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linux-user: Diagnose misaligned -R size

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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-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson
2023-03-06 20:38:30 -08:00
parent 1ff4a81bd3
commit 2f7828b572
1 changed files with 6 additions and 0 deletions
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6
linux-user/main.c
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@@ -793,6 +793,12 @@ int main(int argc, char **argv, char **envp)
*/ */
max_reserved_va = MAX_RESERVED_VA(cpu); max_reserved_va = MAX_RESERVED_VA(cpu);
if (reserved_va != 0) { if (reserved_va != 0) {
if (reserved_va % qemu_host_page_size) {
char *s = 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) { if (max_reserved_va && reserved_va > max_reserved_va) {
fprintf(stderr, "Reserved virtual address too big\n"); fprintf(stderr, "Reserved virtual address too big\n");
exit(EXIT_FAILURE); exit(EXIT_FAILURE);