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charset=us-ascii Content-Disposition: inline In-Reply-To: <20240403234054.2020347-4-debug@rivosinc.com> X-Rspamd-Queue-Id: 469431C000E X-Rspam-User: X-Rspamd-Server: rspam12 X-Stat-Signature: ugb6donmnryiuqccn9uto3bk5k9z8wtk X-HE-Tag: 1715380616-874812 X-HE-Meta: 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 YHZzkJrY 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000006, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Wed, Apr 03, 2024 at 04:34:51PM -0700, Deepak Gupta wrote: > riscv will need an implementation for exit_thread to clean up shadow stack > when thread exits. If current thread had shadow stack enabled, shadow > stack is allocated by default for any new thread. > > Signed-off-by: Deepak Gupta > --- > arch/riscv/Kconfig | 1 + > arch/riscv/kernel/process.c | 5 +++++ > 2 files changed, 6 insertions(+) > > diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig > index e3142ce531a0..7e0b2bcc388f 100644 > --- a/arch/riscv/Kconfig > +++ b/arch/riscv/Kconfig > @@ -149,6 +149,7 @@ config RISCV > select HAVE_SAMPLE_FTRACE_DIRECT_MULTI > select HAVE_STACKPROTECTOR > select HAVE_SYSCALL_TRACEPOINTS > + select HAVE_EXIT_THREAD > select HOTPLUG_CORE_SYNC_DEAD if HOTPLUG_CPU > select IRQ_DOMAIN > select IRQ_FORCED_THREADING > diff --git a/arch/riscv/kernel/process.c b/arch/riscv/kernel/process.c > index d3109557f951..ce577cdc2af3 100644 > --- a/arch/riscv/kernel/process.c > +++ b/arch/riscv/kernel/process.c > @@ -200,6 +200,11 @@ int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src) > return 0; > } > > +void exit_thread(struct task_struct *tsk) > +{ > + > +} > + > int copy_thread(struct task_struct *p, const struct kernel_clone_args *args) > { > unsigned long clone_flags = args->flags; > -- > 2.43.2 > Reviewed-by: Charlie Jenkins