From: Michael Kelley <mhklinux@xxxxxxxxxxx>
__set_memory_enc_pgtable() is only called from __set_memory_enc_dec()
after doing a simple validation check. Prior to commit 812b0597fb40,
__set_memory_enc_dec() did more complex checking, but now the code
can be simplified by collapsing the two functions.
No functional change.
Signed-off-by: Michael Kelley <mhklinux@xxxxxxxxxxx>
---
arch/x86/mm/pat/set_memory.c | 15 +++++----------
1 file changed, 5 insertions(+), 10 deletions(-)
diff --git a/arch/x86/mm/pat/set_memory.c b/arch/x86/mm/pat/set_memory.c
index c13178f37b13..7365c86a7ff0 100644
--- a/arch/x86/mm/pat/set_memory.c
+++ b/arch/x86/mm/pat/set_memory.c
@@ -2131,15 +2131,18 @@ int set_memory_global(unsigned long addr, int numpages)
}
/*
- * __set_memory_enc_pgtable() is used for the hypervisors that get
+ * __set_memory_enc_dec() is used for the hypervisors that get
* informed about "encryption" status via page tables.
*/
-static int __set_memory_enc_pgtable(unsigned long addr, int numpages, bool enc)
+static int __set_memory_enc_dec(unsigned long addr, int numpages, bool enc)
{
pgprot_t empty = __pgprot(0);
struct cpa_data cpa;
int ret;
+ if (!cc_platform_has(CC_ATTR_MEM_ENCRYPT))
+ return 0;
+
/* Should not be working on unaligned addresses */
if (WARN_ONCE(addr & ~PAGE_MASK, "misaligned address: %#lx\n", addr))
addr &= PAGE_MASK;
@@ -2200,14 +2203,6 @@ static int __set_memory_enc_pgtable(unsigned long addr, int numpages, bool enc)
return set_memory_p(&addr, numpages);
}
-static int __set_memory_enc_dec(unsigned long addr, int numpages, bool enc)
-{
- if (cc_platform_has(CC_ATTR_MEM_ENCRYPT))
- return __set_memory_enc_pgtable(addr, numpages, enc);
-
- return 0;
-}
-
int set_memory_encrypted(unsigned long addr, int numpages)
{
return __set_memory_enc_dec(addr, numpages, true);
--
2.25.1
