git/linux-cryptodev-2.6
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git synced 2026-04-18 03:23:53 -04:00
Code Issues Packages Projects Releases Wiki Activity

arm64: mm: replace TIF_LAZY_MMU with is_lazy_mmu_mode_active()

Browse Source 
The generic lazy_mmu layer now tracks whether a task is in lazy MMU mode. 
As a result we no longer need a TIF flag for that purpose - let's use the
new is_lazy_mmu_mode_active() helper instead.

The explicit check for in_interrupt() is no longer necessary either as
is_lazy_mmu_mode_active() always returns false in interrupt context.

Link: https://lkml.kernel.org/r/20251215150323.2218608-11-kevin.brodsky@arm.com
Signed-off-by: Kevin Brodsky <kevin.brodsky@arm.com>
Acked-by: David Hildenbrand (Red Hat) <david@kernel.org>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Reviewed-by: Yeoreum Yun <yeoreum.yun@arm.com>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: Borislav Betkov <bp@alien8.de>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: David Hildenbrand <david@redhat.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jann Horn <jannh@google.com>
Cc: Juegren Gross <jgross@suse.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Thomas Gleinxer <tglx@linutronix.de>
Cc: Venkat Rao Bagalkote <venkat88@linux.ibm.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Kevin Brodsky
2025-12-15 15:03:19 +00:00
committed by Andrew Morton
parent 5ab2467495
commit 4dd9b4d7a8
2 changed files with 4 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
arch/arm64/include/asm/pgtable.h
View File

@@ -62,28 +62,16 @@ static inline void emit_pte_barriers(void)
static inline void queue_pte_barriers(void)
{
unsigned long flags;
if (in_interrupt()) {
emit_pte_barriers();
return;
}
flags = read_thread_flags();
if (flags & BIT(TIF_LAZY_MMU)) {
if (is_lazy_mmu_mode_active()) {
/* Avoid the atomic op if already set. */
if (!(flags & BIT(TIF_LAZY_MMU_PENDING)))
if (!test_thread_flag(TIF_LAZY_MMU_PENDING))
set_thread_flag(TIF_LAZY_MMU_PENDING);
} else {
emit_pte_barriers();
}
}
static inline void arch_enter_lazy_mmu_mode(void)
{
set_thread_flag(TIF_LAZY_MMU);
}
static inline void arch_enter_lazy_mmu_mode(void) {}
static inline void arch_flush_lazy_mmu_mode(void)
{
@@ -94,7 +82,6 @@ static inline void arch_flush_lazy_mmu_mode(void)
static inline void arch_leave_lazy_mmu_mode(void)
{
arch_flush_lazy_mmu_mode();
clear_thread_flag(TIF_LAZY_MMU);
}
#ifdef CONFIG_TRANSPARENT_HUGEPAGE