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-rw-r--r--include/hw/pci/pci.h11
1 files changed, 9 insertions, 2 deletions
diff --git a/include/hw/pci/pci.h b/include/hw/pci/pci.h
index ef6ba51f6c..4420f47598 100644
--- a/include/hw/pci/pci.h
+++ b/include/hw/pci/pci.h
@@ -465,16 +465,23 @@ pci_get_long(const uint8_t *config)
return ldl_le_p(config);
}
+/*
+ * PCI capabilities and/or their fields
+ * are generally DWORD aligned only so
+ * mechanism used by pci_set/get_quad()
+ * must be tolerant to unaligned pointers
+ *
+ */
static inline void
pci_set_quad(uint8_t *config, uint64_t val)
{
- cpu_to_le64w((uint64_t *)config, val);
+ stq_le_p(config, val);
}
static inline uint64_t
pci_get_quad(const uint8_t *config)
{
- return le64_to_cpup((const uint64_t *)config);
+ return ldq_le_p(config);
}
static inline void