diff mbox series

[v2,1/7] xen/altcall: Use __ro_after_init now that it exists

Message ID 20220214125632.24563-2-andrew.cooper3@citrix.com (mailing list archive)
State New, archived
Headers show
Series x86: Further harden function pointers | expand

Commit Message

Andrew Cooper Feb. 14, 2022, 12:56 p.m. UTC
For the !CONFIG_ALTERNATIVE_CALL case, the use of __read_mostly was only a
stopgap while nothing better existed.  __ro_after_init now does, so it use.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
---
CC: Jan Beulich <JBeulich@suse.com>
CC: Roger Pau Monné <roger.pau@citrix.com>
CC: Wei Liu <wl@xen.org>

v2:
 * New
---
 xen/include/xen/alternative-call.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Jan Beulich Feb. 14, 2022, 12:59 p.m. UTC | #1
On 14.02.2022 13:56, Andrew Cooper wrote:
> For the !CONFIG_ALTERNATIVE_CALL case, the use of __read_mostly was only a
> stopgap while nothing better existed.  __ro_after_init now does, so it use.
> 
> Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>

Acked-by: Jan Beulich <jbeulich@suse.com>
diff mbox series

Patch

diff --git a/xen/include/xen/alternative-call.h b/xen/include/xen/alternative-call.h
index c2d3b70e312e..5c6b9a562b92 100644
--- a/xen/include/xen/alternative-call.h
+++ b/xen/include/xen/alternative-call.h
@@ -57,7 +57,7 @@ 
 #define alternative_call(func, args...)  (func)(args)
 #define alternative_vcall(func, args...) (func)(args)
 
-#define __alt_call_maybe_initdata __read_mostly
+#define __alt_call_maybe_initdata __ro_after_init
 
 #endif /* !CONFIG_ALTERNATIVE_CALL */
 #endif /* XEN_ALTERNATIVE_CALL */