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From: "Woods, Brian" <Brian.Woods@amd.com>
To: Andrew Cooper <andrew.cooper3@citrix.com>
Cc: "Woods, Brian" <Brian.Woods@amd.com>,
	"Roger Pau Monné" <roger.pau@citrix.com>,
	"Wei Liu" <wei.liu2@citrix.com>,
	"Jan Beulich" <JBeulich@suse.com>,
	Xen-devel <xen-devel@lists.xen.org>
Subject: Re: [PATCH 7/9] x86/amd: Support context switching legacy SSBD interface
Date: Tue, 4 Dec 2018 20:27:20 +0000	[thread overview]
Message-ID: <20181204202717.GF13738@amd.com> (raw)
In-Reply-To: <1543853902-6257-8-git-send-email-andrew.cooper3@citrix.com>

On Mon, Dec 03, 2018 at 04:18:20PM +0000, Andy Cooper wrote:
> It is critical that MSR_AMD64_LS_CFG is never modified outside of this
> function, to avoid trampling on sibling settings.
> 
> For now, pass in NULL from the boot paths and just set Xen's default.  Later
> patches will plumb in guest choices.  This now supercedes the older code which
> wrote to MSR_AMD64_LS_CFG once during boot.
> 
> Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>

Reviewed-by: Brian Woods <brian.woods@amd.com>

-- 
Brian Woods

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  reply	other threads:[~2018-12-04 20:27 UTC|newest]

Thread overview: 51+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-12-03 16:18 [PATCH 0/9] xen/amd: Support for guest MSR_VIRT_SPEC_CTRL support Andrew Cooper
2018-12-03 16:18 ` [PATCH 1/9] x86/spec-ctrl: Drop the bti= command line option Andrew Cooper
2018-12-04 16:19   ` Jan Beulich
2018-12-03 16:18 ` [PATCH 2/9] x86/cpuid: Drop the synthetic X86_FEATURE_XEN_IBPB Andrew Cooper
2018-12-04 16:21   ` Jan Beulich
2018-12-03 16:18 ` [PATCH 3/9] x86/cpuid: Extend the cpuid= command line option to support all named features Andrew Cooper
2018-12-04 16:28   ` Jan Beulich
2018-12-06 12:52   ` Wei Liu
2018-12-03 16:18 ` [PATCH 4/9] x86/amd: Introduce CPUID/MSR definitions for per-vcpu SSBD support Andrew Cooper
2018-12-04 16:06   ` Woods, Brian
2018-12-05 16:39   ` Jan Beulich
2018-12-05 17:50     ` Andrew Cooper
2018-12-06  8:49       ` Jan Beulich
2018-12-06 18:35         ` Andrew Cooper
2018-12-03 16:18 ` [PATCH 5/9] x86/amd: Probe for legacy SSBD interfaces on boot Andrew Cooper
2018-12-04 16:15   ` Woods, Brian
2018-12-05 16:50   ` Jan Beulich
2018-12-05 17:09     ` Andrew Cooper
2018-12-06  8:53       ` Jan Beulich
2018-12-06 10:59   ` Jan Beulich
2018-12-28 16:30     ` Andrew Cooper
2019-01-04  8:58       ` Jan Beulich
2018-12-03 16:18 ` [PATCH 6/9] x86/amd: Allocate resources to cope with LS_CFG being per-core on Fam17h Andrew Cooper
2018-12-04 16:38   ` Woods, Brian
2018-12-05 16:57   ` Jan Beulich
2018-12-05 17:05     ` Andrew Cooper
2018-12-06  8:54       ` Jan Beulich
2018-12-06 18:46         ` Andrew Cooper
2018-12-06 19:25           ` Woods, Brian
2018-12-07 10:17           ` Jan Beulich
2018-12-03 16:18 ` [PATCH 7/9] x86/amd: Support context switching legacy SSBD interface Andrew Cooper
2018-12-04 20:27   ` Woods, Brian [this message]
2018-12-06 10:51   ` Jan Beulich
2018-12-06 18:55     ` Andrew Cooper
2018-12-07 10:25       ` Jan Beulich
2018-12-03 16:18 ` [PATCH 8/9] x86/amd: Virtualise MSR_VIRT_SPEC_CTRL for guests Andrew Cooper
2018-12-04 21:35   ` Woods, Brian
2018-12-05  8:41     ` Jan Beulich
2018-12-05 19:09       ` Andrew Cooper
2018-12-06  8:59         ` Jan Beulich
2018-12-06 19:41       ` Woods, Brian
2018-12-06 10:55   ` Jan Beulich
2018-12-03 16:18 ` [PATCH 9/9] x86/amd: Offer MSR_VIRT_SPEC_CTRL to guests Andrew Cooper
2018-12-06 10:57   ` Jan Beulich
2018-12-03 16:24 ` [PATCH 0/9] xen/amd: Support for guest MSR_VIRT_SPEC_CTRL support Jan Beulich
2018-12-03 16:31   ` Andrew Cooper
2018-12-04  9:45     ` Jan Beulich
2018-12-04 11:26       ` Andrew Cooper
2018-12-04 12:45         ` Jan Beulich
2018-12-04 13:41           ` Andrew Cooper
2018-12-04 14:07             ` Jan Beulich

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