mips/kvm: Cleanup .push/.pop directives in kvm_locore.S

There are:
	.set	push
	.set	noreorder
	.set	noat
	 .
	 .
	 .
	.set	pop

Sequences all over the place in this file, but in some places the
final ".set pop" is erroneously converted to ".set push", so none of
these really do what they appear to.

Clean up the whole mess by moving ".set noreorder", ".set noat" to the
top, and get rid of everything else.

Generated object code is unchanged.

Signed-off-by: David Daney <david.daney@cavium.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>

diff --git a/arch/mips/kvm/kvm_locore.S b/arch/mips/kvm/kvm_locore.S
index 301b9ad..ace372b 100644 (file)
--- a/arch/mips/kvm/kvm_locore.S
+++ b/arch/mips/kvm/kvm_locore.S
@@ -55,12 +55,10 @@
  * a0: run
  * a1: vcpu
  */
-
-FEXPORT(__kvm_mips_vcpu_run)
-       .set    push
        .set    noreorder
        .set    noat
 
+FEXPORT(__kvm_mips_vcpu_run)
        /* k0/k1 not being used in host kernel context */
        addiu   k1, sp, -PT_SIZE
        LONG_S  $0, PT_R0(k1)
@@ -229,15 +227,11 @@ FEXPORT(__kvm_mips_load_k0k1)
 
        /* Jump to guest */
        eret
-       .set    pop
 
 VECTOR(MIPSX(exception), unknown)
 /*
  * Find out what mode we came from and jump to the proper handler.
  */
-       .set    push
-       .set    noat
-       .set    noreorder
        mtc0    k0, CP0_ERROREPC        #01: Save guest k0
        ehb                             #02:
 
@@ -248,7 +242,6 @@ VECTOR(MIPSX(exception), unknown)
        addiu   k0, k0, 0x2000          #06: Exception handler is installed @ offset 0x2000
        j       k0                      #07: jump to the function
         nop                            #08: branch delay slot
-       .set    push
 VECTOR_END(MIPSX(exceptionEnd))
 .end MIPSX(exception)
 
@@ -258,10 +251,6 @@ VECTOR_END(MIPSX(exceptionEnd))
  *
  */
 NESTED (MIPSX(GuestException), CALLFRAME_SIZ, ra)
-       .set    push
-       .set    noat
-       .set    noreorder
-
        /* Get the VCPU pointer from DDTATA_LO */
        mfc0    k1, CP0_DDATA_LO
        addiu   k1, k1, VCPU_HOST_ARCH
@@ -583,7 +572,6 @@ __kvm_mips_return_to_host:
        j       ra
         nop
 
-       .set    pop
 VECTOR_END(MIPSX(GuestExceptionEnd))
 .end MIPSX(GuestException)