[PATCH for 5.10-stable] x86/paravirt: Fix build due to __text_gen_insn() backport

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On Mon, Mar 04, 2024 at 10:49:33AM -0800, Omar Sandoval wrote:
> v5.10.211 is failing to build with the attached .config with the
> following error:

Ok, let's try this:

---
From: "Borislav Petkov (AMD)" <bp@xxxxxxxxx>

The Link tag has all the details but basically due to missing upstream
commits, the header which contains __text_gen_insn() is not in the
includes in paravirt.c, leading to:

  arch/x86/kernel/paravirt.c: In function 'paravirt_patch_call':
  arch/x86/kernel/paravirt.c:65:9: error: implicit declaration of function '__text_gen_insn' \
  [-Werror=implicit-function-declaration]
   65 |         __text_gen_insn(insn_buff, CALL_INSN_OPCODE,
      |         ^~~~~~~~~~~~~~~

Add the missing include.

Reported-by: Omar Sandoval <osandov@xxxxxxxxxxx>
Signed-off-by: Borislav Petkov (AMD) <bp@xxxxxxxxx>
Link: https://lore.kernel.org/r/ZeYXvd1-rVkPGvvW@telecaster
---
 arch/x86/kernel/paravirt.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/kernel/paravirt.c b/arch/x86/kernel/paravirt.c
index 5bea8d93883a..f0e4ad8595ca 100644
--- a/arch/x86/kernel/paravirt.c
+++ b/arch/x86/kernel/paravirt.c
@@ -31,6 +31,7 @@
 #include <asm/special_insns.h>
 #include <asm/tlb.h>
 #include <asm/io_bitmap.h>
+#include <asm/text-patching.h>
 
 /*
  * nop stub, which must not clobber anything *including the stack* to
-- 
2.43.0

-- 
Regards/Gruss,
    Boris.

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