diff options
| author | Richard Henderson <richard.henderson@linaro.org> | 2019-09-19 17:54:10 -0700 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2019-09-25 10:42:51 -0700 |
| commit | 7b0d792ce13c0e894ee32a94b321b329724c9a25 (patch) | |
| tree | 33af9d48755e45cc700a0a3a9963737ccb5084b4 /include/exec | |
| parent | 6e050d415662ca97b71410b8c4d91f789872b407 (diff) | |
cputlb: Move ROM handling from I/O path to TLB path
It does not require going through the whole I/O path
in order to discard a write.
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'include/exec')
| -rw-r--r-- | include/exec/cpu-all.h | 5 | ||||
| -rw-r--r-- | include/exec/cpu-common.h | 1 |
2 files changed, 4 insertions, 2 deletions
diff --git a/include/exec/cpu-all.h b/include/exec/cpu-all.h index d148bded35..ad9ab85eb3 100644 --- a/include/exec/cpu-all.h +++ b/include/exec/cpu-all.h @@ -337,12 +337,15 @@ CPUArchState *cpu_copy(CPUArchState *env); #define TLB_WATCHPOINT (1 << (TARGET_PAGE_BITS_MIN - 4)) /* Set if TLB entry requires byte swap. */ #define TLB_BSWAP (1 << (TARGET_PAGE_BITS_MIN - 5)) +/* Set if TLB entry writes ignored. */ +#define TLB_DISCARD_WRITE (1 << (TARGET_PAGE_BITS_MIN - 6)) /* Use this mask to check interception with an alignment mask * in a TCG backend. */ #define TLB_FLAGS_MASK \ - (TLB_INVALID_MASK | TLB_NOTDIRTY | TLB_MMIO | TLB_WATCHPOINT | TLB_BSWAP) + (TLB_INVALID_MASK | TLB_NOTDIRTY | TLB_MMIO \ + | TLB_WATCHPOINT | TLB_BSWAP | TLB_DISCARD_WRITE) /** * tlb_hit_page: return true if page aligned @addr is a hit against the diff --git a/include/exec/cpu-common.h b/include/exec/cpu-common.h index f7dbe75fbc..1c0e03ddc2 100644 --- a/include/exec/cpu-common.h +++ b/include/exec/cpu-common.h @@ -100,7 +100,6 @@ void qemu_flush_coalesced_mmio_buffer(void); void cpu_flush_icache_range(hwaddr start, hwaddr len); -extern struct MemoryRegion io_mem_rom; extern struct MemoryRegion io_mem_notdirty; typedef int (RAMBlockIterFunc)(RAMBlock *rb, void *opaque); |