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From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: peter.maydell@linaro.org,
=?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= <philmd@linaro.org>
Subject: [PULL 03/15] linux-user: Diagnose misaligned -R size
Date: Tue, 28 Mar 2023 15:57:54 -0700
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We have been enforcing host page alignment for the non-R
fallback of MAX_RESERVED_VA, but failing to enforce for -R.
Reviewed-by: Philippe Mathieu-Daud=C3=A9 <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
linux-user/main.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/linux-user/main.c b/linux-user/main.c
index 4b18461969..39d9bd4d7a 100644
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -793,6 +793,12 @@ int main(int argc, char **argv, char **envp)
*/
max_reserved_va =3D MAX_RESERVED_VA(cpu);
if (reserved_va !=3D 0) {
+ if (reserved_va % qemu_host_page_size) {
+ char *s =3D size_to_str(qemu_host_page_size);
+ fprintf(stderr, "Reserved virtual address not aligned mod %s\n=
", s);
+ g_free(s);
+ exit(EXIT_FAILURE);
+ }
if (max_reserved_va && reserved_va > max_reserved_va) {
fprintf(stderr, "Reserved virtual address too big\n");
exit(EXIT_FAILURE);
--=20
2.34.1