for ram device regions, drop guest writes if the regions is read-only. Signed-off-by: Yan Zhao <yan.y.z...@intel.com> Signed-off-by: Xin Zeng <xin.z...@intel.com> --- memory.c | 6 +++++- trace-events | 2 +- 2 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/memory.c b/memory.c index 601b749906..a380b59980 100644 --- a/memory.c +++ b/memory.c @@ -1312,7 +1312,11 @@ static void memory_region_ram_device_write(void *opaque, hwaddr addr, { MemoryRegion *mr = opaque; - trace_memory_region_ram_device_write(get_cpu_index(), mr, addr, data, size); + trace_memory_region_ram_device_write(get_cpu_index(), mr, addr, data, + size, mr->readonly); + if (mr->readonly) { + return; + } switch (size) { case 1: diff --git a/trace-events b/trace-events index 42107ebc69..e1de662973 100644 --- a/trace-events +++ b/trace-events @@ -61,7 +61,7 @@ memory_region_ops_write(int cpu_index, void *mr, uint64_t addr, uint64_t value, memory_region_subpage_read(int cpu_index, void *mr, uint64_t offset, uint64_t value, unsigned size) "cpu %d mr %p offset 0x%"PRIx64" value 0x%"PRIx64" size %u" memory_region_subpage_write(int cpu_index, void *mr, uint64_t offset, uint64_t value, unsigned size) "cpu %d mr %p offset 0x%"PRIx64" value 0x%"PRIx64" size %u" memory_region_ram_device_read(int cpu_index, void *mr, uint64_t addr, uint64_t value, unsigned size) "cpu %d mr %p addr 0x%"PRIx64" value 0x%"PRIx64" size %u" -memory_region_ram_device_write(int cpu_index, void *mr, uint64_t addr, uint64_t value, unsigned size) "cpu %d mr %p addr 0x%"PRIx64" value 0x%"PRIx64" size %u" +memory_region_ram_device_write(int cpu_index, void *mr, uint64_t addr, uint64_t value, unsigned size, bool readonly) "cpu %d mr %p addr 0x%"PRIx64" value 0x%"PRIx64" size %u" " is_readonly_region=%d" flatview_new(void *view, void *root) "%p (root %p)" flatview_destroy(void *view, void *root) "%p (root %p)" flatview_destroy_rcu(void *view, void *root) "%p (root %p)" -- 2.17.1