[kvm-unit-tests PATCH v4 0/3] s390x: Add misaligned instruction tests

[Nina Schoetterl-Glausch <nsg@linux.ibm.com>]

Instructions on s390 must be halfword aligned.
Add two tests for that.
These currently fail when using TCG, Ilya Leoshkevich <iii@linux.ibm.com>
posted fixes to the qemu mailing list.

v3 -> v4:
 * zero whole register with xgr (thanks Janosch)
 * pick up tags (thanks Janosch)

v2 -> v3:
 * pick up R-b (thanks Janosch)
 * use br instead of bcr (thanks Claudio)
 * use text section instead of rodata for ex target (thanks Claudio)
 * fix label position (thanks Claudio)

v1 -> v2:
 * rebase
 * use PSW macros
 * simplify odd psw test (thanks Claudio)
 * rename some identifiers
 * pick up R-b (thanks Claudio)

Nina Schoetterl-Glausch (3):
  s390x/spec_ex: Use PSW macro
  s390x/spec_ex: Add test introducing odd address into PSW
  s390x/spec_ex: Add test of EXECUTE with odd target address

 s390x/spec_ex.c | 85 +++++++++++++++++++++++++++++++++++++++++++------
 1 file changed, 76 insertions(+), 9 deletions(-)

Range-diff against v3:
1:  6ae1eb7d = 1:  c00f8aa2 s390x/spec_ex: Use PSW macro
2:  a0d02438 ! 2:  d9e3f6e0 s390x/spec_ex: Add test introducing odd address into PSW
    @@ Commit message
         the odd address.
         Add a test for this.
     
    +    Acked-by: Janosch Frank <frankja@linux.ibm.com>
         Signed-off-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
     
      ## s390x/spec_ex.c ##
    @@ s390x/spec_ex.c: static int psw_bit_12_is_1(void)
     +
     +	expect_invalid_psw(odd);
     +	fixup_psw.mask = extract_psw_mask();
    -+	asm volatile ( "xr	%%r0,%%r0\n"
    ++	asm volatile ( "xgr	%%r0,%%r0\n"
     +		"	larl	%%r1,0f\n"
     +		"	stg	%%r1,%[fixup_addr]\n"
     +		"	lpswe	%[odd_psw]\n"
3:  e771deeb ! 3:  7ea75611 s390x/spec_ex: Add test of EXECUTE with odd target address
    @@ Commit message
         specification exception occurs.
         Add a test for this.
     
    +    Reviewed-by: Janosch Frank <frankja@linux.ibm.com>
         Signed-off-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
     
      ## s390x/spec_ex.c ##

base-commit: 20de8c3b54078ebc3df0b47344f9ce55bf52b7a5
-- 
2.39.1