[PATCH] s390x: intercept: fence one test when using TCG

[Claudio Imbrenda <imbrenda@linux.ibm.com>]

Qemu commit f8333de2793 ("target/s390x/tcg: SPX: check validity of new prefix")
fixes a TCG bug discovered with a new testcase in the intercept test.

The gitlab pipeline for the KVM unit tests uses TCG and it will keep
failing every time as long as the pipeline uses a version of Qemu
without the aforementioned patch.

Fence the specific testcase for now. Once the pipeline is fixed, this
patch can safely be reverted.

Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
---
 s390x/intercept.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/s390x/intercept.c b/s390x/intercept.c
index 54bed5a4..c48818c2 100644
--- a/s390x/intercept.c
+++ b/s390x/intercept.c
@@ -14,6 +14,7 @@
 #include <asm/page.h>
 #include <asm/facility.h>
 #include <asm/time.h>
+#include <hardware.h>
 
 static uint8_t pagebuf[PAGE_SIZE * 2] __attribute__((aligned(PAGE_SIZE * 2)));
 
@@ -76,7 +77,7 @@ static void test_spx(void)
 	check_pgm_int_code(PGM_INT_CODE_ADDRESSING);
 
 	new_prefix = get_ram_size() & 0x7fffe000;
-	if (get_ram_size() - new_prefix < 2 * PAGE_SIZE) {
+	if (!host_is_tcg() && (get_ram_size() - new_prefix < 2 * PAGE_SIZE)) {
 		expect_pgm_int();
 		asm volatile("spx	%0 " : : "Q"(new_prefix));
 		check_pgm_int_code(PGM_INT_CODE_ADDRESSING);
-- 
2.36.1