* [PATCH] libxc: Expose the MPX cpuid flag to guest
@ 2016-01-11 8:52 Liang Li
2016-01-11 9:05 ` Wei Liu
2016-01-11 16:03 ` Konrad Rzeszutek Wilk
0 siblings, 2 replies; 9+ messages in thread
From: Liang Li @ 2016-01-11 8:52 UTC (permalink / raw)
To: xen-devel
Cc: wei.liu2, ian.campbell, stefano.stabellini, Liang Li,
ian.jackson, jbeulich
If hardware support memory protect externsion, expose this feature
to guest by default. Users don't have to use a 'cpuid= ' option in
config file to turn it on.
Signed-off-by: Liang Li <liang.z.li@intel.com>
---
tools/libxc/xc_cpufeature.h | 1 +
tools/libxc/xc_cpuid_x86.c | 6 ++++++
2 files changed, 7 insertions(+)
diff --git a/tools/libxc/xc_cpufeature.h b/tools/libxc/xc_cpufeature.h
index c3ddc80..cda9305 100644
--- a/tools/libxc/xc_cpufeature.h
+++ b/tools/libxc/xc_cpufeature.h
@@ -137,6 +137,7 @@
#define X86_FEATURE_ERMS 9 /* Enhanced REP MOVSB/STOSB */
#define X86_FEATURE_INVPCID 10 /* Invalidate Process Context ID */
#define X86_FEATURE_RTM 11 /* Restricted Transactional Memory */
+#define X86_FEATURE_MPX 14 /* Memory Protection Extensions */
#define X86_FEATURE_RDSEED 18 /* RDSEED instruction */
#define X86_FEATURE_ADX 19 /* ADCX, ADOX instructions */
#define X86_FEATURE_SMAP 20 /* Supervisor Mode Access Protection */
diff --git a/tools/libxc/xc_cpuid_x86.c b/tools/libxc/xc_cpuid_x86.c
index 8882c01..4c88db4 100644
--- a/tools/libxc/xc_cpuid_x86.c
+++ b/tools/libxc/xc_cpuid_x86.c
@@ -423,6 +423,8 @@ static void xc_cpuid_hvm_policy(xc_interface *xch,
bitmaskof(X86_FEATURE_ERMS) |
bitmaskof(X86_FEATURE_INVPCID) |
bitmaskof(X86_FEATURE_RTM) |
+ ((info->xfeature_mask != 0) ?
+ bitmaskof(X86_FEATURE_MPX) : 0) |
bitmaskof(X86_FEATURE_RDSEED) |
bitmaskof(X86_FEATURE_ADX) |
bitmaskof(X86_FEATURE_SMAP) |
@@ -538,6 +540,7 @@ static void xc_cpuid_pv_policy(xc_interface *xch,
case 0x00000007:
if ( input[1] == 0 )
+ {
regs[1] &= (bitmaskof(X86_FEATURE_BMI1) |
bitmaskof(X86_FEATURE_HLE) |
bitmaskof(X86_FEATURE_AVX2) |
@@ -547,6 +550,9 @@ static void xc_cpuid_pv_policy(xc_interface *xch,
bitmaskof(X86_FEATURE_RDSEED) |
bitmaskof(X86_FEATURE_ADX) |
bitmaskof(X86_FEATURE_FSGSBASE));
+ if ( info->xfeature_mask == 0 )
+ clear_bit(X86_FEATURE_MPX, regs[1]);
+ }
else
regs[1] = 0;
regs[0] = regs[2] = regs[3] = 0;
--
1.9.1
^ permalink raw reply related [flat|nested] 9+ messages in thread
* Re: [PATCH] libxc: Expose the MPX cpuid flag to guest
2016-01-11 8:52 [PATCH] libxc: Expose the MPX cpuid flag to guest Liang Li
@ 2016-01-11 9:05 ` Wei Liu
2016-01-11 9:59 ` Andrew Cooper
2016-01-11 16:03 ` Konrad Rzeszutek Wilk
1 sibling, 1 reply; 9+ messages in thread
From: Wei Liu @ 2016-01-11 9:05 UTC (permalink / raw)
To: Liang Li
Cc: wei.liu2, ian.campbell, stefano.stabellini, ian.jackson,
xen-devel, jbeulich
On Mon, Jan 11, 2016 at 04:52:10PM +0800, Liang Li wrote:
> If hardware support memory protect externsion, expose this feature
> to guest by default. Users don't have to use a 'cpuid= ' option in
> config file to turn it on.
>
> Signed-off-by: Liang Li <liang.z.li@intel.com>
I will defer this to the x86 maintainers.
Wei.
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [PATCH] libxc: Expose the MPX cpuid flag to guest
2016-01-11 9:05 ` Wei Liu
@ 2016-01-11 9:59 ` Andrew Cooper
2016-01-11 10:07 ` Li, Liang Z
2016-02-23 8:57 ` Li, Liang Z
0 siblings, 2 replies; 9+ messages in thread
From: Andrew Cooper @ 2016-01-11 9:59 UTC (permalink / raw)
To: Wei Liu, Liang Li
Cc: xen-devel, ian.jackson, ian.campbell, jbeulich, stefano.stabellini
On 11/01/16 09:05, Wei Liu wrote:
> On Mon, Jan 11, 2016 at 04:52:10PM +0800, Liang Li wrote:
>> If hardware support memory protect externsion, expose this feature
>> to guest by default. Users don't have to use a 'cpuid= ' option in
>> config file to turn it on.
>>
>> Signed-off-by: Liang Li <liang.z.li@intel.com>
> I will defer this to the x86 maintainers.
Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>
Looks like the hypervisor side is all present.
~Andrew
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [PATCH] libxc: Expose the MPX cpuid flag to guest
2016-01-11 9:59 ` Andrew Cooper
@ 2016-01-11 10:07 ` Li, Liang Z
2016-02-23 8:57 ` Li, Liang Z
1 sibling, 0 replies; 9+ messages in thread
From: Li, Liang Z @ 2016-01-11 10:07 UTC (permalink / raw)
To: Andrew Cooper, Wei Liu
Cc: xen-devel, ian.jackson, ian.campbell, jbeulich, stefano.stabellini
> On 11/01/16 09:05, Wei Liu wrote:
> > On Mon, Jan 11, 2016 at 04:52:10PM +0800, Liang Li wrote:
> >> If hardware support memory protect extension, expose this feature to
> >> guest by default. Users don't have to use a 'cpuid= ' option in
> >> config file to turn it on.
> >>
> >> Signed-off-by: Liang Li <liang.z.li@intel.com>
> > I will defer this to the x86 maintainers.
>
> Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>
>
> Looks like the hypervisor side is all present.
>
Yes, Thanks for reviewing.
Liang
> ~Andrew
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [PATCH] libxc: Expose the MPX cpuid flag to guest
2016-01-11 8:52 [PATCH] libxc: Expose the MPX cpuid flag to guest Liang Li
2016-01-11 9:05 ` Wei Liu
@ 2016-01-11 16:03 ` Konrad Rzeszutek Wilk
2016-01-20 9:20 ` Li, Liang Z
1 sibling, 1 reply; 9+ messages in thread
From: Konrad Rzeszutek Wilk @ 2016-01-11 16:03 UTC (permalink / raw)
To: Liang Li
Cc: wei.liu2, ian.campbell, stefano.stabellini, ian.jackson,
xen-devel, jbeulich
On Mon, Jan 11, 2016 at 04:52:10PM +0800, Liang Li wrote:
> If hardware support memory protect externsion, expose this feature
extension
> to guest by default. Users don't have to use a 'cpuid= ' option in
> config file to turn it on.
>
> Signed-off-by: Liang Li <liang.z.li@intel.com>
> ---
> tools/libxc/xc_cpufeature.h | 1 +
> tools/libxc/xc_cpuid_x86.c | 6 ++++++
> 2 files changed, 7 insertions(+)
>
> diff --git a/tools/libxc/xc_cpufeature.h b/tools/libxc/xc_cpufeature.h
> index c3ddc80..cda9305 100644
> --- a/tools/libxc/xc_cpufeature.h
> +++ b/tools/libxc/xc_cpufeature.h
> @@ -137,6 +137,7 @@
> #define X86_FEATURE_ERMS 9 /* Enhanced REP MOVSB/STOSB */
> #define X86_FEATURE_INVPCID 10 /* Invalidate Process Context ID */
> #define X86_FEATURE_RTM 11 /* Restricted Transactional Memory */
> +#define X86_FEATURE_MPX 14 /* Memory Protection Extensions */
> #define X86_FEATURE_RDSEED 18 /* RDSEED instruction */
> #define X86_FEATURE_ADX 19 /* ADCX, ADOX instructions */
> #define X86_FEATURE_SMAP 20 /* Supervisor Mode Access Protection */
> diff --git a/tools/libxc/xc_cpuid_x86.c b/tools/libxc/xc_cpuid_x86.c
> index 8882c01..4c88db4 100644
> --- a/tools/libxc/xc_cpuid_x86.c
> +++ b/tools/libxc/xc_cpuid_x86.c
> @@ -423,6 +423,8 @@ static void xc_cpuid_hvm_policy(xc_interface *xch,
> bitmaskof(X86_FEATURE_ERMS) |
> bitmaskof(X86_FEATURE_INVPCID) |
> bitmaskof(X86_FEATURE_RTM) |
> + ((info->xfeature_mask != 0) ?
> + bitmaskof(X86_FEATURE_MPX) : 0) |
> bitmaskof(X86_FEATURE_RDSEED) |
> bitmaskof(X86_FEATURE_ADX) |
> bitmaskof(X86_FEATURE_SMAP) |
> @@ -538,6 +540,7 @@ static void xc_cpuid_pv_policy(xc_interface *xch,
>
> case 0x00000007:
> if ( input[1] == 0 )
> + {
> regs[1] &= (bitmaskof(X86_FEATURE_BMI1) |
> bitmaskof(X86_FEATURE_HLE) |
> bitmaskof(X86_FEATURE_AVX2) |
> @@ -547,6 +550,9 @@ static void xc_cpuid_pv_policy(xc_interface *xch,
> bitmaskof(X86_FEATURE_RDSEED) |
> bitmaskof(X86_FEATURE_ADX) |
> bitmaskof(X86_FEATURE_FSGSBASE));
> + if ( info->xfeature_mask == 0 )
> + clear_bit(X86_FEATURE_MPX, regs[1]);
> + }
> else
> regs[1] = 0;
> regs[0] = regs[2] = regs[3] = 0;
> --
> 1.9.1
>
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xen.org
> http://lists.xen.org/xen-devel
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [PATCH] libxc: Expose the MPX cpuid flag to guest
2016-01-11 16:03 ` Konrad Rzeszutek Wilk
@ 2016-01-20 9:20 ` Li, Liang Z
2016-03-01 18:02 ` Ian Jackson
0 siblings, 1 reply; 9+ messages in thread
From: Li, Liang Z @ 2016-01-20 9:20 UTC (permalink / raw)
To: Konrad Rzeszutek Wilk
Cc: wei.liu2, ian.campbell, stefano.stabellini, ian.jackson,
xen-devel, jbeulich
> Cc: wei.liu2@citrix.com; ian.campbell@citrix.com;
> stefano.stabellini@eu.citrix.com; ian.jackson@eu.citrix.com; xen-
> devel@lists.xen.org; jbeulich@suse.com
> Subject: Re: [Xen-devel] [PATCH] libxc: Expose the MPX cpuid flag to guest
>
> On Mon, Jan 11, 2016 at 04:52:10PM +0800, Liang Li wrote:
> > If hardware support memory protect externsion, expose this feature
>
> extension
Thanks!
Liang
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [PATCH] libxc: Expose the MPX cpuid flag to guest
2016-01-11 9:59 ` Andrew Cooper
2016-01-11 10:07 ` Li, Liang Z
@ 2016-02-23 8:57 ` Li, Liang Z
2016-02-29 17:10 ` Doug Goldstein
1 sibling, 1 reply; 9+ messages in thread
From: Li, Liang Z @ 2016-02-23 8:57 UTC (permalink / raw)
To: Andrew Cooper, Wei Liu
Cc: xen-devel, ian.jackson, ian.campbell, jbeulich, stefano.stabellini
> From: Andrew Cooper [mailto:andrew.cooper3@citrix.com]
> Sent: Monday, January 11, 2016 5:59 PM
> To: Wei Liu; Li, Liang Z
> Cc: ian.campbell@citrix.com; stefano.stabellini@eu.citrix.com;
> ian.jackson@eu.citrix.com; xen-devel@lists.xen.org; jbeulich@suse.com
> Subject: Re: [Xen-devel] [PATCH] libxc: Expose the MPX cpuid flag to guest
>
> On 11/01/16 09:05, Wei Liu wrote:
> > On Mon, Jan 11, 2016 at 04:52:10PM +0800, Liang Li wrote:
> >> If hardware support memory protect externsion, expose this feature to
> >> guest by default. Users don't have to use a 'cpuid= ' option in
> >> config file to turn it on.
> >>
> >> Signed-off-by: Liang Li <liang.z.li@intel.com>
> > I will defer this to the x86 maintainers.
>
> Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>
>
> Looks like the hypervisor side is all present.
>
> ~Andrew
Is there anyone who can help to make this patch merged? It's pending for a long time.
Liang
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [PATCH] libxc: Expose the MPX cpuid flag to guest
2016-02-23 8:57 ` Li, Liang Z
@ 2016-02-29 17:10 ` Doug Goldstein
0 siblings, 0 replies; 9+ messages in thread
From: Doug Goldstein @ 2016-02-29 17:10 UTC (permalink / raw)
To: Li, Liang Z, Andrew Cooper, Wei Liu
Cc: stefano.stabellini, ian.jackson, ian.campbell, jbeulich, xen-devel
[-- Attachment #1.1: Type: text/plain, Size: 1116 bytes --]
On 2/23/16 2:57 AM, Li, Liang Z wrote:
>> From: Andrew Cooper [mailto:andrew.cooper3@citrix.com]
>> Sent: Monday, January 11, 2016 5:59 PM
>> To: Wei Liu; Li, Liang Z
>> Cc: ian.campbell@citrix.com; stefano.stabellini@eu.citrix.com;
>> ian.jackson@eu.citrix.com; xen-devel@lists.xen.org; jbeulich@suse.com
>> Subject: Re: [Xen-devel] [PATCH] libxc: Expose the MPX cpuid flag to guest
>>
>> On 11/01/16 09:05, Wei Liu wrote:
>>> On Mon, Jan 11, 2016 at 04:52:10PM +0800, Liang Li wrote:
>>>> If hardware support memory protect externsion, expose this feature to
>>>> guest by default. Users don't have to use a 'cpuid= ' option in
>>>> config file to turn it on.
>>>>
>>>> Signed-off-by: Liang Li <liang.z.li@intel.com>
>>> I will defer this to the x86 maintainers.
>>
>> Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>
>>
>> Looks like the hypervisor side is all present.
>>
>> ~Andrew
>
> Is there anyone who can help to make this patch merged? It's pending for a long time.
>
> Liang
>
Ping on the behalf of Liang. This patch still applies cleanly.
--
Doug Goldstein
[-- Attachment #1.2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 959 bytes --]
[-- Attachment #2: Type: text/plain, Size: 126 bytes --]
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [PATCH] libxc: Expose the MPX cpuid flag to guest
2016-01-20 9:20 ` Li, Liang Z
@ 2016-03-01 18:02 ` Ian Jackson
0 siblings, 0 replies; 9+ messages in thread
From: Ian Jackson @ 2016-03-01 18:02 UTC (permalink / raw)
To: Li, Liang Z; +Cc: xen-devel, stefano.stabellini, wei.liu2, jbeulich
Li, Liang Z writes ("RE: [Xen-devel] [PATCH] libxc: Expose the MPX cpuid flag to guest"):
> > Cc: wei.liu2@citrix.com; ian.campbell@citrix.com;
> > stefano.stabellini@eu.citrix.com; ian.jackson@eu.citrix.com; xen-
> > devel@lists.xen.org; jbeulich@suse.com
> > Subject: Re: [Xen-devel] [PATCH] libxc: Expose the MPX cpuid flag to guest
> >
> > On Mon, Jan 11, 2016 at 04:52:10PM +0800, Liang Li wrote:
> > > If hardware support memory protect externsion, expose this feature
> >
> > extension
>
> Thanks!
Sorry for the delay. I have queued this patch and assuming that my
build test passes it will be pushed shortly.
Ian.
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel
^ permalink raw reply [flat|nested] 9+ messages in thread
end of thread, other threads:[~2016-03-01 18:02 UTC | newest]
Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2016-01-11 8:52 [PATCH] libxc: Expose the MPX cpuid flag to guest Liang Li
2016-01-11 9:05 ` Wei Liu
2016-01-11 9:59 ` Andrew Cooper
2016-01-11 10:07 ` Li, Liang Z
2016-02-23 8:57 ` Li, Liang Z
2016-02-29 17:10 ` Doug Goldstein
2016-01-11 16:03 ` Konrad Rzeszutek Wilk
2016-01-20 9:20 ` Li, Liang Z
2016-03-01 18:02 ` Ian Jackson
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.