On Sat, Sep 29, 2018 at 11:25:20PM -0700, Bin Meng wrote: > /* > - * Size of redzone that userspace is allowed to use below the stack > + * Size of redzone that kernel/userspace is allowed to use below the stack > * pointer. This is 288 in the 64-bit big-endian ELF ABI, and 512 in > * the new ELFv2 little-endian ABI, so we allow the larger amount. > - * > - * For kernel code we allow a 288-byte redzone, in order to conserve > - * kernel stack space; gcc currently only uses 288 bytes, and will > - * hopefully allow explicit control of the redzone size in future. > */
Btw: patches welcome! This will never be useful for userland code, so no one in GCC land is looking at this (we did not even know it is wanted). Segher
