linuxppc-dev.lists.ozlabs.org archive mirror
 help / color / mirror / Atom feed
From: Nicholas Piggin <npiggin@gmail.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: Sachin Sant <sachinp@linux.vnet.ibm.com>,
	Nicholas Piggin <npiggin@gmail.com>
Subject: [PATCH 6/8] powerpc/64/interrupts: add missing kprobe annotations on interrupt exit symbols
Date: Mon, 28 Jun 2021 17:49:30 +1000	[thread overview]
Message-ID: <20210628074932.1499554-7-npiggin@gmail.com> (raw)
In-Reply-To: <20210628074932.1499554-1-npiggin@gmail.com>

If one interrupt exit symbol must not be kprobed, none of them can be,
really.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
 arch/powerpc/kernel/interrupt_64.S | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/powerpc/kernel/interrupt_64.S b/arch/powerpc/kernel/interrupt_64.S
index c06ed64541e1..06244b4df719 100644
--- a/arch/powerpc/kernel/interrupt_64.S
+++ b/arch/powerpc/kernel/interrupt_64.S
@@ -198,6 +198,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_HAS_PPR)
 
 #ifdef CONFIG_PPC_BOOK3S
 syscall_vectored_\name\()_restart:
+_ASM_NOKPROBE_SYMBOL(syscall_vectored_\name\()_restart)
 	GET_PACA(r13)
 	ld	r1,PACA_EXIT_SAVE_R1(r13)
 	ld	r2,PACATOC(r13)
@@ -240,6 +241,7 @@ _ASM_NOKPROBE_SYMBOL(system_call_vectored_emulate)
 	.balign IFETCH_ALIGN_BYTES
 	.globl system_call_common_real
 system_call_common_real:
+_ASM_NOKPROBE_SYMBOL(system_call_common_real)
 	ld	r10,PACAKMSR(r13)	/* get MSR value for kernel */
 	mtmsrd	r10
 
@@ -404,6 +406,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_HAS_PPR)
 
 #ifdef CONFIG_PPC_BOOK3S
 syscall_restart:
+_ASM_NOKPROBE_SYMBOL(syscall_restart)
 	GET_PACA(r13)
 	ld	r1,PACA_EXIT_SAVE_R1(r13)
 	ld	r2,PACATOC(r13)
@@ -422,6 +425,7 @@ RESTART_TABLE(.Lsyscall_rst_start, .Lsyscall_rst_end, syscall_restart)
 
 #ifdef CONFIG_PPC_TRANSACTIONAL_MEM
 tabort_syscall:
+_ASM_NOKPROBE_SYMBOL(tabort_syscall)
 	/* Firstly we need to enable TM in the kernel */
 	mfmsr	r10
 	li	r9, 1
@@ -604,6 +608,7 @@ ALT_FTR_SECTION_END_IFCLR(CPU_FTR_STCX_CHECKS_ADDRESS)
 
 #ifdef CONFIG_PPC_BOOK3S
 interrupt_return_\srr\()_user_restart:
+_ASM_NOKPROBE_SYMBOL(interrupt_return_\srr\()_user_restart)
 	GET_PACA(r13)
 	ld	r1,PACA_EXIT_SAVE_R1(r13)
 	ld	r2,PACATOC(r13)
@@ -737,6 +742,7 @@ ALT_FTR_SECTION_END_IFCLR(CPU_FTR_STCX_CHECKS_ADDRESS)
 
 #ifdef CONFIG_PPC_BOOK3S
 interrupt_return_\srr\()_kernel_restart:
+_ASM_NOKPROBE_SYMBOL(interrupt_return_\srr\()_kernel_restart)
 	GET_PACA(r13)
 	ld	r1,PACA_EXIT_SAVE_R1(r13)
 	ld	r2,PACATOC(r13)
-- 
2.23.0


  parent reply	other threads:[~2021-06-28  7:52 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-28  7:49 [PATCH 0/8] powerpc: fast interrupt exit bug and misc fixes Nicholas Piggin
2021-06-28  7:49 ` [PATCH 1/8] powerpc/64e: fix CONFIG_RELOCATABLE build Nicholas Piggin
2021-06-28  7:49 ` [PATCH 2/8] powerpc/64e: remove implicit soft-masking and interrupt exit restart logic Nicholas Piggin
2021-06-28  7:49 ` [PATCH 3/8] powerpc/64s: add a table of implicit soft-masked addresses Nicholas Piggin
2021-06-28 14:26   ` Sachin Sant
2021-06-28  7:49 ` [PATCH 4/8] powerpc/64s/interrupt: preserve regs->softe for NMI interrupts Nicholas Piggin
2021-06-28  7:49 ` [PATCH 5/8] powerpc/64: enable MSR[EE] in irq replay pt_regs Nicholas Piggin
2021-06-28 14:37   ` Sachin Sant
2021-06-28 20:15     ` Nicholas Piggin
2021-06-28  7:49 ` Nicholas Piggin [this message]
2021-06-28  7:49 ` [PATCH 7/8] powerpc/64s/interrupt: clean up interrupt return labels Nicholas Piggin
2021-06-28  7:49 ` [PATCH 8/8] powerpc/64s: move ret_from_fork etc above __end_soft_masked Nicholas Piggin

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20210628074932.1499554-7-npiggin@gmail.com \
    --to=npiggin@gmail.com \
    --cc=linuxppc-dev@lists.ozlabs.org \
    --cc=sachinp@linux.vnet.ibm.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).