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authorJuergen Gross <jgross@suse.com>2021-03-11 17:23:09 +0300
committerBorislav Petkov <bp@suse.de>2021-03-11 18:17:52 +0300
commita0e2bf7cb7006b5a58ee81f4da4fe575875f2781 (patch)
tree74da4d815e17d058066f7d615e0b6c462b155f71 /drivers/xen
parent6ea312d95e0226b306bb4b8ee3a0727d880378cb (diff)
downloadlinux-a0e2bf7cb7006b5a58ee81f4da4fe575875f2781.tar.xz
x86/paravirt: Switch time pvops functions to use static_call()
The time pvops functions are the only ones left which might be used in 32-bit mode and which return a 64-bit value. Switch them to use the static_call() mechanism instead of pvops, as this allows quite some simplification of the pvops implementation. Signed-off-by: Juergen Gross <jgross@suse.com> Signed-off-by: Borislav Petkov <bp@suse.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20210311142319.4723-5-jgross@suse.com
Diffstat (limited to 'drivers/xen')
-rw-r--r--drivers/xen/time.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/xen/time.c b/drivers/xen/time.c
index 108edbcbc040..152dd33bb223 100644
--- a/drivers/xen/time.c
+++ b/drivers/xen/time.c
@@ -7,6 +7,7 @@
#include <linux/math64.h>
#include <linux/gfp.h>
#include <linux/slab.h>
+#include <linux/static_call.h>
#include <asm/paravirt.h>
#include <asm/xen/hypervisor.h>
@@ -175,7 +176,7 @@ void __init xen_time_setup_guest(void)
xen_runstate_remote = !HYPERVISOR_vm_assist(VMASST_CMD_enable,
VMASST_TYPE_runstate_update_flag);
- pv_ops.time.steal_clock = xen_steal_clock;
+ static_call_update(pv_steal_clock, xen_steal_clock);
static_key_slow_inc(&paravirt_steal_enabled);
if (xen_runstate_remote)