From: qi1.zhang@intel.com
To: qemu-devel@nongnu.org
Cc: qi1.zhang@intel.com, ehabkost@redhat.com, mst@redhat.com,
pbonzini@redhat.com, rth@twiddle.net
Subject: [PATCH V2] intel_iommu: TM field should not be in reserved bits
Date: Fri, 27 Sep 2019 12:58:38 +0800 [thread overview]
Message-ID: <20190927045838.2968-1-qi1.zhang@intel.com> (raw)
From: "Zhang, Qi" <qi1.zhang@intel.com>
When dt is supported, TM field should not be Reserved(0).
Refer to VT-d Spec 9.8
Signed-off-by: Zhang, Qi <qi1.zhang@intel.com>
Signed-off-by: Qi, Yadong <yadong.qi@intel.com>
---
hw/i386/intel_iommu.c | 12 ++++++------
hw/i386/intel_iommu_internal.h | 25 +++++++++++++++++++------
2 files changed, 25 insertions(+), 12 deletions(-)
---
Changelog V2:
move dt_supported flag to VTD_SPTE_PAGE_LX_RSVD_MASK and VTD_SPTE_LPAGE_LX_RSVD_MASK
diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c
index f1de8fdb75..35222cf55c 100644
--- a/hw/i386/intel_iommu.c
+++ b/hw/i386/intel_iommu.c
@@ -3548,13 +3548,13 @@ static void vtd_init(IntelIOMMUState *s)
* Rsvd field masks for spte
*/
vtd_paging_entry_rsvd_field[0] = ~0ULL;
- vtd_paging_entry_rsvd_field[1] = VTD_SPTE_PAGE_L1_RSVD_MASK(s->aw_bits);
- vtd_paging_entry_rsvd_field[2] = VTD_SPTE_PAGE_L2_RSVD_MASK(s->aw_bits);
- vtd_paging_entry_rsvd_field[3] = VTD_SPTE_PAGE_L3_RSVD_MASK(s->aw_bits);
+ vtd_paging_entry_rsvd_field[1] = VTD_SPTE_PAGE_L1_RSVD_MASK(s->aw_bits, x86_iommu->dt_supported);
+ vtd_paging_entry_rsvd_field[2] = VTD_SPTE_PAGE_L2_RSVD_MASK(s->aw_bits, x86_iommu->dt_supported);
+ vtd_paging_entry_rsvd_field[3] = VTD_SPTE_PAGE_L3_RSVD_MASK(s->aw_bits, x86_iommu->dt_supported);
vtd_paging_entry_rsvd_field[4] = VTD_SPTE_PAGE_L4_RSVD_MASK(s->aw_bits);
- vtd_paging_entry_rsvd_field[5] = VTD_SPTE_LPAGE_L1_RSVD_MASK(s->aw_bits);
- vtd_paging_entry_rsvd_field[6] = VTD_SPTE_LPAGE_L2_RSVD_MASK(s->aw_bits);
- vtd_paging_entry_rsvd_field[7] = VTD_SPTE_LPAGE_L3_RSVD_MASK(s->aw_bits);
+ vtd_paging_entry_rsvd_field[5] = VTD_SPTE_LPAGE_L1_RSVD_MASK(s->aw_bits, x86_iommu->dt_supported);
+ vtd_paging_entry_rsvd_field[6] = VTD_SPTE_LPAGE_L2_RSVD_MASK(s->aw_bits, x86_iommu->dt_supported);
+ vtd_paging_entry_rsvd_field[7] = VTD_SPTE_LPAGE_L3_RSVD_MASK(s->aw_bits, x86_iommu->dt_supported);
vtd_paging_entry_rsvd_field[8] = VTD_SPTE_LPAGE_L4_RSVD_MASK(s->aw_bits);
if (x86_iommu_ir_supported(x86_iommu)) {
diff --git a/hw/i386/intel_iommu_internal.h b/hw/i386/intel_iommu_internal.h
index c1235a7063..01f1aa6c86 100644
--- a/hw/i386/intel_iommu_internal.h
+++ b/hw/i386/intel_iommu_internal.h
@@ -387,19 +387,31 @@ typedef union VTDInvDesc VTDInvDesc;
#define VTD_INV_DESC_DEVICE_IOTLB_RSVD_LO 0xffff0000ffe0fff8
/* Rsvd field masks for spte */
-#define VTD_SPTE_PAGE_L1_RSVD_MASK(aw) \
+#define VTD_SPTE_PAGE_L1_RSVD_MASK(aw, dt_supported) \
+ dt_supported? \
+ (0x800ULL | ~(VTD_HAW_MASK(aw) | VTD_SL_IGN_COM | VTD_SL_TM)) : \
(0x800ULL | ~(VTD_HAW_MASK(aw) | VTD_SL_IGN_COM))
-#define VTD_SPTE_PAGE_L2_RSVD_MASK(aw) \
+#define VTD_SPTE_PAGE_L2_RSVD_MASK(aw, dt_supported) \
+ dt_supported? \
+ (0x800ULL | ~(VTD_HAW_MASK(aw) | VTD_SL_IGN_COM | VTD_SL_TM)) : \
(0x800ULL | ~(VTD_HAW_MASK(aw) | VTD_SL_IGN_COM))
-#define VTD_SPTE_PAGE_L3_RSVD_MASK(aw) \
+#define VTD_SPTE_PAGE_L3_RSVD_MASK(aw, dt_supported) \
+ dt_supported? \
+ (0x800ULL | ~(VTD_HAW_MASK(aw) | VTD_SL_IGN_COM | VTD_SL_TM)) : \
(0x800ULL | ~(VTD_HAW_MASK(aw) | VTD_SL_IGN_COM))
#define VTD_SPTE_PAGE_L4_RSVD_MASK(aw) \
(0x880ULL | ~(VTD_HAW_MASK(aw) | VTD_SL_IGN_COM))
-#define VTD_SPTE_LPAGE_L1_RSVD_MASK(aw) \
+#define VTD_SPTE_LPAGE_L1_RSVD_MASK(aw, dt_supported) \
+ dt_supported? \
+ (0x800ULL | ~(VTD_HAW_MASK(aw) | VTD_SL_IGN_COM | VTD_SL_TM)) : \
(0x800ULL | ~(VTD_HAW_MASK(aw) | VTD_SL_IGN_COM))
-#define VTD_SPTE_LPAGE_L2_RSVD_MASK(aw) \
+#define VTD_SPTE_LPAGE_L2_RSVD_MASK(aw, dt_supported) \
+ dt_supported? \
+ (0x1ff800ULL | ~(VTD_HAW_MASK(aw) | VTD_SL_IGN_COM | VTD_SL_TM)) : \
(0x1ff800ULL | ~(VTD_HAW_MASK(aw) | VTD_SL_IGN_COM))
-#define VTD_SPTE_LPAGE_L3_RSVD_MASK(aw) \
+#define VTD_SPTE_LPAGE_L3_RSVD_MASK(aw, dt_supported) \
+ dt_supported? \
+ (0x3ffff800ULL | ~(VTD_HAW_MASK(aw) | VTD_SL_IGN_COM | VTD_SL_TM)) : \
(0x3ffff800ULL | ~(VTD_HAW_MASK(aw) | VTD_SL_IGN_COM))
#define VTD_SPTE_LPAGE_L4_RSVD_MASK(aw) \
(0x880ULL | ~(VTD_HAW_MASK(aw) | VTD_SL_IGN_COM))
@@ -506,5 +518,6 @@ typedef struct VTDRootEntry VTDRootEntry;
#define VTD_SL_W (1ULL << 1)
#define VTD_SL_PT_BASE_ADDR_MASK(aw) (~(VTD_PAGE_SIZE - 1) & VTD_HAW_MASK(aw))
#define VTD_SL_IGN_COM 0xbff0000000000000ULL
+#define VTD_SL_TM (1ULL << 62)
#endif
--
2.20.1
next reply other threads:[~2019-09-27 5:10 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-27 4:58 qi1.zhang [this message]
2019-09-27 6:10 ` [PATCH V2] intel_iommu: TM field should not be in reserved bits Peter Xu
2019-09-27 8:03 ` Zhang, Qi1
2019-09-27 9:32 ` Peter Xu
2019-09-29 1:11 ` Zhang, Qi1
2019-09-29 2:02 ` Peter Xu
2019-09-29 2:10 ` Zhang, Qi1
2019-09-29 2:19 ` Peter Xu
2019-09-27 9:33 ` Michael S. Tsirkin
2019-09-27 20:44 ` no-reply
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