Currently Ubuntu kernel has this kernel config disabled.
But in some cases, Intel's Sapphire Rapids High Bandwith
Memory (SPR-HBM) needs this option.
Memory bandwidth has been a bottleneck of increasingly memory bound
workloads. Sapphire Rapids plus HBM is specifically targeted to
cater to these workloads, traditionally served using overprovisioning
of memory devices.
Signed-off-by: Michael Reed <email address hidden>
UBUNTU: [Packaging] get rid of unnecessary artifacts in linux-headers
There is no sane reason to ship .o and .cmd artifacts in linux-headers,
so simply drop them (this allows to save ~25MB in the latest
linux-headers-generic).
Moreover, strip Rust's libmacros.so shipped in linux-headers to reduce
the size even more.
Signed-off-by: Andrea Righi <email address hidden>
UBUNTU: SAUCE: selftests/bpf: ignore pointer types check with clang
Building bpf selftests with clang can trigger errors like the following:
CLNG-BPF [test_maps] bpf_iter_netlink.bpf.o
progs/bpf_iter_netlink.c:32:4: error: incompatible pointer types assigning to 'struct sock *' from 'struct sock___17 *' [-Werror,-Wincompatible-pointer-types]
s = &nlk->sk;
^ ~~~~~~~~
1 error generated.
This is due to the fact that bpftool emits duplicate data types with
different names in vmlinux.h (i.e., `struct sock` in this case) and
these types, despite having a different name, represent in fact the same
object.
Add -Wno-incompatible-pointer-types to CLANG_CLAGS to prevent these
errors.
(cherry picked from https://<email address hidden>/T/#u)
Signed-off-by: Andrea Righi <email address hidden>
Instead of using the SMBIOS type 1 record 'family' field, which is often
modified by OEMs, use the type 4 'processor ID' and 'processor version'
fields, which are set to a small set of probe-able values on all known
Ampere EFI systems in the field.
Fixes: 550b33cfd4452968 ("arm64: efi: Force the use of ...")
Tested-by: Andrea Righi <email address hidden>
Signed-off-by: Ard Biesheuvel <email address hidden>
(cherry picked from commit eb684408f3ea4856639675d6465f0024e498e4b1)
Signed-off-by: Andrea Righi <email address hidden>
f915c2d...
by
Ard Biesheuvel <email address hidden>
efi/libstub: smbios: Use length member instead of record struct size
The type 1 SMBIOS record happens to always be the same size, but there
are other record types which have been augmented over time, and so we
should really use the length field in the header to decide where the
string table starts.
Fixes: 550b33cfd4452968 ("arm64: efi: Force the use of ...")
Signed-off-by: Ard Biesheuvel <email address hidden>
Signed-off-by: Andrea Righi <email address hidden>
