Kernel/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2025-01-04 04:06:26 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

arm64: entry: consolidate entry/exit helpers

Browse Source 
To make the various entry/exit helpers easier to understand and easier
to compare, this patch moves all the entry/exit helpers to be adjacent
at the top of entry-common.c, rather than being spread out throughout
the file.

There should be no functional change as a result of this patch.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: James Morse <james.morse@arm.com>
Cc: Joey Gouly <joey.gouly@arm.com>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Will Deacon <will@kernel.org>
Reviewed-by: Joey Gouly <joey.gouly@arm.com>
Link: https://lore.kernel.org/r/20210802140733.52716-2-mark.rutland@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Mark Rutland 2021-08-02 15:07:30 +01:00 committed by Catalin Marinas
parent ff1176468d
commit 46a2b02d23
1 changed files with 42 additions and 42 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

84
arch/arm64/kernel/entry-common.c
View File

@ -75,6 +75,24 @@ static void noinstr exit_to_kernel_mode(struct pt_regs *regs)
}
}
asmlinkage void noinstr enter_from_user_mode(void)
{
lockdep_hardirqs_off(CALLER_ADDR0);
CT_WARN_ON(ct_state() != CONTEXT_USER);
user_exit_irqoff();
trace_hardirqs_off_finish();
}
asmlinkage void noinstr exit_to_user_mode(void)
{
mte_check_tfsr_exit();
trace_hardirqs_on_prepare();
lockdep_hardirqs_on_prepare(CALLER_ADDR0);
user_enter_irqoff();
lockdep_hardirqs_on(CALLER_ADDR0);
}
static void noinstr arm64_enter_nmi(struct pt_regs *regs)
{
regs->lockdep_hardirqs = lockdep_hardirqs_enabled();
@ -105,6 +123,30 @@ static void noinstr arm64_exit_nmi(struct pt_regs *regs)
__nmi_exit();
}
static void noinstr arm64_enter_el1_dbg(struct pt_regs *regs)
{
regs->lockdep_hardirqs = lockdep_hardirqs_enabled();
lockdep_hardirqs_off(CALLER_ADDR0);
rcu_nmi_enter();
trace_hardirqs_off_finish();
}
static void noinstr arm64_exit_el1_dbg(struct pt_regs *regs)
{
bool restore = regs->lockdep_hardirqs;
if (restore) {
trace_hardirqs_on_prepare();
lockdep_hardirqs_on_prepare(CALLER_ADDR0);
}
rcu_nmi_exit();
if (restore)
lockdep_hardirqs_on(CALLER_ADDR0);
}
static void noinstr enter_el1_irq_or_nmi(struct pt_regs *regs)
{
if (IS_ENABLED(CONFIG_ARM64_PSEUDO_NMI) && !interrupts_enabled(regs))
@ -265,30 +307,6 @@ static void noinstr el1_undef(struct pt_regs *regs)
exit_to_kernel_mode(regs);
}
static void noinstr arm64_enter_el1_dbg(struct pt_regs *regs)
{
regs->lockdep_hardirqs = lockdep_hardirqs_enabled();
lockdep_hardirqs_off(CALLER_ADDR0);
rcu_nmi_enter();
trace_hardirqs_off_finish();
}
static void noinstr arm64_exit_el1_dbg(struct pt_regs *regs)
{
bool restore = regs->lockdep_hardirqs;
if (restore) {
trace_hardirqs_on_prepare();
lockdep_hardirqs_on_prepare(CALLER_ADDR0);
}
rcu_nmi_exit();
if (restore)
lockdep_hardirqs_on(CALLER_ADDR0);
}
static void noinstr el1_dbg(struct pt_regs *regs, unsigned long esr)
{
unsigned long far = read_sysreg(far_el1);
@ -382,24 +400,6 @@ asmlinkage void noinstr el1h_64_error_handler(struct pt_regs *regs)
arm64_exit_nmi(regs);
}
asmlinkage void noinstr enter_from_user_mode(void)
{
lockdep_hardirqs_off(CALLER_ADDR0);
CT_WARN_ON(ct_state() != CONTEXT_USER);
user_exit_irqoff();
trace_hardirqs_off_finish();
}
asmlinkage void noinstr exit_to_user_mode(void)
{
mte_check_tfsr_exit();
trace_hardirqs_on_prepare();
lockdep_hardirqs_on_prepare(CALLER_ADDR0);
user_enter_irqoff();
lockdep_hardirqs_on(CALLER_ADDR0);
}
static void noinstr el0_da(struct pt_regs *regs, unsigned long esr)
{
unsigned long far = read_sysreg(far_el1);