The scripts rely on cgroup-tools package from libcgroup [1].
To run selftests for epc cgroup:
sudo ./run_epc_cg_selftests.sh
With different cgroups, the script starts one or multiple concurrent SGX
selftests, each to run one unclobbered_vdso_oversubscribed test.
Each of such test tries to load
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 and
cannot be converted between EPC and normal memory while the
From: Sean Christopherson
Add initial documentation of how to regulate the distribution of
SGX Enclave Page Cache (EPC) memory via the Miscellaneous cgroup
controller.
Signed-off-by: Sean Christopherson
Co-developed-by: Kristen Carlson Accardi
Signed-off-by: Kristen Carlson Accardi
From: Sean Christopherson
Add wrappers where a direct references to the global LRU list in the
reclaimer functions. To support multiple LRU lists (one per EPC
cgroup) later, only make changes inside these wrappers.
Signed-off-by: Sean Christopherson
Co-developed-by: Kristen Carlson Accardi
From: Sean Christopherson
Move the isolation loop into a helper, sgx_isolate_pages(), in
preparation for existence of multiple LRUs. Expose the helper to other
SGX code so that it can be called from the EPC cgroup code, e.g., to
isolate pages from a single cgroup LRU. Exposing the isolation loop
From: Sean Christopherson
Adjust and expose the top-level reclaim function as
sgx_reclaim_epc_pages() for use by the upcoming EPC cgroup, which will
initiate reclaim to enforce the max limit.
Make these adjustments to the function signature.
1) To take a parameter that specifies the number of
From: Sean Christopherson
Two types of owners of struct sgx_epc_page, 'sgx_encl' for VA pages and
'sgx_encl_page' can be stored in the previously introduced union field.
OOM support for cgroups requires that the owner needs to be identified
when selecting pages from the unreclaimable list.
From: Sean Christopherson
When an OOM event occurs, all pages associated with an enclave will need
to be freed, including pages that are not currently tracked by the
cgroup LRU lists.
Add a new "unreclaimable" list to the sgx_epc_lru_lists struct and
update the "sgx_record/drop_epc_pages()"
From: Sean Christopherson
Introduce the OOM path for killing an enclave with a reclaimer that is no
longer able to reclaim enough EPC pages. Find a victim enclave, which
will be an enclave with only "unreclaimable" EPC pages left in the
cgroup LRU lists. Once a victim is identified, mark the
From: Sean Christopherson
In a later patch, when a cgroup has exceeded the max capacity for EPC
pages, it may need to identify and OOM kill a less active enclave to
make room for other enclaves within the same group. Such a victim
enclave would have no active pages other than the unreclaimable
From: Sean Christopherson
Change sgx_reclaim_pages() to use a list rather than an array for
storing the epc_pages which will be reclaimed. This change is needed
to transition to the LRU implementation for EPC cgroup support.
When the EPC cgroup is implemented, the reclaiming process will do a
From: Sean Christopherson
Add RECLAIM_IN_PROGRESS state to not rely on list_empty(_page->list)
to determine if an EPC page is selected as a reclaiming candidate.
When a page is being reclaimed from the page pool (sgx_global_lru),
there is an intermediate stage where a page may have been
Use the lower 3 bits in the flags field of sgx_epc_page struct to
track EPC states in its life cycle and define an enum for possible
states. More state(s) will be added later.
Signed-off-by: Haitao Huang
---
V4:
- No changes other than required for patch reordering.
V3:
- This is new in V3 to
From: Sean Christopherson
Replace sgx_mark_page_reclaimable() and sgx_unmark_page_reclaimable()
with sgx_record_epc_page() and sgx_drop_epc_page(). The
sgx_record_epc_page() function adds the epc_page to the "reclaimable"
list in the sgx_epc_lru_lists struct, while sgx_drop_epc_page() removes
From: Sean Christopherson
Introduce a data structure to wrap the existing reclaimable list and its
spinlock. Each cgroup later will have one instance of this structure to
track EPC pages allocated for processes associated with the same cgroup.
Just like the global SGX reclaimer (ksgxd), an EPC
From: Sean Christopherson
All EPC pages of enclaves including Version Array (VA) and SGX Enclave
Control Structure (SECS) will be tracked in sgx_epc_lru_lists structs,
one per cgroup. For now just replace the existing sgx_active_page_list
in the reclaimer and its spinlock with a global
From: Kristen Carlson Accardi
Add SGX EPC memory, MISC_CG_RES_SGX_EPC, to be a valid resource type
for the misc controller.
Add per resource type private data so that SGX can store additional per
cgroup data in misc_cg->misc_cg_res[MISC_CG_RES_SGX_EPC].
Export misc_cg_root() so the SGX driver
From: Kristen Carlson Accardi
The misc cgroup controller (subsystem) currently does not perform
resource type specific action for Cgroups Subsystem State (CSS) events:
the 'css_alloc' event when a cgroup is created and the 'css_free' event
when a cgroup is destroyed, or in event of user writing
SGX EPC memory allocations are separate from normal RAM allocations, and
are managed solely by the SGX subsystem. The existing cgroup memory
controller cannot be used to limit or account for SGX EPC memory, which is
a desirable feature in some environments, e.g., support for pod level
control in a
Add pin <-> wakeirq mappings to allow for waking up the AP from sleep
through MPM-connected pins.
Signed-off-by: Matti Lehtimäki
---
drivers/pinctrl/qcom/pinctrl-msm8226.c | 12
1 file changed, 12 insertions(+)
diff --git a/drivers/pinctrl/qcom/pinctrl-msm8226.c
Add pin <-> wakeirq mappings to allow for waking up the AP from sleep
through MPM-connected pins.
Signed-off-by: Matti Lehtimäki
---
drivers/pinctrl/qcom/pinctrl-msm8x74.c | 12
1 file changed, 12 insertions(+)
diff --git a/drivers/pinctrl/qcom/pinctrl-msm8x74.c
This series adds the MPM wakeirq mappings for MSM8226 and MSM8974.
Matti Lehtimäki (2):
pinctrl: qcom: msm8226: Add MPM pin mappings
pinctrl: qcom: msm8974: Add MPM pin mappings
drivers/pinctrl/qcom/pinctrl-msm8226.c | 12
drivers/pinctrl/qcom/pinctrl-msm8x74.c | 12
On Wed, 2023-09-20 at 07:37 +0200, Tomas Glozar wrote:
> nd_region_acquire_lane uses get_cpu, which disables preemption. This is
> an issue on PREEMPT_RT kernels, since btt_write_pg and also
> nd_region_acquire_lane itself take a spin lock, resulting in BUG:
> sleeping function called from invalid
From: "Steven Rostedt (Google)"
Using the following code with libtracefs:
int dfd;
// create the directory events/kprobes/kp1
tracefs_kprobe_raw(NULL, "kp1", "schedule_timeout", "time=$arg1");
// Open the kprobes directory
dfd =
On Tue, Sep 19, 2023 at 02:59:12PM +0200, Clément Léger wrote:
>
>
> On 14/09/2023 19:29, Steven Rostedt wrote:
> > On Thu, 14 Sep 2023 13:17:00 -0400
> > Steven Rostedt wrote:
> >
> >> Now lets look at big endian layout:
> >>
> >> uaddr = 0xbeef0004
> >> enabler = 1;
> >>
> >> memory at
On Tue, Sep 19, 2023 at 02:59:12PM +0200, Clément Léger wrote:
>
>
> On 14/09/2023 19:29, Steven Rostedt wrote:
> > On Thu, 14 Sep 2023 13:17:00 -0400
> > Steven Rostedt wrote:
> >
> >> Now lets look at big endian layout:
> >>
> >> uaddr = 0xbeef0004
> >> enabler = 1;
> >>
> >> memory at
Hi Mike,
On 18/09/2023 09:29, Mike Rapoport wrote:
From: "Mike Rapoport (IBM)"
The memory allocations for kprobes and BPF on RISC-V are not placed in
the modules area and these custom allocations are implemented with
overrides of alloc_insn_page() and bpf_jit_alloc_exec().
Slightly reorder
Hi Mike,
Le 18/09/2023 à 09:29, Mike Rapoport a écrit :
> From: "Mike Rapoport (IBM)"
>
> powerpc overrides kprobes::alloc_insn_page() to remove writable
> permissions when STRICT_MODULE_RWX is on.
>
> Add definition of EXECMEM_KRPOBES to execmem_params to allow using the
> generic
Le 22/09/2023 à 10:55, Song Liu a écrit :
> On Fri, Sep 22, 2023 at 12:17 AM Christophe Leroy
> wrote:
>>
>>
>>
>> Le 22/09/2023 à 00:52, Song Liu a écrit :
>>> On Mon, Sep 18, 2023 at 12:31 AM Mike Rapoport wrote:
>>> [...]
diff --git a/include/linux/execmem.h
In linux-modules@v.k.o probably some more experts can comment on this:
On Fri, Sep 15, 2023 at 12:15:39PM +0200, Martin Nybo Andersen wrote:
> Kmod is now using the kernel decompressor which doesn't handle CRC64
> and dictionaries larger than 1MiB.
>
> Fixes:
On Fri, Sep 22, 2023 at 12:17 AM Christophe Leroy
wrote:
>
>
>
> Le 22/09/2023 à 00:52, Song Liu a écrit :
> > On Mon, Sep 18, 2023 at 12:31 AM Mike Rapoport wrote:
> >>
> > [...]
> >> diff --git a/include/linux/execmem.h b/include/linux/execmem.h
> >> index 519bdfdca595..09d45ac786e9 100644
>
Le 22/09/2023 à 00:52, Song Liu a écrit :
> On Mon, Sep 18, 2023 at 12:31 AM Mike Rapoport wrote:
>>
> [...]
>> diff --git a/include/linux/execmem.h b/include/linux/execmem.h
>> index 519bdfdca595..09d45ac786e9 100644
>> --- a/include/linux/execmem.h
>> +++ b/include/linux/execmem.h
>> @@ -29,6
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