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[PATCH 3/4] VT-d: replace flush_all_cache()
- To: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Wed, 1 Dec 2021 10:41:13 +0100
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- Cc: Paul Durrant <paul@xxxxxxx>, Kevin Tian <kevin.tian@xxxxxxxxx>
- Delivery-date: Wed, 01 Dec 2021 09:41:24 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
Let's use infrastructure we have available instead of an open-coded
wbinvd() invocation.
Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
--- a/xen/drivers/passthrough/vtd/extern.h
+++ b/xen/drivers/passthrough/vtd/extern.h
@@ -76,8 +76,6 @@ int __must_check qinval_device_iotlb_syn
struct pci_dev *pdev,
u16 did, u16 size, u64 addr);
-void flush_all_cache(void);
-
uint64_t alloc_pgtable_maddr(unsigned long npages, nodeid_t node);
void free_pgtable_maddr(u64 maddr);
void *map_vtd_domain_page(u64 maddr);
--- a/xen/drivers/passthrough/vtd/iommu.c
+++ b/xen/drivers/passthrough/vtd/iommu.c
@@ -591,7 +591,8 @@ static int __must_check iommu_flush_all(
bool_t flush_dev_iotlb;
int rc = 0;
- flush_all_cache();
+ flush_local(FLUSH_CACHE);
+
for_each_drhd_unit ( drhd )
{
int context_rc, iotlb_rc;
--- a/xen/drivers/passthrough/vtd/x86/vtd.c
+++ b/xen/drivers/passthrough/vtd/x86/vtd.c
@@ -46,8 +46,3 @@ void unmap_vtd_domain_page(const void *v
{
unmap_domain_page(va);
}
-
-void flush_all_cache()
-{
- wbinvd();
-}
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