On Wed, Jun 19, 2019 at 04:45:02PM +0200, Andrey Konovalov wrote: > On Wed, Jun 12, 2019 at 1:43 PM Andrey Konovalov <andreyknvl@xxxxxxxxxx> wrote: > > From: Catalin Marinas <catalin.marinas@xxxxxxx> > > > > It is not desirable to relax the ABI to allow tagged user addresses into > > the kernel indiscriminately. This patch introduces a prctl() interface > > for enabling or disabling the tagged ABI with a global sysctl control > > for preventing applications from enabling the relaxed ABI (meant for > > testing user-space prctl() return error checking without reconfiguring > > the kernel). The ABI properties are inherited by threads of the same > > application and fork()'ed children but cleared on execve(). > > > > The PR_SET_TAGGED_ADDR_CTRL will be expanded in the future to handle > > MTE-specific settings like imprecise vs precise exceptions. > > > > Signed-off-by: Catalin Marinas <catalin.marinas@xxxxxxx> > > Catalin, would you like to do the requested changes to this patch > yourself and send it to me or should I do that? I'll send you an updated version this week. -- Catalin
