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[PULL 3/3] intel_iommu: TM field should not be in reserved bits
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From: |
Michael S. Tsirkin |
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Subject: |
[PULL 3/3] intel_iommu: TM field should not be in reserved bits |
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Date: |
Mon, 25 Nov 2019 03:44:42 -0500 |
From: "Qi, Yadong" <address@hidden>
When dt is supported, TM field should not be Reserved(0).
Refer to VT-d Spec 9.8
Signed-off-by: Zhang, Qi <address@hidden>
Signed-off-by: Qi, Yadong <address@hidden>
Message-Id: <address@hidden>
Reviewed-by: Peter Xu <address@hidden>
Reviewed-by: Michael S. Tsirkin <address@hidden>
Signed-off-by: Michael S. Tsirkin <address@hidden>
---
hw/i386/intel_iommu.c | 9 ++++++---
hw/i386/intel_iommu_internal.h | 13 ++++++++++---
2 files changed, 16 insertions(+), 6 deletions(-)
diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c
index feb9e55f87..43c94b993b 100644
--- a/hw/i386/intel_iommu.c
+++ b/hw/i386/intel_iommu.c
@@ -3554,13 +3554,16 @@ static void vtd_init(IntelIOMMUState *s)
* Rsvd field masks for spte
*/
vtd_spte_rsvd[0] = ~0ULL;
- vtd_spte_rsvd[1] = VTD_SPTE_PAGE_L1_RSVD_MASK(s->aw_bits);
+ vtd_spte_rsvd[1] = VTD_SPTE_PAGE_L1_RSVD_MASK(s->aw_bits,
+ x86_iommu->dt_supported);
vtd_spte_rsvd[2] = VTD_SPTE_PAGE_L2_RSVD_MASK(s->aw_bits);
vtd_spte_rsvd[3] = VTD_SPTE_PAGE_L3_RSVD_MASK(s->aw_bits);
vtd_spte_rsvd[4] = VTD_SPTE_PAGE_L4_RSVD_MASK(s->aw_bits);
- vtd_spte_rsvd_large[2] = VTD_SPTE_LPAGE_L2_RSVD_MASK(s->aw_bits);
- vtd_spte_rsvd_large[3] = VTD_SPTE_LPAGE_L3_RSVD_MASK(s->aw_bits);
+ vtd_spte_rsvd_large[2] = VTD_SPTE_LPAGE_L2_RSVD_MASK(s->aw_bits,
+
x86_iommu->dt_supported);
+ vtd_spte_rsvd_large[3] = VTD_SPTE_LPAGE_L3_RSVD_MASK(s->aw_bits,
+
x86_iommu->dt_supported);
if (x86_iommu_ir_supported(x86_iommu)) {
s->ecap |= VTD_ECAP_IR | VTD_ECAP_MHMV;
diff --git a/hw/i386/intel_iommu_internal.h b/hw/i386/intel_iommu_internal.h
index 1654f746bc..edcf9fc9bb 100644
--- a/hw/i386/intel_iommu_internal.h
+++ b/hw/i386/intel_iommu_internal.h
@@ -387,7 +387,9 @@ 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) \
(0x800ULL | ~(VTD_HAW_MASK(aw) | VTD_SL_IGN_COM))
@@ -396,9 +398,13 @@ typedef union VTDInvDesc VTDInvDesc;
#define VTD_SPTE_PAGE_L4_RSVD_MASK(aw) \
(0x880ULL | ~(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))
/* Information about page-selective IOTLB invalidate */
@@ -503,5 +509,6 @@ 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
--
MST