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[Qemu-devel] [PATCH v2 06/10] intel-iommu: pass in address space when pa
From: |
Peter Xu |
Subject: |
[Qemu-devel] [PATCH v2 06/10] intel-iommu: pass in address space when page walk |
Date: |
Fri, 4 May 2018 11:08:07 +0800 |
We pass in the VTDAddressSpace to replace the aw bits when doing page
walk. The VTDAddressSpace contains the aw bits information, meanwhile
we'll need to do something more in the follow up patches regarding to
the address spaces.
Signed-off-by: Peter Xu <address@hidden>
---
hw/i386/intel_iommu.c | 20 +++++++++++---------
1 file changed, 11 insertions(+), 9 deletions(-)
diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c
index b2b2a0a441..83769f2b8c 100644
--- a/hw/i386/intel_iommu.c
+++ b/hw/i386/intel_iommu.c
@@ -753,13 +753,13 @@ typedef int (*vtd_page_walk_hook)(IOMMUTLBEntry *entry,
void *private);
* @hook_fn: hook func to be called when detected page
* @private: private data to be passed into hook func
* @notify_unmap: whether we should notify invalid entries
- * @aw: maximum address width
+ * @as: VT-d address space of the device
*/
typedef struct {
+ VTDAddressSpace *as;
vtd_page_walk_hook hook_fn;
void *private;
bool notify_unmap;
- uint8_t aw;
} vtd_page_walk_info;
static int vtd_page_walk_one(IOMMUTLBEntry *entry, int level,
@@ -796,6 +796,7 @@ static int vtd_page_walk_level(dma_addr_t addr, uint64_t
start,
uint64_t iova = start;
uint64_t iova_next;
int ret = 0;
+ uint8_t aw = info->as->iommu_state->aw_bits;
trace_vtd_page_walk_level(addr, level, start, end);
@@ -836,7 +837,7 @@ static int vtd_page_walk_level(dma_addr_t addr, uint64_t
start,
if (vtd_is_last_slpte(slpte, level)) {
/* NOTE: this is only meaningful if entry_valid == true */
- entry.translated_addr = vtd_get_slpte_addr(slpte, info->aw);
+ entry.translated_addr = vtd_get_slpte_addr(slpte, aw);
if (!entry_valid && !info->notify_unmap) {
trace_vtd_page_walk_skip_perm(iova, iova_next);
goto next;
@@ -862,7 +863,7 @@ static int vtd_page_walk_level(dma_addr_t addr, uint64_t
start,
}
goto next;
}
- ret = vtd_page_walk_level(vtd_get_slpte_addr(slpte, info->aw),
+ ret = vtd_page_walk_level(vtd_get_slpte_addr(slpte, aw),
iova, MIN(iova_next, end), level - 1,
read_cur, write_cur, info);
if (ret < 0) {
@@ -885,19 +886,20 @@ next:
* @end: IOVA range end address (start <= addr < end)
* @hook_fn: the hook that to be called for each detected area
* @private: private data for the hook function
- * @aw: maximum address width
+ * @as: the VT-d address space of the device
*/
static int vtd_page_walk(VTDContextEntry *ce, uint64_t start, uint64_t end,
vtd_page_walk_hook hook_fn, void *private,
- bool notify_unmap, uint8_t aw)
+ bool notify_unmap, VTDAddressSpace *as)
{
dma_addr_t addr = vtd_ce_get_slpt_base(ce);
uint32_t level = vtd_ce_get_level(ce);
+ uint8_t aw = as->iommu_state->aw_bits;
vtd_page_walk_info info = {
.hook_fn = hook_fn,
.private = private,
.notify_unmap = notify_unmap,
- .aw = aw,
+ .as = as,
};
if (!vtd_iova_range_check(start, ce, aw)) {
@@ -1470,7 +1472,7 @@ static void
vtd_iotlb_page_invalidate_notify(IntelIOMMUState *s,
*/
vtd_page_walk(&ce, addr, addr + size,
vtd_page_invalidate_notify_hook,
- (void *)&vtd_as->iommu, true, s->aw_bits);
+ (void *)&vtd_as->iommu, true, vtd_as);
} else {
/*
* For UNMAP-only notifiers, we don't need to walk the
@@ -2941,7 +2943,7 @@ static void vtd_iommu_replay(IOMMUMemoryRegion *iommu_mr,
IOMMUNotifier *n)
if (vtd_as_notify_mappings(vtd_as)) {
/* This is required only for MAP typed notifiers */
vtd_page_walk(&ce, 0, ~0ULL, vtd_replay_hook, (void *)n, false,
- s->aw_bits);
+ vtd_as);
}
} else {
trace_vtd_replay_ce_invalid(bus_n, PCI_SLOT(vtd_as->devfn),
--
2.17.0
- Re: [Qemu-devel] [PATCH v2 04/10] intel-iommu: only do page walk for MAP notifiers, (continued)
[Qemu-devel] [PATCH v2 03/10] intel-iommu: add iommu lock, Peter Xu, 2018/05/03
[Qemu-devel] [PATCH v2 05/10] intel-iommu: introduce vtd_page_walk_info, Peter Xu, 2018/05/03
[Qemu-devel] [PATCH v2 06/10] intel-iommu: pass in address space when page walk,
Peter Xu <=
[Qemu-devel] [PATCH v2 07/10] util: implement simple interval tree logic, Peter Xu, 2018/05/03
[Qemu-devel] [PATCH v2 08/10] intel-iommu: maintain per-device iova ranges, Peter Xu, 2018/05/03
[Qemu-devel] [PATCH v2 09/10] intel-iommu: don't unmap all for shadow page table, Peter Xu, 2018/05/03
[Qemu-devel] [PATCH v2 10/10] intel-iommu: remove notify_unmap for page walk, Peter Xu, 2018/05/03
Re: [Qemu-devel] [PATCH v2 00/10] intel-iommu: nested vIOMMU, cleanups, bug fixes, no-reply, 2018/05/03