From: Davidlohr Bueso <[email protected]> The default CXL Fixed Memory Window restrictions advertised host-only coherent together with Back-Invalidate. A window advertising both simultaneously is undefined behavior per CXL r4.0 9.18.1.3.
Drop Back-Invalidate from the default, leaving device-coherent + host-only + volatile + persistent. Signed-off-by: Davidlohr Bueso <[email protected]> Reviewed-by: Michael S. Tsirkin <[email protected]> Signed-off-by: Michael S. Tsirkin <[email protected]> Message-ID: <[email protected]> --- hw/acpi/cxl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/acpi/cxl.c b/hw/acpi/cxl.c index f92f7fa3d5..75edb2c0a6 100644 --- a/hw/acpi/cxl.c +++ b/hw/acpi/cxl.c @@ -172,7 +172,7 @@ static void cedt_build_cfmws(CXLFixedWindow *fw, Aml *cedt) build_append_int_noprefix(table_data, fw->enc_int_gran, 4); /* Window Restrictions */ - build_append_int_noprefix(table_data, 0x2f, 2); + build_append_int_noprefix(table_data, 0x0f, 2); /* QTG ID */ build_append_int_noprefix(table_data, 0, 2); -- MST
