From: Anton Blanchard <anton@samba.org>
To: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com>
Cc: Andrew Donnellan <andrew.donnellan@au1.ibm.com>,
Michael Ellerman <mpe@ellerman.id.au>,
chris@distroguy.com, aneesh.kumar@linux.vnet.ibm.com,
ast@kernel.org, linux-kernel@vger.kernel.org, oss@buserror.net,
paul.gortmaker@windriver.com, duwe@lst.de,
lsorense@csclub.uwaterloo.ca, bauerman@linux.vnet.ibm.com,
oohall@gmail.com, naveen.n.rao@linux.vnet.ibm.com,
linuxppc-dev@lists.ozlabs.org, paulus@samba.org,
viro@zeniv.linux.org.uk
Subject: Re: [PATCH 1/3] powerpc: Emulation support for load/store instructions on LE
Date: Sun, 6 Nov 2016 06:31:51 +1100 [thread overview]
Message-ID: <20161106063151.3ef04e9e@kryten> (raw)
In-Reply-To: <581C1D32.50108@linux.vnet.ibm.com>
Hi,
> kprobe, uprobe, hw-breakpoint and xmon are the only user of
> emulate_step.
>
> Kprobe / uprobe single-steps instruction if they can't emulate it, so
> there is no problem with them. As I mention, hw-breakpoint is broken.
> However I'm not sure about xmon, I need to check that.
I was mostly concerned that it would impact kprobes. Sounds like we are
ok there.
> So yes, there is no user-visible feature that depends on this.
Aren't hardware breakpoints exposed via perf? I'd call perf
user-visible.
Anton
next prev parent reply other threads:[~2016-11-05 19:32 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-02 8:53 [PATCH 0/3] powerpc: Emulation support for load/store instructions on LE Ravi Bangoria
2016-11-02 8:53 ` [PATCH 1/3] " Ravi Bangoria
2016-11-02 21:04 ` Anton Blanchard
2016-11-03 5:41 ` Ravi Bangoria
2016-11-03 9:48 ` Michael Ellerman
2016-11-03 10:27 ` Ravi Bangoria
2016-11-04 2:07 ` Andrew Donnellan
2016-11-04 5:31 ` Ravi Bangoria
2016-11-05 19:31 ` Anton Blanchard [this message]
2016-11-06 18:59 ` Ravi Bangoria
2016-11-02 8:53 ` [PATCH 2/3] powerpc: Add encoding for couple of load/store instructions Ravi Bangoria
2016-11-02 8:53 ` [PATCH 3/3] powerpc: emulate_step test for " Ravi Bangoria
2016-11-02 10:30 ` Naveen N. Rao
2016-11-03 7:03 ` [PATCH 0/3] powerpc: Emulation support for load/store instructions on LE Naveen N. Rao
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