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cputlb: Move NOTDIRTY handling from I/O path to TLB path

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Pages that we want to track for NOTDIRTY are RAM.  We do not
really need to go through the I/O path to handle them.

Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson
2019-09-18 09:15:44 -07:00
parent 7b0d792ce1
commit 08565552f7
4 changed files with 23 additions and 71 deletions
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16
memory.c
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@ -434,10 +434,6 @@ static MemTxResult memory_region_read_accessor(MemoryRegion *mr,
tmp = mr->ops->read(mr->opaque, addr, size);
if (mr->subpage) {
trace_memory_region_subpage_read(get_cpu_index(), mr, addr, tmp, size);
} else if (mr == &io_mem_notdirty) {
/* Accesses to code which has previously been translated into a TB show
* up in the MMIO path, as accesses to the io_mem_notdirty
* MemoryRegion. */
} else if (TRACE_MEMORY_REGION_OPS_READ_ENABLED) {
hwaddr abs_addr = memory_region_to_absolute_addr(mr, addr);
trace_memory_region_ops_read(get_cpu_index(), mr, abs_addr, tmp, size);
@ -460,10 +456,6 @@ static MemTxResult memory_region_read_with_attrs_accessor(MemoryRegion *mr,
r = mr->ops->read_with_attrs(mr->opaque, addr, &tmp, size, attrs);
if (mr->subpage) {
trace_memory_region_subpage_read(get_cpu_index(), mr, addr, tmp, size);
} else if (mr == &io_mem_notdirty) {
/* Accesses to code which has previously been translated into a TB show
* up in the MMIO path, as accesses to the io_mem_notdirty
* MemoryRegion. */
} else if (TRACE_MEMORY_REGION_OPS_READ_ENABLED) {
hwaddr abs_addr = memory_region_to_absolute_addr(mr, addr);
trace_memory_region_ops_read(get_cpu_index(), mr, abs_addr, tmp, size);
@ -484,10 +476,6 @@ static MemTxResult memory_region_write_accessor(MemoryRegion *mr,
if (mr->subpage) {
trace_memory_region_subpage_write(get_cpu_index(), mr, addr, tmp, size);
} else if (mr == &io_mem_notdirty) {
/* Accesses to code which has previously been translated into a TB show
* up in the MMIO path, as accesses to the io_mem_notdirty
* MemoryRegion. */
} else if (TRACE_MEMORY_REGION_OPS_WRITE_ENABLED) {
hwaddr abs_addr = memory_region_to_absolute_addr(mr, addr);
trace_memory_region_ops_write(get_cpu_index(), mr, abs_addr, tmp, size);
@ -508,10 +496,6 @@ static MemTxResult memory_region_write_with_attrs_accessor(MemoryRegion *mr,
if (mr->subpage) {
trace_memory_region_subpage_write(get_cpu_index(), mr, addr, tmp, size);
} else if (mr == &io_mem_notdirty) {
/* Accesses to code which has previously been translated into a TB show
* up in the MMIO path, as accesses to the io_mem_notdirty
* MemoryRegion. */
} else if (TRACE_MEMORY_REGION_OPS_WRITE_ENABLED) {
hwaddr abs_addr = memory_region_to_absolute_addr(mr, addr);
trace_memory_region_ops_write(get_cpu_index(), mr, abs_addr, tmp, size);