Large amounts of memory managed by the kmem driver may come in via CXL,
and it is often desirable to have the memmap for this memory on the new
memory itself.
Enroll kmem-managed memory for memmap_on_memory semantics if the dax
region originates via CXL. For non-CXL dax regions, retain the existin
The MHP_MEMMAP_ON_MEMORY flag for hotplugged memory is restricted to
'memblock_size' chunks of memory being added. Adding a larger span of
memory precludes memmap_on_memory semantics.
For users of hotplug such as kmem, large amounts of memory might get
added from the CXL subsystem. In some cases,
A review of the memmap_on_memory modifications to add_memory_resource()
revealed an instance of an open-coded kmemdup(). Replace it with
kmemdup().
Cc: Andrew Morton
Cc: David Hildenbrand
Cc: Michal Hocko
Cc: Oscar Salvador
Cc: Dan Williams
Reported-by: Dan Williams
Reviewed-by: David Hilden
The dax/kmem driver can potentially hot-add large amounts of memory
originating from CXL memory expanders, or NVDIMMs, or other 'device
memories'. There is a chance there isn't enough regular system memory
available to fit the memmap for this new memory. It's therefore
desirable, if all other condi
On Mon, 6 Nov 2023 22:06:17 -0500
Steven Rostedt wrote:
> On Tue, 7 Nov 2023 09:42:58 +0900
> Masami Hiramatsu (Google) wrote:
>
> > Got it. So does ftrace_regs need a placeholder for direct trampoline?
> > (Or, can we use a register to pass it?)
> > I think we don't need to clear it for return
The following changes since commit 0bb80ecc33a8fb5a682236443c1e740d5c917d1d:
Linux 6.6-rc1 (2023-09-10 16:28:41 -0700)
are available in the Git repository at:
https://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux.git
tags/rproc-v6.7
for you to fetch changes up to 3d8a18697ad83
On Tue, 7 Nov 2023 10:49:24 +0900
Masami Hiramatsu (Google) wrote:
> > I've changed this, because fprobe entry handler is not called via
> > fgraph without this. But maybe I have to set correct gops->ops.func
> > after init?
>
> I confirmed that this is right because it is introduced by
> 0c05
The following changes since commit 0bb80ecc33a8fb5a682236443c1e740d5c917d1d:
Linux 6.6-rc1 (2023-09-10 16:28:41 -0700)
are available in the Git repository at:
https://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux.git
tags/rpmsg-v6.7
for you to fetch changes up to 2a6e483ad0476
On Tue, 7 Nov 2023 09:42:58 +0900
Masami Hiramatsu (Google) wrote:
> Got it. So does ftrace_regs need a placeholder for direct trampoline?
> (Or, can we use a register to pass it?)
> I think we don't need to clear it for return_to_handler() but if
> `ftrace_regs` spec requires it, it is better to
On Mon, 06 Nov 2023 19:16:30 -0600, Haitao Huang
wrote:
On Mon, 06 Nov 2023 16:18:30 -0600, Huang, Kai
wrote:
> > +/**
> > + * sgx_epc_cgroup_try_charge() - hierarchically try to charge a
single
> > EPC page
> > + *
> > + * Returns EPC cgroup or NULL on success, -errno on failure.
>
On Mon, 6 Nov 2023 19:04:16 +0900
Masami Hiramatsu (Google) wrote:
> On Mon, 6 Nov 2023 01:10:10 +0900
> "Masami Hiramatsu (Google)" wrote:
>
> > From: Masami Hiramatsu (Google)
> >
> > Fix to initialize the ftrace_ops of fgraph_ops with ftrace_graph_func
> > instead of ftrace_stub.
>
> I'v
On Mon, 6 Nov 2023 01:08:32 +0900
"Masami Hiramatsu (Google)" wrote:
> From: Steven Rostedt (VMware)
>
> Allow for instances to have their own ftrace_ops part of the fgraph_ops that
> makes the funtion_graph tracer filter on the set_ftrace_filter file of the
> instance and not the top instance
On Mon, 06 Nov 2023 16:18:30 -0600, Huang, Kai wrote:
> > +/**
> > + * sgx_epc_cgroup_try_charge() - hierarchically try to charge a
single
> > EPC page
> > + *
> > + * Returns EPC cgroup or NULL on success, -errno on failure.
> > + */
> > +struct sgx_epc_cgroup *sgx_epc_cgroup_try_charge(vo
On Mon, 6 Nov 2023 11:37:10 -0500
Steven Rostedt wrote:
> On Mon, 6 Nov 2023 10:05:49 +0900
> Masami Hiramatsu (Google) wrote:
>
> > So for x86-64,
> >
> > - rdi, rsi, rcx, rdx, r8, r9, and rsp
> > - rax and rdx
> > - rbp
> >
> > (BTW, why orig_rax is cleared?)
>
> You mean from ftrace_ca
On Mon, 6 Nov 2023 17:28:11 -0500
Steven Rostedt wrote:
> On Sat, 4 Nov 2023 01:05:34 +0900
> "Masami Hiramatsu (Google)" wrote:
>
> > From: Masami Hiramatsu (Google)
> >
> > Fix to check the tracepoint event is not valid with $retval.
> > The commit 08c9306fc2e3 ("tracing/fprobe-event: Assu
On Sat, 4 Nov 2023 01:05:34 +0900
"Masami Hiramatsu (Google)" wrote:
> From: Masami Hiramatsu (Google)
>
> Fix to check the tracepoint event is not valid with $retval.
> The commit 08c9306fc2e3 ("tracing/fprobe-event: Assume fprobe is
> a return event by $retval") introduced automatic return p
On Mon, 2023-10-30 at 11:20 -0700, Haitao Huang wrote:
> +static int __init sgx_epc_cgroup_init(void)
> +{
> + struct misc_cg *cg;
> +
> + if (!boot_cpu_has(X86_FEATURE_SGX))
> + return 0;
> +
> + cg = misc_cg_root();
> + BUG_ON(!cg);
> +
> + return sgx_epc_cgroup_al
>
> > > +/**
> > > + * sgx_epc_cgroup_try_charge() - hierarchically try to charge a single
> > > EPC page
> > > + *
> > > + * Returns EPC cgroup or NULL on success, -errno on failure.
> > > + */
> > > +struct sgx_epc_cgroup *sgx_epc_cgroup_try_charge(void)
> > > +{
> > > + struct sgx_epc_cgroup
On Mon, 06 Nov 2023 06:09:45 -0600, Huang, Kai wrote:
On Mon, 2023-10-30 at 11:20 -0700, Haitao Huang wrote:
From: Kristen Carlson Accardi
Implement support for cgroup control of SGX Enclave Page Cache (EPC)
memory using the misc cgroup controller. EPC memory is independent
from normal syste
On Thu, Nov 02, 2023 at 12:27:13PM -0600, Vishal Verma wrote:
> A review of the memmap_on_memory modifications to add_memory_resource()
> revealed an instance of an open-coded kmemdup(). Replace it with
> kmemdup().
>
> Cc: Andrew Morton
> Cc: David Hildenbrand
> Cc: Michal Hocko
> Cc: Oscar Sa
On Mon, 6 Nov 2023 10:05:49 +0900
Masami Hiramatsu (Google) wrote:
> So for x86-64,
>
> - rdi, rsi, rcx, rdx, r8, r9, and rsp
> - rax and rdx
> - rbp
>
> (BTW, why orig_rax is cleared?)
You mean from ftrace_caller?
That's a "hack" to determine if we need to call the direct trampoline or
no
Add a section to Documentation/livepatch/module-elf-format.rst
describing how klp-convert works for fixing relocations.
Signed-off-by: Lukas Hruska
---
Documentation/livepatch/module-elf-format.rst | 67 +++
1 file changed, 67 insertions(+)
diff --git a/Documentation/livepatch/m
From: Josh Poimboeuf
Add a new livepatch sample in samples/livepatch/ to make use of symbols
that must be post-processed to enable load-time relocation resolution.
As the new sample is to be used as an example, it is annotated with
KLP_RELOC_SYMBOL macro.
The livepatch sample updates the functio
From: Josh Poimboeuf
Update the modpost program so that it does not warn about unresolved
symbols matching the expected format which will be then resolved by
klp-convert.
Signed-off-by: Josh Poimboeuf
Signed-off-by: Lukas Hruska
---
.gitignore| 1 +
Makefile
Livepatches need to access external symbols which can't be handled
by the normal relocation mechanism. It is needed for two types
of symbols:
+ Symbols which can be local for the original livepatched function.
The alternative implementation in the livepatch sees them
as external symbols.
From: Josh Poimboeuf
Define klp prefixes in include/uapi/linux/livepatch.h, and use them for
replacing hard-coded values in kernel/livepatch/core.c.
Signed-off-by: Josh Poimboeuf
Signed-off-by: Lukas Hruska
---
MAINTAINERS| 1 +
include/uapi/linux/livepatch.h | 15 +++
Summary
---
This is a significantly simplified version of the original klp-convert tool.
The klp-convert code has never got a proper review and also clean ups
were not easy. The last version was v7, see
https://lore.kernel.org/r/20230306140824.3858543-1-joe.lawre...@redhat.com
The main chan
There is an issue WRT charging proper mem_cgroups for backing pages once
per-cgroup reclamation is implemented.
Please apply the fix-up patch [1] on top of this patch or the series.
Thanks
Haitao
[1]
https://lore.kernel.org/all/20231106155859.7251-1-haitao.hu...@linux.intel.com/
Enclave Page Cache(EPC) memory can be swapped out to regular system
memory, and the consumed memory should be charged to a proper
mem_cgroup. Currently the selection of mem_cgroup to charge is done in
sgx_encl_get_mem_cgroup(). But it only considers two contexts in which
the swapping can be done: n
On Sun, 05 Nov 2023 21:26:44 -0600, Jarkko Sakkinen
wrote:
On Mon, 2023-10-30 at 11:20 -0700, Haitao Huang wrote:
SGX Enclave Page Cache (EPC) memory allocations are separate from
normal RAM allocations, and
are managed solely by the SGX subsystem. The existing cgroup memory
controller ca
On 11/6/2023 1:58 PM, Neil Armstrong wrote:
The current memory region assign only supports a single
memory region.
But new platforms introduces more regions to make the
memory requirements more flexible for various use cases.
Those new platforms also shares the memory region between the
DSP a
On Mon, Nov 06, 2023 at 09:47:08PM +0900, Masami Hiramatsu wrote:
> On Mon, 6 Nov 2023 11:19:32 +0100
> Peter Zijlstra wrote:
>
> > On Mon, Nov 06, 2023 at 09:38:50AM +0900, Masami Hiramatsu wrote:
> > > On Sun, 5 Nov 2023 18:34:09 -0500
> > > Steven Rostedt wrote:
> > >
> > > > On Sun, 5 Nov 2
On Mon, 6 Nov 2023 11:19:32 +0100
Peter Zijlstra wrote:
> On Mon, Nov 06, 2023 at 09:38:50AM +0900, Masami Hiramatsu wrote:
> > On Sun, 5 Nov 2023 18:34:09 -0500
> > Steven Rostedt wrote:
> >
> > > On Sun, 5 Nov 2023 18:33:01 -0500
> > > Steven Rostedt wrote:
> > >
> > > > For x86_64, that wo
On Mon, 2023-10-30 at 11:20 -0700, Haitao Huang wrote:
> From: Kristen Carlson Accardi
>
> Implement support for cgroup control of SGX Enclave Page Cache (EPC)
> memory using the misc cgroup controller. EPC memory is independent
> from normal system memory, e.g. must be reserved at boot from RAM
On Mon, Nov 06, 2023 at 09:38:50AM +0900, Masami Hiramatsu wrote:
> On Sun, 5 Nov 2023 18:34:09 -0500
> Steven Rostedt wrote:
>
> > On Sun, 5 Nov 2023 18:33:01 -0500
> > Steven Rostedt wrote:
> >
> > > For x86_64, that would be:
> > >
> > > rdi, rsi, rdx, r8, r9, rsp
> >
> > I missed rcx.
>
On Mon, 6 Nov 2023 01:10:10 +0900
"Masami Hiramatsu (Google)" wrote:
> From: Masami Hiramatsu (Google)
>
> Fix to initialize the ftrace_ops of fgraph_ops with ftrace_graph_func
> instead of ftrace_stub.
I've changed this, because fprobe entry handler is not called via
fgraph without this. But
Add DSP Peripheral Authentication Service support for the SM8650 platform.
Reviewed-by: Dmitry Baryshkov
Signed-off-by: Neil Armstrong
---
drivers/remoteproc/qcom_q6v5_pas.c | 50 ++
1 file changed, 50 insertions(+)
diff --git a/drivers/remoteproc/qcom_q6v5_
Document the DSP Peripheral Authentication Service on the SM8650 Platform.
Reviewed-by: Krzysztof Kozlowski
Signed-off-by: Neil Armstrong
---
.../bindings/remoteproc/qcom,sm8550-pas.yaml | 44 +-
1 file changed, 43 insertions(+), 1 deletion(-)
diff --git a/Documentati
The current memory region assign only supports a single
memory region.
But new platforms introduces more regions to make the
memory requirements more flexible for various use cases.
Those new platforms also shares the memory region between the
DSP and HLOS.
To handle this, make the region assign
Add the bindings and driver changes for DSP support on the
SM8650 platform in order to enable the aDSP, cDSP and MPSS
subsystems to boot.
Compared to SM8550, where SM8650 uses the same dual firmware files,
(dtb file and main firmware) the memory zones requirement has changed:
- cDSP: now requires
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