Nicholas Piggin writes:
> diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S
> index ccf913cedd29..b466b3e1bb3f 100644
> --- a/arch/powerpc/kernel/entry_64.S
> +++ b/arch/powerpc/kernel/entry_64.S
> @@ -64,6 +64,30 @@ exception_marker:
> .section".text"
>
I wanted to build the fsl dts in my machine and found that
the dtb have not extra space,so uboot will cause about
FDT_ERR_NOSPACE issue.
Signed-off-by: Youlin Song
---
arch/powerpc/boot/dts/Makefile | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/powerpc/boot/dts/Makefile
Nicholas Piggin writes:
> When an interrupt is taken, the SRR registers are set to return to
> where it left off. Unless they are modified in the meantime, or the
> return address or MSR are modified, there is no need to reload these
> registers when returning from interrupt.
>
> Introduce
in
https://git-scm.com/docs/git-format-patch]
url:
https://github.com/0day-ci/linux/commits/Nicholas-Piggin/KVM-PPC-Book3S-C-ify-the-P9-entry-exit-code/20210401-232743
base: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next
config: powerpc64-randconfig-r033-20210402 (attached
Le 30/03/2021 à 19:57, Daniel Walker a écrit :
This adds code to handle the generic command line changes.
The efi code appears that it doesn't benefit as much from this design
as it could.
For example, if you had a prepend command line with "nokaslr" then
you might be helpful to re-enable it
Le 30/03/2021 à 19:56, Daniel Walker a écrit :
This updates the powerpc code to use the CONFIG_GENERIC_CMDLINE
option.
This includes a scripted mass convert of the config files to use
the new generic cmdline. There is a bit of a trim effect here.
It would seems that some of the config
Le 30/03/2021 à 19:56, Daniel Walker a écrit :
There's only two users of strcpy and one is the command
line handling. The generic command line handling uses strlcpy
and it makes sense to convert this one other user to strlcpy to
keep prom_init size consistent.
Cc: xe-linux-exter...@cisco.com
Le 30/03/2021 à 19:56, Daniel Walker a écrit :
It looks like there's some seepage of cmdline stuff into
the generic device tree code. This conflicts with the
generic cmdline implementation so I remove it in the case
when that's enabled.
Cc: xe-linux-exter...@cisco.com
Signed-off-by: Ruslan
Le 30/03/2021 à 19:56, Daniel Walker a écrit :
This code allows architectures to use a generic builtin command line.
The state of the builtin command line options across architecture is
diverse. MIPS and X86 once has similar systems, then mips added some
options to allow extending the command
Laurent Dufour writes:
> Le 02/04/2021 à 15:34, Nathan Lynch a écrit :
>> Laurent Dufour writes:
>>> When a CPU is hot added, the CPU ids are taken from the available mask from
>>> the lower possible set. If that set of values was previously used for CPU
>>> attached to a different node, this
On 4/1/21 5:03 PM, Nicholas Piggin wrote:
> Commit f3c18e9342a44 ("KVM: PPC: Book3S HV: Use XICS hypercalls when
> running as a nested hypervisor") added nested HV tests in XICS
> hypercalls, but not all are required.
>
> * icp_eoi is only called by kvmppc_deliver_irq_passthru which is only
>
Le 26/03/2021 à 14:44, Christophe Leroy a écrit :
This converts the architecture to GENERIC_CMDLINE.
Signed-off-by: Christophe Leroy
---
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index e798e55915c2..fab84f62448c 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -16,6 +16,7 @@
Le 29/03/2021 à 03:35, Tan, Ley Foon a écrit :
-Original Message-
From: Christophe Leroy
Sent: Friday, March 26, 2021 9:45 PM
To: w...@kernel.org; danie...@cisco.com; r...@kernel.org;
dan...@gimpelevich.san-francisco.ca.us
Cc: linux-a...@vger.kernel.org;
Le 30/03/2021 à 19:27, Daniel Walker a écrit :
On Fri, Mar 26, 2021 at 01:44:48PM +, Christophe Leroy wrote:
This code provides architectures with a way to build command line
based on what is built in the kernel and what is handed over by the
bootloader, based on selected compile-time
in
https://git-scm.com/docs/git-format-patch]
url:
https://github.com/0day-ci/linux/commits/Nicholas-Piggin/KVM-PPC-Book3S-C-ify-the-P9-entry-exit-code/20210401-232743
base: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next
config: powerpc64-randconfig-s032-20210402
Le 26/03/2021 à 16:47, Rob Herring a écrit :
On Fri, Mar 26, 2021 at 7:44 AM Christophe Leroy
wrote:
This converts the architecture to GENERIC_CMDLINE.
Signed-off-by: Christophe Leroy
---
arch/arm/Kconfig | 38 +--
Le 26/03/2021 à 16:42, Rob Herring a écrit :
On Fri, Mar 26, 2021 at 7:44 AM Christophe Leroy
wrote:
This code provides architectures with a way to build command line
based on what is built in the kernel and what is handed over by the
bootloader, based on selected compile-time options.
Le 26/03/2021 à 16:26, Rob Herring a écrit :
On Fri, Mar 26, 2021 at 8:20 AM Christophe Leroy
wrote:
Le 26/03/2021 à 15:08, Andreas Schwab a écrit :
On Mär 26 2021, Christophe Leroy wrote:
diff --git a/arch/riscv/kernel/setup.c b/arch/riscv/kernel/setup.c
index
Le 26/03/2021 à 16:04, Rob Herring a écrit :
On Fri, Mar 26, 2021 at 7:44 AM Christophe Leroy
wrote:
The purpose of this series is to improve and enhance the
handling of kernel boot arguments.
It is first focussed on powerpc but also extends the capability
for other arches.
This is based
Le 26/03/2021 à 16:47, Rob Herring a écrit :
On Fri, Mar 26, 2021 at 7:44 AM Christophe Leroy
wrote:
This converts the architecture to GENERIC_CMDLINE.
Signed-off-by: Christophe Leroy
---
arch/arm/Kconfig | 38 +--
All architectures providing CONFIG_CMDLINE_EXTEND
are now converted to GENERIC_CMDLINE.
This configuration item is not used anymore, drop it.
Signed-off-by: Christophe Leroy
---
include/linux/cmdline.h | 2 +-
init/Kconfig| 6 --
2 files changed, 1 insertion(+), 7 deletions(-)
This converts the architecture to GENERIC_CMDLINE.
Signed-off-by: Christophe Leroy
---
arch/mips/Kconfig | 1 +
arch/mips/Kconfig.debug | 44 ---
arch/mips/configs/ar7_defconfig | 1 -
arch/mips/configs/bcm47xx_defconfig
This converts the architecture to GENERIC_CMDLINE.
Signed-off-by: Christophe Leroy
---
arch/x86/Kconfig| 45 ++---
arch/x86/kernel/setup.c | 17 ++--
2 files changed, 4 insertions(+), 58 deletions(-)
diff --git a/arch/x86/Kconfig
This converts the architecture to GENERIC_CMDLINE.
Signed-off-by: Christophe Leroy
---
arch/xtensa/Kconfig | 15 +--
arch/xtensa/configs/audio_kc705_defconfig | 1 -
arch/xtensa/configs/common_defconfig| 1 -
This converts the architecture to GENERIC_CMDLINE.
Signed-off-by: Christophe Leroy
---
arch/sparc/Kconfig | 18 +-
arch/sparc/prom/bootstr_64.c | 2 +-
2 files changed, 2 insertions(+), 18 deletions(-)
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index
This converts the architecture to GENERIC_CMDLINE.
Signed-off-by: Christophe Leroy
---
v4: Restore the removed 'endmenu' in Kconfig
---
arch/sh/Kconfig | 28 +
arch/sh/configs/ap325rxa_defconfig | 2 +-
This converts the architecture to GENERIC_CMDLINE.
Signed-off-by: Christophe Leroy
---
v4: Remove the message when forcing
---
arch/riscv/Kconfig| 44 +--
arch/riscv/kernel/setup.c | 7 +++
2 files changed, 4 insertions(+), 47 deletions(-)
diff
This converts the architecture to GENERIC_CMDLINE.
Signed-off-by: Christophe Leroy
---
v4: Added missing selection of CONFIG_GENERIC_CMDLINE in Kconfig
---
arch/nios2/Kconfig| 25 ++---
arch/nios2/kernel/setup.c | 13 -
2 files changed, 6 insertions(+),
This converts the architecture to GENERIC_CMDLINE.
Signed-off-by: Christophe Leroy
---
arch/openrisc/Kconfig | 10 +-
1 file changed, 1 insertion(+), 9 deletions(-)
diff --git a/arch/openrisc/Kconfig b/arch/openrisc/Kconfig
index 591acc5990dc..ca1d0f18fe16 100644
---
This converts the architecture to GENERIC_CMDLINE.
Signed-off-by: Christophe Leroy
---
arch/microblaze/Kconfig | 24 +---
arch/microblaze/configs/mmu_defconfig | 2 +-
arch/microblaze/kernel/head.S | 4 ++--
3 files changed, 4 insertions(+), 26
This converts the architecture to GENERIC_CMDLINE.
Signed-off-by: Christophe Leroy
---
arch/hexagon/Kconfig| 11 +--
arch/hexagon/kernel/setup.c | 10 ++
2 files changed, 3 insertions(+), 18 deletions(-)
diff --git a/arch/hexagon/Kconfig b/arch/hexagon/Kconfig
index
This converts the architecture to GENERIC_CMDLINE.
Signed-off-by: Christophe Leroy
---
arch/arm64/Kconfig | 33 +-
arch/arm64/kernel/idreg-override.c | 9
2 files changed, 5 insertions(+), 37 deletions(-)
diff --git a/arch/arm64/Kconfig
From: Daniel Walker
There's only two users of strcpy and one is the command
line handling. The generic command line handling uses strlcpy
and it makes sense to convert this one other user to strlcpy to
keep prom_init size consistent.
Cc: xe-linux-exter...@cisco.com
Signed-off-by: Daniel Walker
This updates the powerpc code to use the new cmdline building function.
The cmdline_build() defines a temporary string in __initdata.
powerpc uses __prombss instead at the moment, so we must
call cmdline_build() with destination different from the source
to allow GCC to optimise the temporary
This converts the architecture to GENERIC_CMDLINE.
Signed-off-by: Christophe Leroy
---
v4:
- Removed dependency to ATAGS
- Removed the message when forcing
---
arch/arm/Kconfig | 38 +--
arch/arm/kernel/atags_parse.c | 13 +++-
2 files
Most architectures have similar boot command line manipulation
options. This patchs adds the definition in init/Kconfig, gated by
CONFIG_HAVE_CMDLINE that the architectures can select to use them.
CONFIG_CMDLINE_EXTEND is understood differently by architectures.
For some of them it appends
Use cmdline building function in EFI.
EFI cannot use pr_err() and doesn't have a .init.data section,
so use the __cmdline_build() internal function and provides
both a source and a destination.
Remove the handling of too long command lines as it is handled
by the generic CMDLINE.
Signed-off-by:
This code provides architectures with a way to build command line
based on what is built in the kernel and what is handed over by the
bootloader, based on selected compile-time options.
Signed-off-by: Christophe Leroy
---
v3:
- Addressed comments from Will
- Added capability to have src == dst
During boot, x86 uses EFI driver. That driver is also used
by ARM.
In order to refactor the command line processing in that driver
in a following patch, rename CONFIG_CMDLINE_OVERRIDE by
CONFIG_CMDLINE_FORCE on the x86 in order to be similar
to ARM (and most other architectures).
Signed-off-by:
The purpose of this series is to improve and enhance the
handling of kernel boot arguments.
Current situation is that most if not all architectures are using
similar options to do some manupulation on command line arguments:
- Prepend built-in arguments in front of bootloader provided arguments
-
This patch uses the new cmdline building function to
concatenate the of provided cmdline with built-in parts
based on compile-time options.
Signed-off-by: Christophe Leroy
---
drivers/of/fdt.c | 23 ---
1 file changed, 4 insertions(+), 19 deletions(-)
diff --git
Thanks Nathan for reviewing this.
Le 02/04/2021 à 15:34, Nathan Lynch a écrit :
Hi Laurent,
Laurent Dufour writes:
When a CPU is hot added, the CPU ids are taken from the available mask from
the lower possible set. If that set of values was previously used for CPU
attached to a different
Hi Laurent,
Laurent Dufour writes:
> When a CPU is hot added, the CPU ids are taken from the available mask from
> the lower possible set. If that set of values was previously used for CPU
> attached to a different node, this seems to application like if these CPUs
> have migrated from a node to
> I gave the patch below a try and we are reaching the same results,
> even better. The simplest solution is always the best. Nick, you
> should send that single patch.
FYI, here are results in a KVM guests with pinned vCPUs.
* P9 DD2.2 - 2s * 64 threads - KVM guest :
On 4/1/21 2:50 PM, Nicholas Piggin wrote:
> Excerpts from Cédric Le Goater's message of April 1, 2021 12:45 am:
>> ipistorm [*] can be used to benchmark the raw interrupt rate of an
>> interrupt controller by measuring the number of IPIs a system can
>> sustain. When applied to the XIVE interrupt
Excerpts from Nicholas Piggin's message of April 2, 2021 1:03 am:
> Decrementer updates must always check for new irq work to avoid an
> irq work decrementer interrupt being lost.
>
> Add an API for this in the timer code so callers don't have to care
> about details.
Oh I forgot to update the
Excerpts from Cédric Le Goater's message of April 2, 2021 4:10 pm:
> On 4/2/21 4:41 AM, Nicholas Piggin wrote:
>> Starting with ISA v3.1, LPCR[AIL] no longer controls the interrupt
>> mode for HV=1 interrupts. Instead, a new LPCR[HAIL] bit is defined
>> which behaves like AIL=3 for HV interrupts
Excerpts from Alexey Kardashevskiy's message of April 2, 2021 2:36 pm:
>
>
> On 01/04/2021 21:35, Nicholas Piggin wrote:
>> Excerpts from Alexey Kardashevskiy's message of April 1, 2021 3:30 pm:
>>>
>>>
>>> On 3/23/21 12:02 PM, Nicholas Piggin wrote:
Almost all logic is moved to C, by
(Missed cc'ing Cc Peter in the original posting)
On Fri, Apr 02, 2021 at 11:07:54AM +0530, Gautham R. Shenoy wrote:
> From: "Gautham R. Shenoy"
>
> On POWER10 systems, the L2 cache is at the SMT4 small core level. The
> following commits ensure that L2 cache gets correctly discovered and
> the
From: "Gautham R. Shenoy"
On POWER10 systems, the L2 cache is at the SMT4 small core level. The
following commits ensure that L2 cache gets correctly discovered and
the Last-Level-Cache domain (LLC) is set to the SMT sched-domain.
790a166 powerpc/smp: Parse ibm,thread-groups with multiple
On 4/2/21 4:41 AM, Nicholas Piggin wrote:
> Starting with ISA v3.1, LPCR[AIL] no longer controls the interrupt
> mode for HV=1 interrupts. Instead, a new LPCR[HAIL] bit is defined
> which behaves like AIL=3 for HV interrupts when set.
Will QEMU need an update ?
Thanks,
C.
> Set HAIL on bare
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