to both humans and tools by
> calculating them the normal way.
>
> Signed-off-by: Josh Poimboeuf
Acked-by: Sven Schnelle # s390
> ---
> arch/arm64/include/asm/asm-bug.h | 4 ++--
> arch/powerpc/include/asm/bug.h | 5 +++--
> arch/riscv/include/asm/bug.h | 4 ++--
>
Heiko Carstens writes:
> So, the in both variants s390 provides nearly identical data. The only
> difference is that for FL_SAVE_REGS the program status word mask is
> missing; therefore it is not possible to figure out the condition code
> or if interrupts were enabled/disabled.
>
> Vasily,
Hi Mark,
Mark Rutland writes:
> On Fri, Jan 28, 2022 at 05:08:48PM +0100, Sven Schnelle wrote:
>> We noticed the PR from Paul and are currently testing the fix. So far
>> it's looking good. The configuration where we have seen the hang is a
>> bit unusual:
>>
>&
Hi Mark,
Mark Rutland writes:
> On arm64 I bisected this down to:
>
> 7a30871b6a27de1a ("rcu-tasks: Introduce ->percpu_enqueue_shift for dynamic
> queue selection")
>
> Which was going wrong because ilog2() rounds down, and so the shift was wrong
> for any nr_cpus that was not a
Hi Mark,
Mark Rutland writes:
> * I intermittently see a hang when running the tests. I previously hit that
> when originally trying to bisect this issue (and IIRC that bisected down to
> some RCU changes, but I need to re-run that). When the tests hang I
> magic-srsrq + L tells me:
>
>
Mark Rutland writes:
> On Thu, Jan 27, 2022 at 07:46:01AM -0500, Steven Rostedt wrote:
>> On Thu, 27 Jan 2022 12:27:04 +
>> Mark Rutland wrote:
>>
>> > Ah, so those non-ELF relocations for the mcount_loc table just mean "apply
>> > the
>> > KASLR offset here", which is equivalent for all
Mark Rutland writes:
>> Isn't x86 relocatable in some configurations (e.g. for KASLR)?
>>
>> I can't see how the sort works for those cases, because the mcount_loc
>> entries
>> are absolute, and either:
>>
>> * The sorted entries will get overwritten by the unsorted relocation entries,
>>
It wasn't used anywhere, so lets drop it.
Reviewed-by: Christophe Leroy
Reviewed-by: Thiago Jung Bauermann
Signed-off-by: Sven Schnelle
---
kernel/kexec_elf.c | 4
1 file changed, 4 deletions(-)
diff --git a/kernel/kexec_elf.c b/kernel/kexec_elf.c
index 87935bd5e2ba..6c806ce96ac1 100644
The powerpc version only supported 64 bit. Add some
code to switch decoding of fields during runtime so
we can kexec a 32 bit kernel from a 64 bit kernel and
vice versa.
Signed-off-by: Sven Schnelle
Reviewed-by: Thiago Jung Bauermann
---
kernel/kexec_elf.c | 57
It's not used anywhere so just drop it.
Signed-off-by: Sven Schnelle
Reviewed-by: Thiago Jung Bauermann
---
kernel/kexec_elf.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/kernel/kexec_elf.c b/kernel/kexec_elf.c
index 137037603117..87935bd5e2ba 100644
--- a/kernel/kexec_elf.c
+++ b
We're not using them, so we can drop the parsing.
Signed-off-by: Sven Schnelle
Reviewed-by: Thiago Jung Bauermann
---
include/linux/kexec.h | 1 -
kernel/kexec_elf.c| 137 --
2 files changed, 138 deletions(-)
diff --git a/include/linux/kexec.h b
Right now powerpc provides an implementation to read elf files
with the kexec_file_load() syscall. Make that available as a public
kexec interface so it can be re-used on other architectures.
Signed-off-by: Sven Schnelle
---
arch/Kconfig | 3 +
arch/powerpc
base was never assigned, so we can remove it.
Reviewed-by: Christophe Leroy
Reviewed-by: Thiago Jung Bauermann
Signed-off-by: Sven Schnelle
---
kernel/kexec_elf.c | 7 ++-
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/kernel/kexec_elf.c b/kernel/kexec_elf.c
index
Change the order to have a 64/32/16 order, no functional change.
Signed-off-by: Sven Schnelle
Reviewed-by: Thiago Jung Bauermann
---
kernel/kexec_elf.c | 12 ++--
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/kernel/kexec_elf.c b/kernel/kexec_elf.c
index 26c6310167a0
into smaller pieces
- rebase onto powerpc/next
- remove unused variable in kexec_elf_load()
Changes to RFC version:
- remove unused Elf_Rel macro
- remove section header parsing
- remove PURGATORY_STACK_SIZE
- change order of elf_*_to_cpu() functions
- remove elf_addr_to_cpu macro
Sven Schnelle
Hi,
[Adding Helge to CC list]
On Tue, Jul 16, 2019 at 03:06:33PM +0200, Christian Brauner wrote:
> On Mon, Jul 15, 2019 at 03:56:04PM +0200, Christian Borntraeger wrote:
> > I think Vasily already has a clone3 patch for s390x with 435.
>
> A quick follow-up on this. Helge and Michael have
Right now powerpc provides an implementation to read elf files
with the kexec_file() syscall. Make that available as a public
kexec interface so it can be re-used on other architectures.
Signed-off-by: Sven Schnelle
---
arch/Kconfig | 3 +
arch/powerpc/Kconfig
header parsing
- remove PURGATORY_STACK_SIZE
- change order of elf_*_to_cpu() functions
- remove elf_addr_to_cpu macro
Sven Schnelle (7):
kexec: add KEXEC_ELF
kexec_elf: change order of elf_*_to_cpu() functions
kexec_elf: remove parsing of section headers
kexec_elf: remove
We're not using them, so we can drop the parsing.
Signed-off-by: Sven Schnelle
---
include/linux/kexec.h | 1 -
kernel/kexec_elf.c| 137 --
2 files changed, 138 deletions(-)
diff --git a/include/linux/kexec.h b/include/linux/kexec.h
index
Change the order to have a 64/32/16 order, no functional change.
Signed-off-by: Sven Schnelle
---
kernel/kexec_elf.c | 12 ++--
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/kernel/kexec_elf.c b/kernel/kexec_elf.c
index 6e9f52171ede..76e7df64d715 100644
--- a/kernel
It wasn't used anywhere, so lets drop it.
Reviewed-by: Christophe Leroy
Signed-off-by: Sven Schnelle
---
kernel/kexec_elf.c | 4
1 file changed, 4 deletions(-)
diff --git a/kernel/kexec_elf.c b/kernel/kexec_elf.c
index 70d31b8feeae..e346659af324 100644
--- a/kernel/kexec_elf.c
+++ b
base was never assigned, so we can remove it.
Reviewed-by: Christophe Leroy
Signed-off-by: Sven Schnelle
---
kernel/kexec_elf.c | 7 ++-
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/kernel/kexec_elf.c b/kernel/kexec_elf.c
index e346659af324..9421eebbacf0 100644
It's not used anywhere so just drop it.
Signed-off-by: Sven Schnelle
---
kernel/kexec_elf.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/kernel/kexec_elf.c b/kernel/kexec_elf.c
index effe9dc0b055..70d31b8feeae 100644
--- a/kernel/kexec_elf.c
+++ b/kernel/kexec_elf.c
@@ -8,8 +8,6
The powerpc version only supported 64 bit. Add some
code to switch decoding of fields during runtime so
we can kexec a 32 bit kernel from a 64 bit kernel and
vice versa.
Signed-off-by: Sven Schnelle
---
kernel/kexec_elf.c | 57 ++
1 file changed, 42
Hi Michael,
On Thu, Jul 11, 2019 at 09:08:51PM +1000, Michael Ellerman wrote:
> Sven Schnelle writes:
> > On Wed, Jul 10, 2019 at 05:09:29PM +0200, Christophe Leroy wrote:
> >> Le 10/07/2019 à 16:29, Sven Schnelle a écrit :
> >> > It had only one definition, so
Hi Christophe,
On Wed, Jul 10, 2019 at 05:09:29PM +0200, Christophe Leroy wrote:
>
>
> Le 10/07/2019 à 16:29, Sven Schnelle a écrit :
> > It had only one definition, so just use the function directly.
>
> It had only one definition because it was for ppc64 only.
> Bu
We're not using them, so we can drop the parsing.
Signed-off-by: Sven Schnelle
---
include/linux/kexec.h | 1 -
kernel/kexec_elf.c| 137 --
2 files changed, 138 deletions(-)
diff --git a/include/linux/kexec.h b/include/linux/kexec.h
index
base was never unsigned, so we can remove it.
Signed-off-by: Sven Schnelle
---
kernel/kexec_elf.c | 7 ++-
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/kernel/kexec_elf.c b/kernel/kexec_elf.c
index b7e47ddd7cad..a56ec5481e71 100644
--- a/kernel/kexec_elf.c
+++ b/kernel
It had only one definition, so just use the function directly.
Signed-off-by: Sven Schnelle
---
kernel/kexec_elf.c | 20 +---
1 file changed, 9 insertions(+), 11 deletions(-)
diff --git a/kernel/kexec_elf.c b/kernel/kexec_elf.c
index 70d31b8feeae..99e6d63b5dfc 100644
It's not used anywhere so just drop it.
Signed-off-by: Sven Schnelle
---
kernel/kexec_elf.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/kernel/kexec_elf.c b/kernel/kexec_elf.c
index effe9dc0b055..70d31b8feeae 100644
--- a/kernel/kexec_elf.c
+++ b/kernel/kexec_elf.c
@@ -8,8 +8,6
Change the order to have a 64/32/16 order, no functional change.
Signed-off-by: Sven Schnelle
---
kernel/kexec_elf.c | 12 ++--
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/kernel/kexec_elf.c b/kernel/kexec_elf.c
index 6e9f52171ede..76e7df64d715 100644
--- a/kernel
Right now powerpc provides an implementation to read elf files
with the kexec_file() syscall. Make that available as a public
kexec interface so it can be re-used on other architectures.
Signed-off-by: Sven Schnelle
---
arch/Kconfig | 3 +
arch/powerpc/Kconfig
It wasn't used anywhere, so lets drop it.
Signed-off-by: Sven Schnelle
---
kernel/kexec_elf.c | 4
1 file changed, 4 deletions(-)
diff --git a/kernel/kexec_elf.c b/kernel/kexec_elf.c
index 99e6d63b5dfc..b7e47ddd7cad 100644
--- a/kernel/kexec_elf.c
+++ b/kernel/kexec_elf.c
@@ -8,10 +8,6
Elf_Rel macro
- remove section header parsing
- remove PURGATORY_STACK_SIZE
- change order of elf_*_to_cpu() functions
- remove elf_addr_to_cpu macro
Sven Schnelle (7):
kexec: add KEXEC_ELF
kexec_elf: change order of elf_*_to_cpu() functions
kexec_elf: remove parsing of section headers
Hi Christophe,
On Wed, Jul 10, 2019 at 01:19:13PM +, Christophe Leroy wrote:
> Hi Sven,
>
> On 07/09/2019 07:43 PM, Sven Schnelle wrote:
> > Right now powerpc provides an implementation to read elf files
> > with the kexec_file() syscall. Make that available as a publi
We're not using them, so we can drop the parsing.
Signed-off-by: Sven Schnelle
---
include/linux/kexec.h | 1 -
kernel/kexec_elf.c| 137 --
2 files changed, 138 deletions(-)
diff --git a/include/linux/kexec.h b/include/linux/kexec.h
index
It wasn't used anywhere, so lets drop it.
Signed-off-by: Sven Schnelle
---
kernel/kexec_elf.c | 4
1 file changed, 4 deletions(-)
diff --git a/kernel/kexec_elf.c b/kernel/kexec_elf.c
index 99e6d63b5dfc..b7e47ddd7cad 100644
--- a/kernel/kexec_elf.c
+++ b/kernel/kexec_elf.c
@@ -8,10 +8,6
Change the order to have a 64/32/16 order, no functional change.
Signed-off-by: Sven Schnelle
---
kernel/kexec_elf.c | 12 ++--
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/kernel/kexec_elf.c b/kernel/kexec_elf.c
index 6e9f52171ede..76e7df64d715 100644
--- a/kernel
Right now powerpc provides an implementation to read elf files
with the kexec_file() syscall. Make that available as a public
kexec interface so it can be re-used on other architectures.
Signed-off-by: Sven Schnelle
---
arch/Kconfig | 3 +
arch/powerpc/Kconfig
It's not used anywhere so just drop it.
Signed-off-by: Sven Schnelle
---
kernel/kexec_elf.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/kernel/kexec_elf.c b/kernel/kexec_elf.c
index effe9dc0b055..70d31b8feeae 100644
--- a/kernel/kexec_elf.c
+++ b/kernel/kexec_elf.c
@@ -8,8 +8,6
It had only one definition, so just use the function directly.
Signed-off-by: Sven Schnelle
---
kernel/kexec_elf.c | 20 +---
1 file changed, 9 insertions(+), 11 deletions(-)
diff --git a/kernel/kexec_elf.c b/kernel/kexec_elf.c
index 70d31b8feeae..99e6d63b5dfc 100644
into smaller pieces
- rebase onto powerpc/next
- remove unused variable in kexec_elf_load()
Changes to RFC version:
- remove unused Elf_Rel macro
- remove section header parsing
- remove PURGATORY_STACK_SIZE
- change order of elf_*_to_cpu() functions
- remove elf_addr_to_cpu macro
Sven Schnelle (7
base was never unsigned, so we can remove it.
Signed-off-by: Sven Schnelle
---
kernel/kexec_elf.c | 7 ++-
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/kernel/kexec_elf.c b/kernel/kexec_elf.c
index b7e47ddd7cad..a56ec5481e71 100644
--- a/kernel/kexec_elf.c
+++ b/kernel
Hi Christophe,
On Mon, Jul 08, 2019 at 12:40:52PM +0200, Christophe Leroy wrote:
> > From: Sven Schnelle
>
> Please describe you patch.
>
> All the changes you are doing to the ppc64 version in order to make it
> generic should be described.
>
> Those changes are
Signed-off-by: Sven Schnelle
---
arch/Kconfig | 3 +
arch/powerpc/Kconfig | 1 +
arch/powerpc/kernel/kexec_elf_64.c | 547 +
include/linux/kexec.h | 35 ++
kernel/Makefile| 1 +
kernel
Hi Philipp,
On Mon, Jul 01, 2019 at 02:31:20PM +0200, Philipp Rudo wrote:
> Sven Schnelle wrote:
>
> > I'm attaching the patch to this Mail. What do you think about that change?
> > s390 also uses ELF files, and (maybe?) could also switch to this
> > implementati
Hi Michael,
On Fri, Jun 28, 2019 at 12:04:11PM +1000, Michael Ellerman wrote:
> Sven Schnelle writes:
> https://github.com/linuxppc/wiki/wiki/Booting-with-Qemu
>
> But I'm not sure where you get a version of kexec that uses kexec_file().
kexec-tools HEAD supports it, so that's n
generic support for elf kernel images
Signed-off-by: Sven Schnelle
---
arch/Kconfig | 3 +
arch/powerpc/Kconfig | 1 +
arch/powerpc/kernel/kexec_elf_64.c | 547 +--
include/linux/kexec.h | 35 ++
kernel/Makefile
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