From: houdek.ryan@fex-emu.org
To: unlisted-recipients:; (no To-header on input)
Cc: linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org,
Ryan Houdek <Houdek.Ryan@fex-emu.org>
Subject: [PATCH 2/4] arm64: Track the sigreturn landing pad location
Date: Sat, 29 May 2021 01:16:18 -0700 [thread overview]
Message-ID: <20210529081620.164422-3-Houdek.Ryan@fex-emu.org> (raw)
In-Reply-To: <20210529081620.164422-1-Houdek.Ryan@fex-emu.org>
From: Ryan Houdek <Houdek.Ryan@fex-emu.org>
This will be required once userspace dispatch is implemented
Signed-off-by: Ryan Houdek <Houdek.Ryan@fex-emu.org>
---
arch/arm64/kernel/vdso/sigreturn.S | 1 +
arch/arm64/kernel/vdso/vdso.lds.S | 1 +
2 files changed, 2 insertions(+)
diff --git a/arch/arm64/kernel/vdso/sigreturn.S b/arch/arm64/kernel/vdso/sigreturn.S
index 0e18729abc3b..44ed8c5486d0 100644
--- a/arch/arm64/kernel/vdso/sigreturn.S
+++ b/arch/arm64/kernel/vdso/sigreturn.S
@@ -73,6 +73,7 @@ SYM_CODE_START(__kernel_rt_sigreturn)
mov x8, #__NR_rt_sigreturn
// PLEASE DO NOT MODIFY
svc #0
+SYM_INNER_LABEL(__kernel_vdso_sigreturn_landing_pad, SYM_L_GLOBAL)
// PLEASE DO NOT MODIFY
// .cfi_endproc
SYM_CODE_END(__kernel_rt_sigreturn)
diff --git a/arch/arm64/kernel/vdso/vdso.lds.S b/arch/arm64/kernel/vdso/vdso.lds.S
index a5e61e09ea92..65d2bd880e2f 100644
--- a/arch/arm64/kernel/vdso/vdso.lds.S
+++ b/arch/arm64/kernel/vdso/vdso.lds.S
@@ -91,3 +91,4 @@ VERSION
* Make the sigreturn code visible to the kernel.
*/
VDSO_sigtramp = __kernel_rt_sigreturn;
+VDSO_vdso_sigreturn_landing_pad = __kernel_vdso_sigreturn_landing_pad;
--
2.30.2
next prev parent reply other threads:[~2021-05-29 8:17 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-29 8:16 [PATCH 0/4] arm64: Implement userspace syscall dispatch houdek.ryan
2021-05-29 8:16 ` [PATCH 1/4] Move userspace syscall dispatch outside of common entry houdek.ryan
2021-06-02 15:41 ` Thomas Gleixner
2021-06-03 10:58 ` Ryan Houdek
2021-05-29 8:16 ` houdek.ryan [this message]
2021-05-29 8:16 ` [PATCH 3/4] arm64: Enable userspace syscall dispatch houdek.ryan
2021-05-29 8:16 ` [PATCH 4/4] arm64: tools: Update syscall user dispatch tests houdek.ryan
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