From: Miroslav Benes <mbenes@suse.cz>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: linux-kernel@vger.kernel.org, Ingo Molnar <mingo@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Peter Zijlstra <peterz@infradead.org>,
Thomas Gleixner <tglx@linutronix.de>,
Masami Hiramatsu <mhiramat@kernel.org>,
Josh Poimboeuf <jpoimboe@redhat.com>,
Jiri Kosina <jikos@kernel.org>,
live-patching@vger.kernel.org
Subject: Re: [PATCH 3/3 v6] livepatch: Use the default ftrace_ops instead of REGS when ARGS is available
Date: Fri, 13 Nov 2020 12:31:11 +0100 (CET) [thread overview]
Message-ID: <alpine.LSU.2.21.2011131229460.16581@pobox.suse.cz> (raw)
In-Reply-To: <20201113020254.023201106@goodmis.org>
> diff --git a/arch/x86/include/asm/ftrace.h b/arch/x86/include/asm/ftrace.h
> index e00fe88146e0..7c9474d52060 100644
> --- a/arch/x86/include/asm/ftrace.h
> +++ b/arch/x86/include/asm/ftrace.h
> @@ -54,6 +54,9 @@ arch_ftrace_get_regs(struct ftrace_regs *fregs)
> return NULL;
> return &fregs->regs;
> }
> +
> +#define ftrace_instruction_pointer_set(fregs, ip) \
> + do { (fregs)->regs.ip = (_ip); } while (0)
> #endif
>
> #ifdef CONFIG_DYNAMIC_FTRACE
> diff --git a/arch/x86/include/asm/livepatch.h b/arch/x86/include/asm/livepatch.h
> index 1fde1ab6559e..59a08d5c6f1d 100644
> --- a/arch/x86/include/asm/livepatch.h
> +++ b/arch/x86/include/asm/livepatch.h
> @@ -12,9 +12,9 @@
> #include <asm/setup.h>
> #include <linux/ftrace.h>
>
> -static inline void klp_arch_set_pc(struct pt_regs *regs, unsigned long ip)
> +static inline void klp_arch_set_pc(struct ftrace_regs *fregs, unsigned long ip)
> {
> - regs->ip = ip;
> + ftrace_regs_set_ip(fregs, ip);
You forgot to update the call site :)
Miroslav
next prev parent reply other threads:[~2020-11-13 11:32 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20201113020142.252688534@goodmis.org>
2020-11-13 2:01 ` [PATCH 3/3 v6] livepatch: Use the default ftrace_ops instead of REGS when ARGS is available Steven Rostedt
2020-11-13 11:31 ` Miroslav Benes [this message]
2020-11-13 13:10 ` Steven Rostedt
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