 ` [PATCH SpectreV1+L1TF v4 02/11] is_hvm/pv_domain: " Norbert Manthey
2019-01-23 11:51 ` [PATCH SpectreV1+L1TF v4 03/11] config: introduce L1TF_LFENCE option Norbert Manthey
2019-01-23 13:18 ` Jan Beulich
2019-01-24 12:11 ` Norbert Manthey
2019-01-23 13:24 ` Julien Grall
2019-01-23 13:39 ` Jan Beulich [this message]
2019-01-23 13:44 ` Julien Grall
2019-01-23 14:45 ` Jan Beulich
2019-01-24 12:21 ` Norbert Manthey
2019-01-24 21:29 ` Andrew Cooper
2019-01-25 10:14 ` Jan Beulich
2019-01-25 10:50 ` Norbert Manthey
2019-01-25 13:09 ` Jan Beulich
2019-01-27 20:28 ` Norbert Manthey
2019-01-28 7:35 ` Jan Beulich
2019-01-28 7:56 ` Norbert Manthey
2019-01-28 8:24 ` Jan Beulich
2019-01-28 10:07 ` Norbert Manthey
2019-01-31 22:39 ` Andrew Cooper
2019-02-01 8:02 ` Jan Beulich
2019-01-23 11:51 ` [PATCH SpectreV1+L1TF v4 04/11] x86/hvm: block speculative out-of-bound accesses Norbert Manthey
2019-01-31 19:31 ` Andrew Cooper
2019-02-01 9:06 ` Jan Beulich
2019-01-23 11:51 ` [PATCH SpectreV1+L1TF v4 05/11] common/grant_table: " Norbert Manthey
2019-01-23 13:37 ` Jan Beulich
2019-01-28 14:45 ` Norbert Manthey
2019-01-28 15:09 ` Jan Beulich
2019-01-29 8:33 ` Norbert Manthey
2019-01-29 9:46 ` Jan Beulich
2019-01-29 13:47 ` Norbert Manthey
2019-01-29 15:11 ` Jan Beulich
2019-01-30 8:06 ` Norbert Manthey
2019-01-30 11:35 ` Jan Beulich
2019-01-23 11:51 ` [PATCH SpectreV1+L1TF v4 06/11] common/memory: " Norbert Manthey
2019-01-23 11:57 ` [PATCH SpectreV1+L1TF v4 07/11] nospec: enable lfence on Intel Norbert Manthey
2019-01-24 22:29 ` Andrew Cooper
2019-01-27 20:09 ` Norbert Manthey
2019-01-23 11:57 ` [PATCH SpectreV1+L1TF v4 08/11] xen/evtchn: block speculative out-of-bound accesses Norbert Manthey
2019-01-24 16:56 ` Jan Beulich
2019-01-24 19:50 ` Norbert Manthey
2019-01-25 9:23 ` Jan Beulich
2019-01-23 11:57 ` [PATCH SpectreV1+L1TF v4 09/11] x86/vioapic: " Norbert Manthey
2019-01-25 16:34 ` Jan Beulich
2019-01-28 11:03 ` Norbert Manthey
2019-01-28 11:12 ` Jan Beulich
2019-01-28 12:20 ` Norbert Manthey
2019-01-23 11:57 ` [PATCH SpectreV1+L1TF v4 10/11] x86/hvm/hpet: " Norbert Manthey
2019-01-25 16:50 ` Jan Beulich
2019-01-23 11:57 ` [PATCH SpectreV1+L1TF v4 11/11] x86/CPUID: " Norbert Manthey
2019-01-24 21:05 ` SpectreV1+L1TF Patch Series Andrew Cooper
2019-01-28 13:56 ` Norbert Manthey
2019-01-28 8:28 ` Jan Beulich
[not found] ` <5C4EBD1A0200007800211954@suse.com>
2019-01-28 8:47 ` Juergen Gross
2019-01-28 9:56 ` Jan Beulich
[not found] ` <9C03B9BA0200004637554D14@prv1-mh.provo.novell.com>
[not found] ` <00FAA7AF020000F8B1E090C7@prv1-mh.provo.novell.com>
[not found] ` <00FAE7AF020000F8B1E090C7@prv1-mh.provo.novell.com>
2019-01-31 15:05 ` [PATCH SpectreV1+L1TF v5 1/9] xen/evtchn: block speculative out-of-bound accesses Jan Beulich
2019-02-01 13:45 ` Norbert Manthey
2019-02-01 14:08 ` Jan Beulich
2019-02-05 13:42 ` Norbert Manthey
[not found] ` <00FA27AF020000F8B1E090C7@prv1-mh.provo.novell.com>
2019-01-31 16:05 ` [PATCH SpectreV1+L1TF v5 2/9] x86/vioapic: " Jan Beulich
2019-02-01 13:54 ` Norbert Manthey
[not found] ` <00F867AF020000F8B1E090C7@prv1-mh.provo.novell.com>
2019-01-31 16:19 ` [PATCH SpectreV1+L1TF v5 3/9] x86/hvm: " Jan Beulich
2019-01-31 20:02 ` Andrew Cooper
2019-02-01 8:23 ` Jan Beulich
2019-02-01 14:06 ` Norbert Manthey
2019-02-01 14:31 ` Jan Beulich
2019-02-01 14:05 ` Norbert Manthey
[not found] ` <0101A7AF020000F8B1E090C7@prv1-mh.provo.novell.com>
2019-01-31 16:35 ` [PATCH SpectreV1+L1TF v5 4/9] spec: add l1tf-barrier Jan Beulich
2019-02-05 14:23 ` Norbert Manthey
2019-02-05 14:43 ` Jan Beulich
2019-02-06 13:02 ` Norbert Manthey
2019-02-06 13:20 ` Jan Beulich
[not found] ` <0101E7AF020000F8B1E090C7@prv1-mh.provo.novell.com>
2019-01-31 17:05 ` [PATCH SpectreV1+L1TF v5 5/9] nospec: introduce evaluate_nospec Jan Beulich
2019-02-05 14:32 ` Norbert Manthey
2019-02-08 13:44 ` SpectreV1+L1TF Patch Series v6 Norbert Manthey
2019-02-08 13:44 ` [PATCH SpectreV1+L1TF v6 1/9] xen/evtchn: block speculative out-of-bound accesses Norbert Manthey
2019-02-08 13:44 ` [PATCH SpectreV1+L1TF v6 2/9] x86/vioapic: " Norbert Manthey
2019-02-08 13:44 ` [PATCH SpectreV1+L1TF v6 3/9] x86/hvm: " Norbert Manthey
2019-02-08 13:44 ` [PATCH SpectreV1+L1TF v6 4/9] spec: add l1tf-barrier Norbert Manthey
2019-02-08 13:44 ` [PATCH SpectreV1+L1TF v6 5/9] nospec: introduce evaluate_nospec Norbert Manthey
2019-02-08 13:44 ` [PATCH SpectreV1+L1TF v6 6/9] is_control_domain: block speculation Norbert Manthey
2019-02-08 13:44 ` [PATCH SpectreV1+L1TF v6 7/9] is_hvm/pv_domain: " Norbert Manthey
2019-02-08 13:44 ` [PATCH SpectreV1+L1TF v6 8/9] common/grant_table: block speculative out-of-bound accesses Norbert Manthey
2019-02-08 13:44 ` [PATCH SpectreV1+L1TF v6 9/9] common/memory: " Norbert Manthey
2019-02-08 14:32 ` SpectreV1+L1TF Patch Series v6 Julien Grall
[not found] ` <A18FF6C80200006BB1E090C7@prv1-mh.provo.novell.com>
[not found] ` <01CCAAAF02000039B1E090C7@prv1-mh.provo.novell.com>
[not found] ` <01CCEAAF02000039B1E090C7@prv1-mh.provo.novell.com>
2019-02-12 13:08 ` [PATCH SpectreV1+L1TF v6 1/9] xen/evtchn: block speculative out-of-bound accesses Jan Beulich
2019-02-14 13:10 ` Norbert Manthey
2019-02-14 13:20 ` Jan Beulich
[not found] ` <01CC2AAF02000039B1E090C7@prv1-mh.provo.novell.com>
2019-02-12 13:16 ` [PATCH SpectreV1+L1TF v6 2/9] x86/vioapic: " Jan Beulich
2019-02-14 13:16 ` Norbert Manthey
[not found] ` <01CE6AAF02000039B1E090C7@prv1-mh.provo.novell.com>
2019-02-12 13:25 ` [PATCH SpectreV1+L1TF v6 3/9] x86/hvm: " Jan Beulich
2019-02-12 14:05 ` Norbert Manthey
2019-02-12 14:14 ` Jan Beulich
2019-02-15 8:05 ` Norbert Manthey
2019-02-15 8:55 ` Jan Beulich
2019-02-15 10:50 ` Norbert Manthey
2019-02-15 11:46 ` Jan Beulich
2019-02-18 14:47 ` Norbert Manthey
2019-02-18 15:56 ` Jan Beulich
[not found] ` <01CFAAAF02000039B1E090C7@prv1-mh.provo.novell.com>
2019-02-12 13:44 ` [PATCH SpectreV1+L1TF v6 4/9] spec: add l1tf-barrier Jan Beulich
2019-02-15 9:13 ` Norbert Manthey
[not found] ` <01CFEAAF02000039B1E090C7@prv1-mh.provo.novell.com>
2019-02-12 13:50 ` [PATCH SpectreV1+L1TF v6 5/9] nospec: introduce evaluate_nospec Jan Beulich
2019-02-14 13:37 ` Norbert Manthey
2019-02-12 14:12 ` Jan Beulich
2019-02-14 13:42 ` Norbert Manthey
[not found] ` <01CF2AAF02000039B1E090C7@prv1-mh.provo.novell.com>
2019-02-12 14:11 ` [PATCH SpectreV1+L1TF v6 6/9] is_control_domain: block speculation Jan Beulich
2019-02-14 13:45 ` Norbert Manthey
[not found] ` <23D9419E02000017B1E090C7@prv1-mh.provo.novell.com>
2019-02-12 14:31 ` [PATCH SpectreV1+L1TF v6 9/9] common/memory: block speculative out-of-bound accesses Jan Beulich
2019-02-14 14:04 ` Norbert Manthey
[not found] ` <01CEAAAF02000039B1E090C7@prv1-mh.provo.novell.com>
2019-02-13 11:50 ` [PATCH SpectreV1+L1TF v6 8/9] common/grant_table: " Jan Beulich
2019-02-15 9:55 ` Norbert Manthey
2019-02-15 10:34 ` Jan Beulich
2019-02-18 13:49 ` Norbert Manthey
2019-02-18 16:08 ` Jan Beulich
2019-02-19 21:47 ` Norbert Manthey
[not found] ` <0104A7AF020000F8B1E090C7@prv1-mh.provo.novell.com>
2019-02-06 14:52 ` [PATCH SpectreV1+L1TF v5 " Jan Beulich
2019-02-06 15:06 ` Norbert Manthey
2019-02-06 15:53 ` Jan Beulich
2019-02-07 9:50 ` Norbert Manthey
2019-02-07 10:20 ` Norbert Manthey
2019-02-07 14:00 ` Jan Beulich
2019-02-07 16:20 ` Norbert Manthey
[not found] ` <010527AF020000F8B1E090C7@prv1-mh.provo.novell.com>
2019-02-06 15:03 ` [PATCH SpectreV1+L1TF v5 6/9] is_control_domain: block speculation Jan Beulich
2019-02-06 15:36 ` Norbert Manthey
2019-02-06 16:01 ` Jan Beulich
2019-02-07 10:02 ` Norbert Manthey
[not found] ` <20F3469E02000096B1E090C7@prv1-mh.provo.novell.com>
2019-02-06 15:25 ` [PATCH SpectreV1+L1TF v5 9/9] common/memory: block speculative out-of-bound accesses Jan Beulich
2019-02-06 15:39 ` Norbert Manthey
2019-02-06 16:08 ` Jan Beulich
2019-02-07 7:20 ` Norbert Manthey
2019-01-28 10:01 SpectreV1+L1TF Patch Series Juergen Gross
2019-01-29 14:43 ` SpectreV1+L1TF Patch Series v5 Norbert Manthey
2019-01-29 14:43 ` [PATCH SpectreV1+L1TF v5 1/9] xen/evtchn: block speculative out-of-bound accesses Norbert Manthey
2019-01-29 14:43 ` [PATCH SpectreV1+L1TF v5 2/9] x86/vioapic: " Norbert Manthey
2019-01-29 14:43 ` [PATCH SpectreV1+L1TF v5 3/9] x86/hvm: " Norbert Manthey
2019-01-29 14:43 ` [PATCH SpectreV1+L1TF v5 4/9] spec: add l1tf-barrier Norbert Manthey
2019-01-29 14:43 ` [PATCH SpectreV1+L1TF v5 5/9] nospec: introduce evaluate_nospec Norbert Manthey
2019-02-08 9:20 ` Julien Grall
2019-01-29 14:43 ` [PATCH SpectreV1+L1TF v5 6/9] is_control_domain: block speculation Norbert Manthey
2019-01-29 14:43 ` [PATCH SpectreV1+L1TF v5 7/9] is_hvm/pv_domain: " Norbert Manthey
2019-01-29 14:43 ` [PATCH SpectreV1+L1TF v5 8/9] common/grant_table: block speculative out-of-bound accesses Norbert Manthey
2019-01-29 14:43 ` [PATCH SpectreV1+L1TF v5 9/9] common/memory: " Norbert Manthey
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