Searched hist:"2122 a833316f2f3f6ddc78429fa67ef6d3c86636" (Results 1 – 3 of 3) sorted by relevance
| /openbmc/linux/arch/arm64/tools/ |
| H A D | cpucaps | diff 2122a833316f2f3f6ddc78429fa67ef6d3c86636 Tue Jun 08 13:02:55 CDT 2021 Will Deacon <will@kernel.org> arm64: Allow mismatched 32-bit EL0 support
When confronted with a mixture of CPUs, some of which support 32-bit
applications and others which don't, we quite sensibly treat the system
as 64-bit only for userspace and prevent execve() of 32-bit binaries.
Unfortunately, some crazy folks have decided to build systems like this
with the intention of running 32-bit applications, so relax our
sanitisation logic to continue to advertise 32-bit support to userspace
on these systems and track the real 32-bit capable cores in a cpumask
instead. For now, the default behaviour remains but will be tied to
a command-line option in a later patch.
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Link: https://lore.kernel.org/r/20210608180313.11502-3-will@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
|
| /openbmc/linux/arch/arm64/include/asm/ |
| H A D | cpufeature.h | diff 2122a833316f2f3f6ddc78429fa67ef6d3c86636 Tue Jun 08 13:02:55 CDT 2021 Will Deacon <will@kernel.org> arm64: Allow mismatched 32-bit EL0 support
When confronted with a mixture of CPUs, some of which support 32-bit
applications and others which don't, we quite sensibly treat the system
as 64-bit only for userspace and prevent execve() of 32-bit binaries.
Unfortunately, some crazy folks have decided to build systems like this
with the intention of running 32-bit applications, so relax our
sanitisation logic to continue to advertise 32-bit support to userspace
on these systems and track the real 32-bit capable cores in a cpumask
instead. For now, the default behaviour remains but will be tied to
a command-line option in a later patch.
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Link: https://lore.kernel.org/r/20210608180313.11502-3-will@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
|
| /openbmc/linux/arch/arm64/kernel/ |
| H A D | cpufeature.c | diff 2122a833316f2f3f6ddc78429fa67ef6d3c86636 Tue Jun 08 13:02:55 CDT 2021 Will Deacon <will@kernel.org> arm64: Allow mismatched 32-bit EL0 support
When confronted with a mixture of CPUs, some of which support 32-bit
applications and others which don't, we quite sensibly treat the system
as 64-bit only for userspace and prevent execve() of 32-bit binaries.
Unfortunately, some crazy folks have decided to build systems like this
with the intention of running 32-bit applications, so relax our
sanitisation logic to continue to advertise 32-bit support to userspace
on these systems and track the real 32-bit capable cores in a cpumask
instead. For now, the default behaviour remains but will be tied to
a command-line option in a later patch.
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Link: https://lore.kernel.org/r/20210608180313.11502-3-will@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
|