lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:	Tue, 16 Jun 2015 20:27:07 -0600
From:	David Ahern <dsahern@...il.com>
To:	Hemant Kumar <hemant@...ux.vnet.ibm.com>,
	linuxppc-dev@...ts.ozlabs.org
CC:	linux-kernel@...r.kernel.org, kvm-ppc@...r.kernel.org,
	acme@...nel.org, mingo@...nel.org, sukadev@...ux.vnet.ibm.com,
	maddy@...ux.vnet.ibm.com, srikar@...ux.vnet.ibm.com,
	paulus@...ba.org, namhyung@...nel.org, jolsa@...nel.org,
	peterz@...radead.org
Subject: Re: [RFC PATCH] perf/kvm: Guest Symbol Resolution for powerpc

On 6/16/15 7:24 PM, Hemant Kumar wrote:
> Because, this depends on the kernel tracepoint "kvm_hv:kvm_guest_exit".
> perf_prepare_sample() in the kernel side sets the event->header.misc
> field to
> PERF_RECORD_MISC_KERNEL through perf_misc_flags(pt_regs). In case of
> tracepoints which always get hit in the host kernel context, the
> perf_misc_flags() will always return PERF_RECORD_MISC_KERNEL.
>
> IMHO we will rather have to set the cpumode in the user space for this
> tracepoint
> and we can't depend on the event->header.misc field for this case.
>
> What would you suggest?
>

oh, right you are using a tracepoint for this. It does not have the 
hooks to specify cpumode. Never mind.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Powered by blists - more mailing lists