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From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: stefanha@redhat.com,
=?UTF-8?q?Alex=20Benn=C3=A9e?= <alex.bennee@linaro.org>
Subject: [PULL 22/47] accel/tcg: Use tb_invalidate_phys_range in
page_set_flags
Date: Wed, 26 Oct 2022 12:10:51 +1000
Message-Id: <20221026021116.1988449-23-richard.henderson@linaro.org>
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Flush translation blocks in bulk, rather than page-by-page.
Reviewed-by: Alex Benn=C3=A9e <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
accel/tcg/translate-all.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/accel/tcg/translate-all.c b/accel/tcg/translate-all.c
index 41b6d5fe26..eea24dea96 100644
--- a/accel/tcg/translate-all.c
+++ b/accel/tcg/translate-all.c
@@ -1352,7 +1352,7 @@ int page_get_flags(target_ulong address)
void page_set_flags(target_ulong start, target_ulong end, int flags)
{
target_ulong addr, len;
- bool reset;
+ bool reset, inval_tb =3D false;
=20
/* This function should never be called with addresses outside the
guest address space. If this assert fires, it probably indicates
@@ -1388,11 +1388,15 @@ void page_set_flags(target_ulong start, target_ulon=
g end, int flags)
&& (reset ||
!(flags & PAGE_EXEC) ||
(flags & ~p->flags & PAGE_WRITE))) {
- tb_invalidate_phys_page(addr);
+ inval_tb =3D true;
}
/* Using mprotect on a page does not change sticky bits. */
p->flags =3D (reset ? 0 : p->flags & PAGE_STICKY) | flags;
}
+
+ if (inval_tb) {
+ tb_invalidate_phys_range(start, end);
+ }
}
=20
void page_reset_target_data(target_ulong start, target_ulong end)
--=20
2.34.1