Linus Torvalds writes: (Summary) We should encourage people to always send at
least the cover-page to everybody who gets cc'd, even if they don't
get the whole series.
get the whole series.
Anyway, to repeat: the calling convention for x86-64 system call wrappers will be to just pass in "struct pt_regs", and the system call wrapper itself will take the arguments from there.
wrapper itself will take the arguments from there.
That means that we won't have random user space contents in registers that can leak deep down the call chain.
get the whole series.
Anyway, to repeat: the calling convention for x86-64 system call wrappers will be to just pass in "struct pt_regs", and the system call wrapper itself will take the arguments from there.
wrapper itself will take the arguments from there.
That means that we won't have random user space contents in registers that can leak deep down the call chain.