Move to fill a hole in the set of bits.
Reduce the total number of tlb bits by 1.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 include/exec/cpu-all.h | 4 ++--
 tcg/tcg-op-ldst.c      | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/include/exec/cpu-all.h b/include/exec/cpu-all.h
index b5618613cc..8018ce783e 100644
--- a/include/exec/cpu-all.h
+++ b/include/exec/cpu-all.h
@@ -325,10 +325,10 @@ CPUArchState *cpu_copy(CPUArchState *env);
 #define TLB_NOTDIRTY        (1 << (TARGET_PAGE_BITS_MIN - 2))
 /* Set if TLB entry is an IO callback.  */
 #define TLB_MMIO            (1 << (TARGET_PAGE_BITS_MIN - 3))
+/* Set if TLB entry writes ignored.  */
+#define TLB_DISCARD_WRITE   (1 << (TARGET_PAGE_BITS_MIN - 4))
 /* Set if the slow path must be used; more flags in CPUTLBEntryFull. */
 #define TLB_FORCE_SLOW      (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
diff --git a/tcg/tcg-op-ldst.c b/tcg/tcg-op-ldst.c
index a4f51bfb6e..0fcc1618e5 100644
--- a/tcg/tcg-op-ldst.c
+++ b/tcg/tcg-op-ldst.c
@@ -39,7 +39,7 @@ static void check_max_alignment(unsigned a_bits)
      * The requested alignment cannot overlap the TLB flags.
      * FIXME: Must keep the count up-to-date with "exec/cpu-all.h".
      */
-    tcg_debug_assert(a_bits + 6 <= tcg_ctx->page_bits);
+    tcg_debug_assert(a_bits + 5 <= tcg_ctx->page_bits);
 #endif
 }
 
-- 
2.34.1

On 21/6/23 14:18, Richard Henderson wrote:
> Move to fill a hole in the set of bits.
> Reduce the total number of tlb bits by 1.
> 
> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
> ---
>   include/exec/cpu-all.h | 4 ++--
>   tcg/tcg-op-ldst.c      | 2 +-
>   2 files changed, 3 insertions(+), 3 deletions(-)

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>