From: Maxim Levitsky Date: Sat, 11 Jan 2025 00:29:52 +0000 (-0800) Subject: KVM: selftests: Limit dirty_log_test's s390x workaround to s390x X-Git-Tag: v6.15-rc1~195^2~8^2~22 X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=deb8b8400e31505e0c151dcc4cf436863df4f8d9;p=linux.git KVM: selftests: Limit dirty_log_test's s390x workaround to s390x s390 specific workaround causes the dirty-log mode of the test to dirty all guest memory on the first iteration, which is very slow when the test is run in a nested VM. Limit this workaround to s390x. Signed-off-by: Maxim Levitsky Link: https://lore.kernel.org/r/20250111003004.1235645-9-seanjc@google.com Signed-off-by: Sean Christopherson --- diff --git a/tools/testing/selftests/kvm/dirty_log_test.c b/tools/testing/selftests/kvm/dirty_log_test.c index 2aee047b8b1c..55a385499434 100644 --- a/tools/testing/selftests/kvm/dirty_log_test.c +++ b/tools/testing/selftests/kvm/dirty_log_test.c @@ -98,6 +98,7 @@ static void guest_code(void) uint64_t addr; int i; +#ifdef __s390x__ /* * On s390x, all pages of a 1M segment are initially marked as dirty * when a page of the segment is written to for the very first time. @@ -108,6 +109,7 @@ static void guest_code(void) addr = guest_test_virt_mem + i * guest_page_size; vcpu_arch_put_guest(*(uint64_t *)addr, READ_ONCE(iteration)); } +#endif while (true) { for (i = 0; i < TEST_PAGES_PER_LOOP; i++) {