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static_call_inline: Provide trampoline address when updating sites

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In preparation of support of inline static calls on powerpc, provide
trampoline address when updating sites, so that when the destination
function is too far for a direct function call, the call site is
patched with a call to the trampoline.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/5efe0cffc38d6f69b1ec13988a99f1acff551abf.1733245362.git.christophe.leroy@csgroup.eu
This commit is contained in:
Christophe Leroy
2024-12-03 20:44:49 +01:00
committed by Madhavan Srinivasan
parent 65acbd1285
commit d856bc3ac7
2 changed files with 2 additions and 2 deletions
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2
arch/x86/kernel/static_call.c
View File

@@ -158,7 +158,7 @@ void arch_static_call_transform(void *site, void *tramp, void *func, bool tail)
{
mutex_lock(&text_mutex);
if (tramp) {
if (tramp && !site) {
__static_call_validate(tramp, true, true);
__static_call_transform(tramp, __sc_insn(!func, true), func, false);
}

2
kernel/static_call_inline.c
View File

@@ -206,7 +206,7 @@ void __static_call_update(struct static_call_key *key, void *tramp, void *func)
continue;
}
arch_static_call_transform(site_addr, NULL, func,
arch_static_call_transform(site_addr, tramp, func,
static_call_is_tail(site));
}
}