* kvm.c (kvm_ioctl): Handle KVM_SET_SREGS and KVM_GET_SREGES.
(kvm_ioctl_decode_sregs): New function.
(kvm_ioctl_decode_regs_dtable): New function.
(kvm_ioctl_decode_regs_segment): New function.
Signed-off-by: Masatake YAMATO <yam...@redhat.com>
---
kvm.c | 82 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 82 insertions(+)
diff --git a/kvm.c b/kvm.c
index 69a8c97a..b0eb1377 100644
--- a/kvm.c
+++ b/kvm.c
@@ -121,6 +121,85 @@ kvm_ioctl_decode_regs(struct tcb *const tcp, const
unsigned int code, const kern
#endif
}
+#ifdef X86_64
+static void
+kvm_ioctl_decode_regs_segment(const char *prefix, struct kvm_segment *segment)
+{
+ tprints(prefix);
+ PRINT_FIELD_X("={", *segment, base);
+ PRINT_FIELD_U(", ", *segment, limit);
+ PRINT_FIELD_U(", ", *segment, selector);
+ PRINT_FIELD_U(", ", *segment, type);
+ PRINT_FIELD_U(", ", *segment, present);
+ PRINT_FIELD_U(", ", *segment, dpl);
+ PRINT_FIELD_U(", ", *segment, db);
+ PRINT_FIELD_U(", ", *segment, s);
+ PRINT_FIELD_U(", ", *segment, l);
+ PRINT_FIELD_U(", ", *segment, g);
+ PRINT_FIELD_U(", ", *segment, avl);
+ tprints("}");
+}
+
+static void
+kvm_ioctl_decode_regs_dtable(const char *prefix, struct kvm_dtable *dtable)
+{
+ tprints(prefix);
+ PRINT_FIELD_X("={", *dtable, base);
+ PRINT_FIELD_U(", ", *dtable, limit);
+ tprints("}");
+}
+#endif
+
+static int
+kvm_ioctl_decode_sregs(struct tcb *const tcp, const unsigned int code, const
kernel_ulong_t arg)
+{
+ struct kvm_sregs sregs;
+
+#ifdef X86_64
+ if (code == KVM_GET_SREGS && entering(tcp))
+ return 0;
+
+ if (umove(tcp, arg, &sregs) < 0)
+ return RVAL_DECODED;
+
+ tprints(", {");
+ kvm_ioctl_decode_regs_segment("cs", &sregs.cs);
+ if (abbrev(tcp)) {
+ tprints(", ...}");
+ return RVAL_IOCTL_DECODED;
+ }
+
+ kvm_ioctl_decode_regs_segment(", ds", &sregs.ds);
+ kvm_ioctl_decode_regs_segment(", es", &sregs.es);
+ kvm_ioctl_decode_regs_segment(", fs", &sregs.fs);
+ kvm_ioctl_decode_regs_segment(", gs", &sregs.gs);
+ kvm_ioctl_decode_regs_segment(", ss", &sregs.ss);
+ kvm_ioctl_decode_regs_segment(", tr", &sregs.tr);
+ kvm_ioctl_decode_regs_segment(", ldt", &sregs.ldt);
+ kvm_ioctl_decode_regs_dtable(", gdt", &sregs.gdt);
+ kvm_ioctl_decode_regs_dtable(", idt", &sregs.idt);
+ PRINT_FIELD_U(", ", sregs, cr0);
+ PRINT_FIELD_U(", ", sregs, cr2);
+ PRINT_FIELD_U(", ", sregs, cr3);
+ PRINT_FIELD_U(", ", sregs, cr4);
+ PRINT_FIELD_U(", ", sregs, cr8);
+ PRINT_FIELD_U(", ", sregs, efer);
+ PRINT_FIELD_X(", ", sregs, apic_base);
+ tprints(", interrupt_bitmap=[");
+ for (int i = 0; i < (KVM_NR_INTERRUPTS + 63) / 64; i++) {
+ if (i != 0)
+ tprints(", ");
+ tprintf("%" PRI__u64, sregs.interrupt_bitmap[i]);
+ }
+ tprints("]");
+ tprints("}");
+
+ return RVAL_IOCTL_DECODED;
+#else
+ return RVAL_DECODED;
+#endif
+}
+
int
kvm_ioctl(struct tcb *const tcp, const unsigned int code, const kernel_ulong_t
arg)
{
@@ -134,6 +213,9 @@ kvm_ioctl(struct tcb *const tcp, const unsigned int code,
const kernel_ulong_t a
case KVM_SET_REGS:
case KVM_GET_REGS:
return kvm_ioctl_decode_regs(tcp, code, arg);
+ case KVM_SET_SREGS:
+ case KVM_GET_SREGS:
+ return kvm_ioctl_decode_sregs(tcp, code, arg);
/* Commands not taking any arguments. */
case KVM_RUN:
--
2.13.6
------------------------------------------------------------------------------
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