From bb8e3ea6fa8f616678133c9e8c8c3bf232c179ec Mon Sep 17 00:00:00 2001
From: Richard Henderson <richard.henderson@linaro.org>
Date: Fri, 13 Sep 2019 12:07:40 -0400
Subject: exec: Cache TARGET_PAGE_MASK for TARGET_PAGE_BITS_VARY
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This eliminates a set of runtime shifts.  It turns out that we
require TARGET_PAGE_MASK more often than TARGET_PAGE_SIZE, so
redefine TARGET_PAGE_SIZE based on TARGET_PAGE_MASK instead of
the other way around.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 exec-vary.c | 1 +
 1 file changed, 1 insertion(+)

(limited to 'exec-vary.c')

diff --git a/exec-vary.c b/exec-vary.c
index 8725fd0285..ff905f2a8f 100644
--- a/exec-vary.c
+++ b/exec-vary.c
@@ -96,6 +96,7 @@ void finalize_target_page_bits(void)
     if (init_target_page.bits == 0) {
         init_target_page.bits = TARGET_PAGE_BITS_MIN;
     }
+    init_target_page.mask = (target_long)-1 << init_target_page.bits;
     init_target_page.decided = true;
 
     /*
-- 
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