[xen master] xen/riscv: fix build issue for bullseye-riscv64 container

[patchbot@xxxxxxx]

commit e05e3cedb6dbe50e43b1d6a647c16a47219fde1d
Author:     Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>
AuthorDate: Wed Jul 31 17:21:49 2024 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Wed Jul 31 17:21:49 2024 +0200

    xen/riscv: fix build issue for bullseye-riscv64 container
    
    Address compilation error on bullseye-riscv64 container:
       undefined reference to `guest_physmap_remove_page`
    
    Since there is no current implementation of `guest_physmap_remove_page()`,
    a stub function has been added.
    
    Reported-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Signed-off-by: Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>
    Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
---
 xen/arch/riscv/stubs.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/xen/arch/riscv/stubs.c b/xen/arch/riscv/stubs.c
index b67d99729f..3285d18899 100644
--- a/xen/arch/riscv/stubs.c
+++ b/xen/arch/riscv/stubs.c
@@ -381,6 +381,12 @@ int arch_get_paging_mempool_size(struct domain *d, 
uint64_t *size)
     BUG_ON("unimplemented");
 }
 
+int guest_physmap_remove_page(struct domain *d, gfn_t gfn, mfn_t mfn,
+                              unsigned int page_order)
+{
+    BUG_ON("unimplemented");
+}
+
 /* delay.c */
 
 void udelay(unsigned long usecs)
--
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