On Tue, Jan 02, 2024 at 12:58:00PM +1100, Richard Henderson wrote:
> When guest page size > host page size, this test can fail
> due to the SIGBUS protection hack. Avoid this by making
> sure that the file size is at least one guest page.
Maybe also mention PAGE_PASSTHROUGH?
> Visible with alpha guest on x86_64 host.
I had to apply (very hacky):
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -803,7 +803,7 @@ int main(int argc, char **argv, char **envp)
* The most efficient setting is to match the host.
*/
host_page_size = qemu_real_host_page_size();
- set_preferred_target_page_bits(ctz32(host_page_size));
+ set_preferred_target_page_bits(ctz32(host_page_size) + 1);
finalize_target_page_bits();
in order to see this. Is there a way to set the guest page size from
the command line?
> Reviewed-by: Philippe Mathieu-Daudé <[email protected]>
> Signed-off-by: Richard Henderson <[email protected]>
> ---
> tests/tcg/multiarch/linux/linux-madvise.c | 2 ++
> 1 file changed, 2 insertions(+)
Reviewed-by: Ilya Leoshkevich <[email protected]>
