I created a HYP function and call it from kvm_arch_vcpu_put().
It dies in restore_vfp_state right at the 'ldm' call.
Is the calling convention bad? Or anything else?
vcpu structure is corrupted right after that instruction.
I expanded the restore_vfp_state macro below, without
the ldm the guest boots (of course vfp restore is
not complete).
I'm running this on FastModels 9.x
Thanks,
Mario
+ENTRY(__kvm_restore_host_vfp_state)
+ push {r3, r7}
+
+ mov r1, #0
+ str r1, [r0, #VCPU_VFP_SAVED]
+
+ VFPFMRX r1, FPEXC
+ push {r1}
+ orr r6, r2, #FPEXC_EN
+ VFPFMXR FPEXC, r6
+
+ add r7, r0, #VCPU_VFP_GUEST
+ store_vfp_state r7
+
+ add r7, r0, #VCPU_VFP_HOST
+ ldr r7, [r7]
+ restore_vfp_state r7
+
+ pop {r1}
+ VFPFMXR FPEXC, r1
+ pop {r3, r7}
+ bx lr
+ENDPROC(__kvm_restore_host_vfp_state)
+ LDC p11, cr0, [r7],#32*4
+ MRC p10, 7, r6, cr7, cr0, 0
+ and r6, r6, #(0xf << 0)
+ cmp r6, #2
+ @ldceql p11, cr0, [r7],#32*4
+ @addne r7, r7, #32*4
+ @dsb
+ @sb
>>>>>>>>> Corruption here and dies <<<<<<<
+ ldm r7, {r2-r5}
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