swiotlb passes virtual addresses to set_memory_encrypted() and
set_memory_decrypted(), but uv_remove_shared() and uv_set_shared()
expect physical addresses. This currently works, because virtual
and physical addresses are the same.
Add virt_to_phys() to resolve the virtual-physical confusion.
Reported-by: Marc Hartmayer <mhartmay@xxxxxxxxxxxxx>
Signed-off-by: Nico Boehr <nrb@xxxxxxxxxxxxx>
---
arch/s390/include/asm/mem_encrypt.h | 4 ++--
arch/s390/mm/init.c | 12 ++++++------
2 files changed, 8 insertions(+), 8 deletions(-)
diff --git a/arch/s390/include/asm/mem_encrypt.h b/arch/s390/include/asm/mem_encrypt.h
index 08a8b96606d7..b85e13505a0f 100644
--- a/arch/s390/include/asm/mem_encrypt.h
+++ b/arch/s390/include/asm/mem_encrypt.h
@@ -4,8 +4,8 @@
#ifndef __ASSEMBLY__
-int set_memory_encrypted(unsigned long addr, int numpages);
-int set_memory_decrypted(unsigned long addr, int numpages);
+int set_memory_encrypted(unsigned long vaddr, int numpages);
+int set_memory_decrypted(unsigned long vaddr, int numpages);
#endif /* __ASSEMBLY__ */
diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c
index 97d66a3e60fb..d509656c67d7 100644
--- a/arch/s390/mm/init.c
+++ b/arch/s390/mm/init.c
@@ -140,25 +140,25 @@ void mark_rodata_ro(void)
debug_checkwx();
}
-int set_memory_encrypted(unsigned long addr, int numpages)
+int set_memory_encrypted(unsigned long vaddr, int numpages)
{
int i;
/* make specified pages unshared, (swiotlb, dma_free) */
for (i = 0; i < numpages; ++i) {
- uv_remove_shared(addr);
- addr += PAGE_SIZE;
+ uv_remove_shared(virt_to_phys((void *)vaddr));
+ vaddr += PAGE_SIZE;
}
return 0;
}
-int set_memory_decrypted(unsigned long addr, int numpages)
+int set_memory_decrypted(unsigned long vaddr, int numpages)
{
int i;
/* make specified pages shared (swiotlb, dma_alloca) */
for (i = 0; i < numpages; ++i) {
- uv_set_shared(addr);
- addr += PAGE_SIZE;
+ uv_set_shared(virt_to_phys((void *)vaddr));
+ vaddr += PAGE_SIZE;
}
return 0;
}
--
2.37.3
