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From: Byungchul Park <byungchul@sk.com>
To: Matthew Wilcox <willy@infradead.org>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	kernel_team@skhynix.com, akpm@linux-foundation.org,
	ying.huang@intel.com, namit@vmware.com, xhao@linux.alibaba.com,
	mgorman@techsingularity.net, hughd@google.com, david@redhat.com,
	peterz@infradead.org, luto@kernel.org, tglx@linutronix.de,
	mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com
Subject: Re: [v4 2/3] mm: Defer TLB flush by keeping both src and dst folios at migration
Date: Mon, 15 Jan 2024 16:55:35 +0900	[thread overview]
Message-ID: <20240115075535.GA56305@system.software.com> (raw)
In-Reply-To: <ZUzuUf7JfhybYBgg@casper.infradead.org>

On Thu, Nov 09, 2023 at 02:36:01PM +0000, Matthew Wilcox wrote:
> On Thu, Nov 09, 2023 at 01:59:07PM +0900, Byungchul Park wrote:
> > +++ b/include/linux/page-flags.h
> > @@ -136,6 +136,7 @@ enum pageflags {
> >  	PG_arch_2,
> >  	PG_arch_3,
> >  #endif
> > +	PG_migrc,		/* Page is under migrc's control */
> >  	__NR_PAGEFLAGS,
> 
> Yeah; no.  We're out of page flags.  And CXL is insufficiently

I won't use an additional page flag any more.

Thanks.
	Byungchul



  parent reply	other threads:[~2024-01-15  7:55 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-11-09  4:59 [v4 0/3] Reduce TLB flushes under some specific conditions Byungchul Park
2023-11-09  4:59 ` [v4 1/3] mm/rmap: Recognize read-only TLB entries during batched TLB flush Byungchul Park
2023-11-09 20:26   ` kernel test robot
2023-11-09  4:59 ` [v4 2/3] mm: Defer TLB flush by keeping both src and dst folios at migration Byungchul Park
2023-11-09 14:36   ` Matthew Wilcox
2023-11-10  1:29     ` Byungchul Park
2024-01-15  7:55     ` Byungchul Park [this message]
2023-11-09 17:09   ` kernel test robot
2023-11-09 19:07   ` kernel test robot
2023-11-09  4:59 ` [v4 3/3] mm: Pause migrc mechanism at high memory pressure Byungchul Park
2023-11-09  5:20 ` [v4 0/3] Reduce TLB flushes under some specific conditions Huang, Ying
2023-11-10  1:32   ` Byungchul Park
2023-11-15  2:57   ` Byungchul Park
2023-11-09 14:26 ` Dave Hansen
2023-11-10  1:08   ` Byungchul Park
2023-11-15  6:43   ` Byungchul Park
2024-01-15  7:58   ` Byungchul Park

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