[v1] accel/tcg: Fix typo causing tb->page_addr[1] to not be recorded

[PATCH] accel/tcg: Fix typo causing tb->page_addr[1] to not be recorded

Anton Johansson via posted 1 patch 4 months, 1 week ago

Diff against v2 v3
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Patches applied successfully (tree, apply log)
git fetch https://github.com/patchew-project/qemu tags/patchew/20240611215814.32752-1-anjo@rev.ng

Maintainers: Richard Henderson <richard.henderson@linaro.org>, Paolo Bonzini <pbonzini@redhat.com>

There is a newer version of this series

accel/tcg/tb-maint.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

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[PATCH] accel/tcg: Fix typo causing tb->page_addr[1] to not be recorded

Posted by Anton Johansson via 4 months, 1 week ago

For TBs crossing page boundaries, the 2nd page will never be
recorded/removed, as the index of the 2nd page is computed from the
address of the 1st page. This is due to a typo, fix it.

Signed-off-by: Anton Johansson <anjo@rev.ng>
---
 accel/tcg/tb-maint.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/accel/tcg/tb-maint.c b/accel/tcg/tb-maint.c
index 19ae6793f3..cc0f5afd47 100644
--- a/accel/tcg/tb-maint.c
+++ b/accel/tcg/tb-maint.c
@@ -713,7 +713,7 @@ static void tb_record(TranslationBlock *tb)
     tb_page_addr_t paddr0 = tb_page_addr0(tb);
     tb_page_addr_t paddr1 = tb_page_addr1(tb);
     tb_page_addr_t pindex0 = paddr0 >> TARGET_PAGE_BITS;
-    tb_page_addr_t pindex1 = paddr0 >> TARGET_PAGE_BITS;
+    tb_page_addr_t pindex1 = paddr1 >> TARGET_PAGE_BITS;
 
     assert(paddr0 != -1);
     if (unlikely(paddr1 != -1) && pindex0 != pindex1) {
@@ -745,7 +745,7 @@ static void tb_remove(TranslationBlock *tb)
     tb_page_addr_t paddr0 = tb_page_addr0(tb);
     tb_page_addr_t paddr1 = tb_page_addr1(tb);
     tb_page_addr_t pindex0 = paddr0 >> TARGET_PAGE_BITS;
-    tb_page_addr_t pindex1 = paddr0 >> TARGET_PAGE_BITS;
+    tb_page_addr_t pindex1 = paddr1 >> TARGET_PAGE_BITS;
 
     assert(paddr0 != -1);
     if (unlikely(paddr1 != -1) && pindex0 != pindex1) {
-- 
2.45.0

Re: [PATCH] accel/tcg: Fix typo causing tb->page_addr[1] to not be recorded

Posted by Philippe Mathieu-Daudé 4 months, 1 week ago

On 11/6/24 23:58, Anton Johansson via wrote:
> For TBs crossing page boundaries, the 2nd page will never be
> recorded/removed, as the index of the 2nd page is computed from the
> address of the 1st page. This is due to a typo, fix it.

Cc: qemu-stable@nongnu.org
Fixes: deba78709a ("accel/tcg: Always lock pages before translation")

> Signed-off-by: Anton Johansson <anjo@rev.ng>
> ---
>   accel/tcg/tb-maint.c | 4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)

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

Re: [PATCH] accel/tcg: Fix typo causing tb->page_addr[1] to not be recorded

Posted by Manos Pitsidianakis 4 months, 1 week ago

On Wed, 12 Jun 2024 00:58, Anton Johansson via <qemu-devel@nongnu.org> wrote:
>For TBs crossing page boundaries, the 2nd page will never be
>recorded/removed, as the index of the 2nd page is computed from the
>address of the 1st page. This is due to a typo, fix it.
>
>Signed-off-by: Anton Johansson <anjo@rev.ng>
>---

Reviewed-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>