Vitaly Kuznetsov ef40598098 selftests: kvm: fix sync_regs_test with newer gccs ... Commit 204c91eff7 ("KVM: selftests: do not blindly clobber registers in guest asm") was intended to make test more gcc-proof, however, the result is exactly the opposite: on newer gccs (e.g. 8.2.1) the test breaks with ==== Test Assertion Failure ==== x86_64/sync_regs_test.c:168: run->s.regs.regs.rbx == 0xBAD1DEA + 1 pid=14170 tid=14170 - Invalid argument 1 0x00000000004015b3: main at sync_regs_test.c:166 (discriminator 6) 2 0x00007f413fb66412: ?? ??:0 3 0x000000000040191d: _start at ??:? rbx sync regs value incorrect 0x1. Apparently, compile is still free to play games with registers even when they have variables attached. Re-write guest code with 'asm volatile' by embedding ucall there and making sure rbx is preserved. Fixes: 204c91eff7 ("KVM: selftests: do not blindly clobber registers in guest asm") Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>		2019-10-22 13:31:18 +02:00
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cr4_cpuid_sync_test.c	KVM: selftests: Compile code with warnings enabled	2019-05-24 21:27:05 +02:00
evmcs_test.c	selftests: kvm: provide common function to enable eVMCS	2019-08-15 09:16:02 +02:00
hyperv_cpuid.c	KVM: selftests: hyperv_cpuid: add check for NoNonArchitecturalCoreSharing bit	2019-09-24 13:37:31 +02:00
mmio_warning_test.c	tests: kvm: Check for a kernel warning	2019-06-19 16:11:54 +02:00
platform_info_test.c	selftests/kvm: make platform_info_test pass on AMD	2019-08-21 19:08:18 +02:00
set_sregs_test.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 482	2019-06-19 17:09:52 +02:00
smm_test.c	kvm: selftests: hide vcpu_setup in processor code	2019-06-05 14:12:02 +02:00
state_test.c	KVM/arm updates for 5.3	2019-07-11 15:14:16 +02:00
sync_regs_test.c	selftests: kvm: fix sync_regs_test with newer gccs	2019-10-22 13:31:18 +02:00
vmx_close_while_nested_test.c	selftests: kvm: consolidate VMX support checks	2019-10-22 13:31:16 +02:00
vmx_dirty_log_test.c	selftests: kvm: vmx_dirty_log_test: skip the test when VMX is not supported	2019-10-22 13:31:17 +02:00
vmx_set_nested_state_test.c	selftests: kvm: consolidate VMX support checks	2019-10-22 13:31:16 +02:00
vmx_tsc_adjust_test.c	selftests: kvm: consolidate VMX support checks	2019-10-22 13:31:16 +02:00