* [PATCH] kprobes/x86/xen: blacklist non-attachable xen interrupt functions
@ 2018-12-10 15:12 Andrea Righi
2018-12-11 9:43 ` Masami Hiramatsu
2018-12-17 15:57 ` Boris Ostrovsky
0 siblings, 2 replies; 3+ messages in thread
From: Andrea Righi @ 2018-12-10 15:12 UTC (permalink / raw)
To: Masami Hiramatsu, Boris Ostrovsky, Juergen Gross,
Stefano Stabellini
Cc: Thomas Gleixner, Ingo Molnar, Borislav Petkov, H. Peter Anvin,
x86, xen-devel, linux-kernel
Blacklist symbols in Xen probe-prohibited areas, so that user can see
these prohibited symbols in debugfs.
See also: a50480cb6d61.
Signed-off-by: Andrea Righi <righi.andrea@gmail.com>
---
arch/x86/xen/xen-asm_64.S | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/x86/xen/xen-asm_64.S b/arch/x86/xen/xen-asm_64.S
index bb1c2da0381d..1e9ef0ba30a5 100644
--- a/arch/x86/xen/xen-asm_64.S
+++ b/arch/x86/xen/xen-asm_64.S
@@ -12,6 +12,7 @@
#include <asm/segment.h>
#include <asm/asm-offsets.h>
#include <asm/thread_info.h>
+#include <asm/asm.h>
#include <xen/interface/xen.h>
@@ -24,6 +25,7 @@ ENTRY(xen_\name)
pop %r11
jmp \name
END(xen_\name)
+_ASM_NOKPROBE(xen_\name)
.endm
xen_pv_trap divide_error
--
2.17.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] kprobes/x86/xen: blacklist non-attachable xen interrupt functions
2018-12-10 15:12 [PATCH] kprobes/x86/xen: blacklist non-attachable xen interrupt functions Andrea Righi
@ 2018-12-11 9:43 ` Masami Hiramatsu
2018-12-17 15:57 ` Boris Ostrovsky
1 sibling, 0 replies; 3+ messages in thread
From: Masami Hiramatsu @ 2018-12-11 9:43 UTC (permalink / raw)
To: Andrea Righi
Cc: Boris Ostrovsky, Juergen Gross, Stefano Stabellini,
Thomas Gleixner, Ingo Molnar, Borislav Petkov, H. Peter Anvin,
x86, xen-devel, linux-kernel
On Mon, 10 Dec 2018 16:12:57 +0100
Andrea Righi <righi.andrea@gmail.com> wrote:
> Blacklist symbols in Xen probe-prohibited areas, so that user can see
> these prohibited symbols in debugfs.
>
> See also: a50480cb6d61.
Looks good to me, thanks!
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
>
> Signed-off-by: Andrea Righi <righi.andrea@gmail.com>
> ---
> arch/x86/xen/xen-asm_64.S | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/arch/x86/xen/xen-asm_64.S b/arch/x86/xen/xen-asm_64.S
> index bb1c2da0381d..1e9ef0ba30a5 100644
> --- a/arch/x86/xen/xen-asm_64.S
> +++ b/arch/x86/xen/xen-asm_64.S
> @@ -12,6 +12,7 @@
> #include <asm/segment.h>
> #include <asm/asm-offsets.h>
> #include <asm/thread_info.h>
> +#include <asm/asm.h>
>
> #include <xen/interface/xen.h>
>
> @@ -24,6 +25,7 @@ ENTRY(xen_\name)
> pop %r11
> jmp \name
> END(xen_\name)
> +_ASM_NOKPROBE(xen_\name)
> .endm
>
> xen_pv_trap divide_error
> --
> 2.17.1
>
--
Masami Hiramatsu <mhiramat@kernel.org>
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] kprobes/x86/xen: blacklist non-attachable xen interrupt functions
2018-12-10 15:12 [PATCH] kprobes/x86/xen: blacklist non-attachable xen interrupt functions Andrea Righi
2018-12-11 9:43 ` Masami Hiramatsu
@ 2018-12-17 15:57 ` Boris Ostrovsky
1 sibling, 0 replies; 3+ messages in thread
From: Boris Ostrovsky @ 2018-12-17 15:57 UTC (permalink / raw)
To: Andrea Righi, Masami Hiramatsu, Juergen Gross, Stefano Stabellini
Cc: Thomas Gleixner, Ingo Molnar, Borislav Petkov, H. Peter Anvin,
x86, xen-devel, linux-kernel
On 12/10/18 10:12 AM, Andrea Righi wrote:
> Blacklist symbols in Xen probe-prohibited areas, so that user can see
> these prohibited symbols in debugfs.
>
> See also: a50480cb6d61.
>
> Signed-off-by: Andrea Righi <righi.andrea@gmail.com>
Applied to for-linus-4.21
-boris
^ permalink raw reply [flat|nested] 3+ messages in thread
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2018-12-10 15:12 [PATCH] kprobes/x86/xen: blacklist non-attachable xen interrupt functions Andrea Righi
2018-12-11 9:43 ` Masami Hiramatsu
2018-12-17 15:57 ` Boris Ostrovsky
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