linux-kernel - [PATCH v1 27/30] powerpc/vdso: Remove vdso

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Date:   Sun, 27 Sep 2020 09:16:45 +0000 (UTC)
From:   Christophe Leroy <christophe.leroy@...roup.eu>
To:     Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>
Cc:     linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: [PATCH v1 27/30] powerpc/vdso: Remove vdso_ready

There is no way to get out of vdso_init() prematuraly anymore.

Remove vdso_ready as it will always be 1.

Signed-off-by: Christophe Leroy <christophe.leroy@...roup.eu>
---
 arch/powerpc/kernel/vdso.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/arch/powerpc/kernel/vdso.c b/arch/powerpc/kernel/vdso.c
index 14fbcc76a629..e5a9b60274ba 100644
--- a/arch/powerpc/kernel/vdso.c
+++ b/arch/powerpc/kernel/vdso.c
@@ -47,8 +47,6 @@
 extern char vdso32_start, vdso32_end;
 extern char vdso64_start, vdso64_end;
 
-static int vdso_ready;
-
 /*
  * The vdso data page (aka. systemcfg for old ppc64 fans) is here.
  * Once the early boot kernel code no longer needs to muck around
@@ -171,9 +169,6 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
 
 	mm->context.vdso = NULL;
 
-	if (!vdso_ready)
-		return 0;
-
 	if (mmap_write_lock_killable(mm))
 		return -EINTR;
 
@@ -312,7 +307,6 @@ static int __init vdso_init(void)
 		vdso64_spec.pages = vdso_setup_pages(&vdso64_start, &vdso64_end);
 
 	smp_wmb();
-	vdso_ready = 1;
 
 	return 0;
 }
-- 
2.25.0