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Re: [Qemu-devel] [RFC 06/28] s390x/cpumodel: introduce CPU feature group
From: |
Thomas Huth |
Subject: |
Re: [Qemu-devel] [RFC 06/28] s390x/cpumodel: introduce CPU feature group definitions |
Date: |
Tue, 21 Jun 2016 22:14:30 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.8.0 |
On 21.06.2016 15:02, David Hildenbrand wrote:
> Let's use the generated groups to create feature group representations for
> the user. These groups can later be used to enable/disable multiple
> features in one shot and will be used to reduce the amount of reported
> features to the user if all subfeatures are in place.
>
> Acked-by: Cornelia Huck <address@hidden>
> Signed-off-by: David Hildenbrand <address@hidden>
> ---
> target-s390x/cpu_features.c | 44 +++++++++++++++++++++++++++++++++++++++++++-
> target-s390x/cpu_features.h | 23 +++++++++++++++++++++++
> 2 files changed, 66 insertions(+), 1 deletion(-)
>
> diff --git a/target-s390x/cpu_features.c b/target-s390x/cpu_features.c
> index c78a189..6ec2bfc 100644
> --- a/target-s390x/cpu_features.c
> +++ b/target-s390x/cpu_features.c
> @@ -12,6 +12,7 @@
>
> #include "qemu/osdep.h"
> #include "cpu_features.h"
> +#include "gen-features.h"
>
> #define FEAT_INIT(_name, _type, _bit, _desc) \
> { \
> @@ -321,14 +322,55 @@ void s390_add_from_feat_block(S390FeatBitmap features,
> S390FeatType type,
> }
> }
>
> -void s390_feat_bitmap_to_ascii(const S390FeatBitmap bitmap, void *opaque,
> +void s390_feat_bitmap_to_ascii(const S390FeatBitmap features, void *opaque,
> void (*fn)(const char *name, void *opaque))
> {
> + S390FeatBitmap bitmap, tmp;
> + S390FeatGroup group;
> S390Feat feat;
>
> + bitmap_copy(bitmap, features, S390_FEAT_MAX);
> +
> + /* process whole groups first */
> + for (group = 0; group < S390_FEAT_GROUP_MAX; group++) {
> + const S390FeatGroupDef *def = s390_feat_group_def(group);
> +
> + bitmap_and(tmp, bitmap, def->feat, S390_FEAT_MAX);
> + if (bitmap_equal(tmp, def->feat, S390_FEAT_MAX)) {
> + bitmap_andnot(bitmap, bitmap, def->feat, S390_FEAT_MAX);
> + (*fn)(def->name, opaque);
Maybe simply write
fn(dev->name, opaque);
instead?
Thomas
- [Qemu-devel] [RFC 08/28] s390x/cpumodel: store the CPU model in the CPU instance, (continued)
- [Qemu-devel] [RFC 08/28] s390x/cpumodel: store the CPU model in the CPU instance, David Hildenbrand, 2016/06/21
- [Qemu-devel] [RFC 05/28] s390x/cpumodel: generate CPU feature group lists, David Hildenbrand, 2016/06/21
- [Qemu-devel] [RFC 19/28] s390x/kvm: allow runtime-instrumentation for "none" machine, David Hildenbrand, 2016/06/21
- [Qemu-devel] [RFC 10/28] s390x/cpumodel: let the CPU model handle feature checks, David Hildenbrand, 2016/06/21
- [Qemu-devel] [RFC 14/28] s390x/sclp: indicate sclp features, David Hildenbrand, 2016/06/21
- [Qemu-devel] [RFC 13/28] s390x/sclp: introduce sclp feature blocks, David Hildenbrand, 2016/06/21
- [Qemu-devel] [RFC 04/28] s390x/cpumodel: generate CPU feature lists for CPU models, David Hildenbrand, 2016/06/21
- [Qemu-devel] [RFC 02/28] s390x/cpumodel: expose CPU class properties, David Hildenbrand, 2016/06/21
- [Qemu-devel] [RFC 23/28] qmp: add QMP interface "query-cpu-model-expansion", David Hildenbrand, 2016/06/21
- [Qemu-devel] [RFC 06/28] s390x/cpumodel: introduce CPU feature group definitions, David Hildenbrand, 2016/06/21
- Re: [Qemu-devel] [RFC 06/28] s390x/cpumodel: introduce CPU feature group definitions,
Thomas Huth <=
- [Qemu-devel] [RFC 12/28] s390x/sclp: factor out preparation of cpu entries, David Hildenbrand, 2016/06/21
- [Qemu-devel] [RFC 09/28] s390x/cpumodel: expose features and feature groups as properties, David Hildenbrand, 2016/06/21
- [Qemu-devel] [RFC 18/28] update linux headers (CPU model), David Hildenbrand, 2016/06/21
- [Qemu-devel] [RFC 24/28] qmp: add QMP interface "query-cpu-model-comparison", David Hildenbrand, 2016/06/21
- [Qemu-devel] [RFC 21/28] s390x/kvm: disable host model for existing compat machines, David Hildenbrand, 2016/06/21
- [Qemu-devel] [RFC 25/28] qmp: add QMP interface "query-cpu-model-baseline", David Hildenbrand, 2016/06/21
- [Qemu-devel] [RFC 17/28] s390x/sclp: propagate hmfai, David Hildenbrand, 2016/06/21
- [Qemu-devel] [RFC 16/28] s390x/sclp: propagate the mha via sclp, David Hildenbrand, 2016/06/21