arch.s390x.cpu.uaccess Module Reference

Functions
auto	arch::s390x::cpu::uaccess::copy_from_user (void *dst, u64 src, u64 len, u64 root_phys) noexcept -> i32
	Copy from user space (PRIMARY) to kernel space (HOME).
auto	arch::s390x::cpu::uaccess::copy_to_user (u64 dst, const void *src, u64 len, u64 root_phys) noexcept -> i32
	Copy from kernel space (HOME) to user space (PRIMARY).
template<u16 FixupType>
auto	arch::s390x::cpu::uaccess::mvcos (void *dst, const void *src, u64 &len, u64 oac) noexcept -> condition_code
	Execute a single MVCS instruction with exception-table fixup.
template<u16 FixupType>
auto	arch::s390x::cpu::uaccess::mvcos_copy (void *dst, const void *src, u64 len, u64 oac) noexcept -> i32
	Copy len bytes using MVCO with a given OAC pair. Loops in 4 KiB chunks when len > 4096 (CC 3 path).

Variables
constexpr u64	arch::s390x::cpu::uaccess::MVCOS_MAX_CHUNK = 4096ULL

Files
file	arch/s390x/cpu/uaccess.zcomponent/uaccess.cxxm
file	arch/s390x/cpu/uaccess.zcomponent/uaccess.cxx