From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Liu, Yi L" Subject: [RFC PATCH 01/20] intel_iommu: add "ecs" option Date: Wed, 26 Apr 2017 18:06:31 +0800 Message-ID: <1493201210-14357-2-git-send-email-yi.l.liu@linux.intel.com> References: <1493201210-14357-1-git-send-email-yi.l.liu@linux.intel.com> Return-path: In-Reply-To: <1493201210-14357-1-git-send-email-yi.l.liu@linux.intel.com> Sender: kvm-owner@vger.kernel.org To: qemu-devel@nongnu.org, alex.williamson@redhat.com, peterx@redhat.com Cc: kvm@vger.kernel.org, jasowang@redhat.com, iommu@lists.linux-foundation.org, kevin.tian@intel.com, ashok.raj@intel.com, jacob.jun.pan@intel.com, tianyu.lan@intel.com, yi.l.liu@intel.com, jean-philippe.brucker@arm.com, "Liu, Yi L" List-Id: iommu@lists.linux-foundation.org Report ecap.ECS=1 to guest by "-deivce intel-iommu, ecs=on" in QEMU Cmd Signed-off-by: Liu, Yi L --- hw/i386/intel_iommu.c | 5 +++++ hw/i386/intel_iommu_internal.h | 1 + include/hw/i386/intel_iommu.h | 1 + 3 files changed, 7 insertions(+) diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index 4b7d90d..400d0d1 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -2409,6 +2409,7 @@ static Property vtd_properties[] = { ON_OFF_AUTO_AUTO), DEFINE_PROP_BOOL("x-buggy-eim", IntelIOMMUState, buggy_eim, false), DEFINE_PROP_BOOL("caching-mode", IntelIOMMUState, caching_mode, FALSE), + DEFINE_PROP_BOOL("ecs", IntelIOMMUState, ecs, FALSE), DEFINE_PROP_END_OF_LIST(), }; @@ -2925,6 +2926,10 @@ static void vtd_init(IntelIOMMUState *s) s->ecap |= VTD_ECAP_PT; } + if (s->ecs) { + s->ecap |= VTD_ECAP_ECS; + } + if (s->caching_mode) { s->cap |= VTD_CAP_CM; } diff --git a/hw/i386/intel_iommu_internal.h b/hw/i386/intel_iommu_internal.h index b96884e..ec1bd17 100644 --- a/hw/i386/intel_iommu_internal.h +++ b/hw/i386/intel_iommu_internal.h @@ -190,6 +190,7 @@ #define VTD_ECAP_EIM (1ULL << 4) #define VTD_ECAP_PT (1ULL << 6) #define VTD_ECAP_MHMV (15ULL << 20) +#define VTD_ECAP_ECS (1ULL << 24) /* CAP_REG */ /* (offset >> 4) << 24 */ diff --git a/include/hw/i386/intel_iommu.h b/include/hw/i386/intel_iommu.h index 3e51876..fa5963e 100644 --- a/include/hw/i386/intel_iommu.h +++ b/include/hw/i386/intel_iommu.h @@ -266,6 +266,7 @@ struct IntelIOMMUState { uint32_t version; bool caching_mode; /* RO - is cap CM enabled? */ + bool ecs; /* Extended Context Support */ dma_addr_t root; /* Current root table pointer */ bool root_extended; /* Type of root table (extended or not) */ -- 1.9.1