Re: [Query] ARM64 kaslr support - randomness, seeding and kdump

2018-03-13 Thread Bhupesh Sharma
' On Wed, Mar 14, 2018 at 7:40 AM, AKASHI Takahiro wrote: > On Wed, Mar 14, 2018 at 01:18:47AM +0530, Bhupesh Sharma wrote: >> On Tue, Mar 13, 2018 at 4:50 PM, Mark Rutland wrote: >> > On Tue, Mar 13, 2018 at 08:07:49PM +0900, AKASHI Takahiro

Re: [PATCH v4 4/5] kexec: add option to fall back to KEXEC_LOAD when KEXEC_FILE_LOAD is not supported.

2018-03-13 Thread Dave Young
On 03/06/18 at 02:15pm, Michal Suchanek wrote: > Not all architectures implement KEXEC_FILE_LOAD. However, on some > archiectures KEXEC_FILE_LOAD is required when secure boot is enabled in > locked-down mode. Previously users had to select the KEXEC_FILE_LOAD > syscall with undocumented -s option.

Re: [PATCH v4 4/5] kexec: add option to fall back to KEXEC_LOAD when KEXEC_FILE_LOAD is not supported.

2018-03-13 Thread Dave Young
On 03/13/18 at 10:30am, Tony Jones wrote: > On 03/06/2018 05:15 AM, Michal Suchanek wrote: > > Not all architectures implement KEXEC_FILE_LOAD. However, on some > > archiectures KEXEC_FILE_LOAD is required when secure boot is enabled in > > locked-down mode. Previously users had to select the

Re: [PATCH v4 5/5] kexec: document -s, -c and -a options.

2018-03-13 Thread Dave Young
On 03/06/18 at 02:15pm, Michal Suchanek wrote: > Signed-off-by: Michal Suchanek > --- > kexec/kexec.8 | 15 +++ > 1 file changed, 15 insertions(+) > > diff --git a/kexec/kexec.8 b/kexec/kexec.8 > index e0131b4ea827..b3543db3f413 100644 > --- a/kexec/kexec.8 > +++

Re: [PATCH v4 5/5] kexec: document -s, -c and -a options.

2018-03-13 Thread Dave Young
On 03/06/18 at 02:15pm, Michal Suchanek wrote: > Signed-off-by: Michal Suchanek > --- > kexec/kexec.8 | 15 +++ > 1 file changed, 15 insertions(+) > > diff --git a/kexec/kexec.8 b/kexec/kexec.8 > index e0131b4ea827..b3543db3f413 100644 > --- a/kexec/kexec.8 > +++

Re: [PATCH v4 4/5] kexec: add option to fall back to KEXEC_LOAD when KEXEC_FILE_LOAD is not supported.

2018-03-13 Thread Dave Young
On 03/06/18 at 02:15pm, Michal Suchanek wrote: > Not all architectures implement KEXEC_FILE_LOAD. However, on some > archiectures KEXEC_FILE_LOAD is required when secure boot is enabled in > locked-down mode. Previously users had to select the KEXEC_FILE_LOAD > syscall with undocumented -s option.

Re: [PATCH v2 2/7] kexec_file, x86, powerpc: factor out kexec_file_ops functions

2018-03-13 Thread Michael Ellerman
Thiago Jung Bauermann writes: > Dave Young writes: > >> On 03/06/18 at 07:22pm, AKASHI Takahiro wrote: >>> As arch_kexec_kernel_image_{probe,load}(), >>> arch_kimage_file_post_load_cleanup() and arch_kexec_kernel_verify_sig() >>> are almost

Re: [Query] ARM64 kaslr support - randomness, seeding and kdump

2018-03-13 Thread AKASHI Takahiro
On Wed, Mar 14, 2018 at 01:18:47AM +0530, Bhupesh Sharma wrote: > On Tue, Mar 13, 2018 at 4:50 PM, Mark Rutland wrote: > > On Tue, Mar 13, 2018 at 08:07:49PM +0900, AKASHI Takahiro wrote: > >> On Tue, Mar 13, 2018 at 10:47:15AM +, Mark Rutland wrote: > >> > On Tue, Mar

Re: [PATCHv4 1/3] powerpc, cpu: partially unbind the mapping between cpu logical id and its seq in dt

2018-03-13 Thread Pingfan Liu
On Tue, Mar 13, 2018 at 10:58 AM, Benjamin Herrenschmidt wrote: > On Mon, 2018-03-12 at 12:43 +0800, Pingfan Liu wrote: >> For kexec -p, the boot cpu can be not the cpu0, this causes the problem >> to alloc paca[]. In theory, there is no requirement to assign cpu's

Re: [PATCH v2 2/7] kexec_file, x86, powerpc: factor out kexec_file_ops functions

2018-03-13 Thread Thiago Jung Bauermann
Dave Young writes: > On 03/06/18 at 07:22pm, AKASHI Takahiro wrote: >> As arch_kexec_kernel_image_{probe,load}(), >> arch_kimage_file_post_load_cleanup() and arch_kexec_kernel_verify_sig() >> are almost duplicated among architectures, they can be commonalized with >> an

Re: [PATCH 4/5] kexec: fallback to KEXEC_LOAD when KEXEC_FILE_LOAD is not supported.

2018-03-13 Thread Michal Suchánek
On Fri, 2 Mar 2018 13:44:58 +0100 Simon Horman wrote: > On Mon, Feb 26, 2018 at 01:00:37PM +0100, Michal Suchanek wrote: > > Not all architectures implement KEXEC_FILE_LOAD. However, on some > > archiectures KEXEC_FILE_LOAD is required when secure boot is > > enabled in

Re: [Query] ARM64 kaslr support - randomness, seeding and kdump

2018-03-13 Thread Bhupesh Sharma
On Tue, Mar 13, 2018 at 4:50 PM, Mark Rutland wrote: > On Tue, Mar 13, 2018 at 08:07:49PM +0900, AKASHI Takahiro wrote: >> On Tue, Mar 13, 2018 at 10:47:15AM +, Mark Rutland wrote: >> > On Tue, Mar 13, 2018 at 07:22:03PM +0900, AKASHI Takahiro wrote: >> > > On Mon, Mar

Re: [PATCH v4 4/5] kexec: add option to fall back to KEXEC_LOAD when KEXEC_FILE_LOAD is not supported.

2018-03-13 Thread Tony Jones
On 03/06/2018 05:15 AM, Michal Suchanek wrote: > Not all architectures implement KEXEC_FILE_LOAD. However, on some > archiectures KEXEC_FILE_LOAD is required when secure boot is enabled in > locked-down mode. Previously users had to select the KEXEC_FILE_LOAD > syscall with undocumented -s option.

Re: [Query] ARM64 kaslr support - randomness, seeding and kdump

2018-03-13 Thread Mark Rutland
On Tue, Mar 13, 2018 at 08:07:49PM +0900, AKASHI Takahiro wrote: > On Tue, Mar 13, 2018 at 10:47:15AM +, Mark Rutland wrote: > > On Tue, Mar 13, 2018 at 07:22:03PM +0900, AKASHI Takahiro wrote: > > > On Mon, Mar 12, 2018 at 08:58:00PM +, Ard Biesheuvel wrote: > > > > On 12 March 2018 at

Re: [Query] ARM64 kaslr support - randomness, seeding and kdump

2018-03-13 Thread AKASHI Takahiro
On Tue, Mar 13, 2018 at 10:47:15AM +, Mark Rutland wrote: > On Tue, Mar 13, 2018 at 07:22:03PM +0900, AKASHI Takahiro wrote: > > On Mon, Mar 12, 2018 at 08:58:00PM +, Ard Biesheuvel wrote: > > > On 12 March 2018 at 20:14, Bhupesh Sharma wrote: > > > More importantly,

Re: [Query] ARM64 kaslr support - randomness, seeding and kdump

2018-03-13 Thread Mark Rutland
On Tue, Mar 13, 2018 at 07:22:03PM +0900, AKASHI Takahiro wrote: > On Mon, Mar 12, 2018 at 08:58:00PM +, Ard Biesheuvel wrote: > > On 12 March 2018 at 20:14, Bhupesh Sharma wrote: > More importantly, neither arm64 _kexec_ supports kaslr. The below is just considering

Re: [Query] ARM64 kaslr support - randomness, seeding and kdump

2018-03-13 Thread AKASHI Takahiro
On Mon, Mar 12, 2018 at 08:58:00PM +, Ard Biesheuvel wrote: > On 12 March 2018 at 20:14, Bhupesh Sharma wrote: > > Hi Ard, > > > > I remember we had a discussion on this topic some time ago, but I was > > working on enabling KASLR support on arm64 boards internally and >

Re: [makedumpfile PATCH] Always use bigger SECTION_MAP_MASK

2018-03-13 Thread Petr Tesarik
Hi, On Tue, 13 Mar 2018 09:18:54 + Masaki Tachibana wrote: > Hi Petr, > > Sorry for the late reply. Never mind. I was on vacation, anyway. ;-) > > -Original Message- > > From: kexec [mailto:kexec-boun...@lists.infradead.org] On Behalf Of Petr > >

RE: [makedumpfile PATCH] Always use bigger SECTION_MAP_MASK

2018-03-13 Thread Masaki Tachibana
Hi Petr, Sorry for the late reply. > -Original Message- > From: kexec [mailto:kexec-boun...@lists.infradead.org] On Behalf Of Petr > Tesarik > Sent: Friday, February 02, 2018 5:19 PM > To: kexec mailing list ; Tachibana Masaki() >

Re: [PATCHv4 1/3] powerpc, cpu: partially unbind the mapping between cpu logical id and its seq in dt

2018-03-13 Thread kbuild test robot
/Pingfan-Liu/powerpc-cpu-partially-unbind-the-mapping-between-cpu-logical-id-and-its-seq-in-dt/20180313-034420 config: powerpc-pq2fads_defconfig (attached as .config) compiler: powerpc-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master