[Xen-changelog] [xen staging] x86: put x86emul_{read, write}_dr under CONFIG_PV

[patchbot@xxxxxxx]

commit a76e48f879dda43d5f7d36ecdb241678ff0c441e
Author:     Wei Liu <wei.liu2@xxxxxxxxxx>
AuthorDate: Mon Nov 5 17:38:58 2018 +0000
Commit:     Wei Liu <wei.liu2@xxxxxxxxxx>
CommitDate: Tue Nov 6 10:19:32 2018 +0000

    x86: put x86emul_{read,write}_dr under CONFIG_PV
    
    A build breakage is discovered by a non-debug build. Debug build
    worked because the ASSERT made the compiler eliminate the rest of the
    functions.
    
    Currently they are PV only. There are comments alluding to possible
    future HVM support but we can cross the bridge when we get there.
    
    Signed-off-by: Wei Liu <wei.liu2@xxxxxxxxxx>
    Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
---
 xen/arch/x86/x86_emulate.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/xen/arch/x86/x86_emulate.c b/xen/arch/x86/x86_emulate.c
index 886bd87e59..b1dfc9f261 100644
--- a/xen/arch/x86/x86_emulate.c
+++ b/xen/arch/x86/x86_emulate.c
@@ -89,6 +89,7 @@ int x86emul_write_xcr(unsigned int reg, uint64_t val,
     return X86EMUL_OKAY;
 }
 
+#ifdef CONFIG_PV
 /* Called with NULL ctxt in hypercall context. */
 int x86emul_read_dr(unsigned int reg, unsigned long *val,
                     struct x86_emulate_ctxt *ctxt)
@@ -155,6 +156,7 @@ int x86emul_write_dr(unsigned int reg, unsigned long val,
         return X86EMUL_EXCEPTION;
     }
 }
+#endif /* CONFIG_PV */
 
 /*
  * Local variables:
--
generated by git-patchbot for /home/xen/git/xen.git#staging

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