motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-04 08:13:54 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

accel/tcg: Simplify tlb_plugin_lookup

Browse source 
Now that we defer address space update and tlb_flush until
the next async_run_on_cpu, the plugin run at the end of the
instruction no longer has to contend with a flushed tlb.
Therefore, delete SavedIOTLB entirely.

Properly return false from tlb_plugin_lookup when we do
not have a tlb match.

Fixes a bug in which SavedIOTLB had stale data, because
there were multiple i/o accesses within a single insn.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2023-08-27 17:28:16 -07:00
parent e8967b6152
commit da6aef48d9
3 changed files with 23 additions and 70 deletions
Download patch file Download diff file Expand all files Collapse all files

13
include/hw/core/cpu.h
View file

@ -227,17 +227,6 @@ struct CPUWatchpoint {
QTAILQ_ENTRY(CPUWatchpoint) entry;
};
#ifdef CONFIG_PLUGIN
/*
* For plugins we sometime need to save the resolved iotlb data before
* the memory regions get moved around by io_writex.
*/
typedef struct SavedIOTLB {
MemoryRegionSection *section;
hwaddr mr_offset;
} SavedIOTLB;
#endif
struct KVMState;
struct kvm_run;
@ -409,8 +398,6 @@ struct CPUState {
#ifdef CONFIG_PLUGIN
GArray *plugin_mem_cbs;
/* saved iotlb data from io_writex */
SavedIOTLB saved_iotlb;
#endif
/* TODO Move common fields from CPUArchState here. */