From ef6458b1b6ca3fdb991ce4182e981a88d4c58c0f Mon Sep 17 00:00:00 2001 From: Peter Collingbourne Date: Thu, 3 Nov 2022 18:10:37 -0700 Subject: mm: Add PG_arch_3 page flag As with PG_arch_2, this flag is only allowed on 64-bit architectures due to the shortage of bits available. It will be used by the arm64 MTE code in subsequent patches. Signed-off-by: Peter Collingbourne Cc: Will Deacon Cc: Marc Zyngier Cc: Steven Price [catalin.marinas@arm.com: added flag preserving in __split_huge_page_tail()] Signed-off-by: Catalin Marinas Reviewed-by: Steven Price Signed-off-by: Marc Zyngier Link: https://lore.kernel.org/r/20221104011041.290951-5-pcc@google.com --- fs/proc/page.c | 1 + 1 file changed, 1 insertion(+) (limited to 'fs/proc/page.c') diff --git a/fs/proc/page.c b/fs/proc/page.c index 882525c8e94c..6249c347809a 100644 --- a/fs/proc/page.c +++ b/fs/proc/page.c @@ -221,6 +221,7 @@ u64 stable_page_flags(struct page *page) u |= kpf_copy_bit(k, KPF_ARCH, PG_arch_1); #ifdef CONFIG_ARCH_USES_PG_ARCH_X u |= kpf_copy_bit(k, KPF_ARCH_2, PG_arch_2); + u |= kpf_copy_bit(k, KPF_ARCH_3, PG_arch_3); #endif return u; -- cgit v1.2.3