linux-kernel - [PATCH v5 02/22] powerpc/code-patching: add a helper to get the address of a patch

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Message-Id: <281b090b4788a3bdd442033590289f23d4c061a3.1537892498.git.christophe.leroy@c-s.fr>
Date:   Tue, 25 Sep 2018 16:50:42 +0000 (UTC)
From:   Christophe Leroy <christophe.leroy@....fr>
To:     Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        aneesh.kumar@...ux.vnet.ibm.com
Cc:     linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: [PATCH v5 02/22] powerpc/code-patching: add a helper to get the
 address of a patch_site

This patch adds a helper to get the address of a patch_site

Signed-off-by: Christophe Leroy <christophe.leroy@....fr>
---
 arch/powerpc/include/asm/code-patching.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/powerpc/include/asm/code-patching.h b/arch/powerpc/include/asm/code-patching.h
index 31733a95bbd0..bca48cc1b6ad 100644
--- a/arch/powerpc/include/asm/code-patching.h
+++ b/arch/powerpc/include/asm/code-patching.h
@@ -36,6 +36,11 @@ int raw_patch_instruction(unsigned int *addr, unsigned int instr);
 int patch_instruction_site(s32 *addr, unsigned int instr);
 int patch_branch_site(s32 *site, unsigned long target, int flags);
 
+static inline unsigned long site_addr(s32 *site)
+{
+	return (unsigned long)site + *site;
+}
+
 int instr_is_relative_branch(unsigned int instr);
 int instr_is_relative_link_branch(unsigned int instr);
 int instr_is_branch_to_addr(const unsigned int *instr, unsigned long addr);
-- 
2.13.3