RE: [PATCH] arm64: mm: add support for memmap kernel parameters

2020-11-19 Thread Song Bao Hua (Barry Song)
@vger.kernel.org; > a...@linux-foundation.org; linux-arm-ker...@lists.infradead.org > Subject: Re: [PATCH] arm64: mm: add support for memmap kernel parameters > > On Wed, Nov 18, 2020 at 11:55:33PM +, Song Bao Hua (Barry Song) > wrote: > > > From: Ard Biesheuvel [mailto:a..

Re: [PATCH] arm64: mm: add support for memmap kernel parameters

2020-11-18 Thread Mike Rapoport
On Wed, Nov 18, 2020 at 11:55:33PM +, Song Bao Hua (Barry Song) wrote: > > From: Ard Biesheuvel [mailto:a...@kernel.org] > > > > On Wed, 18 Nov 2020 at 21:27, Song Bao Hua (Barry Song) > > wrote: > > > > > > Good question. Originally I wrote this patch to debug and verify the > > vmemmap > >

RE: [PATCH] arm64: mm: add support for memmap kernel parameters

2020-11-18 Thread Song Bao Hua (Barry Song)
@vger.kernel.org; > a...@linux-foundation.org; linux-arm-ker...@lists.infradead.org > Subject: Re: [PATCH] arm64: mm: add support for memmap kernel parameters > > On Wed, 18 Nov 2020 at 21:27, Song Bao Hua (Barry Song) > wrote: > > > > > > > > > -Origin

Re: [PATCH] arm64: mm: add support for memmap kernel parameters

2020-11-18 Thread Ard Biesheuvel
; > catalin.mari...@arm.com; linux-arm-ker...@lists.infradead.org; > > linux-kernel@vger.kernel.org; a...@linux-foundation.org; > > anshuman.khand...@arm.com; Linuxarm > > Subject: Re: [PATCH] arm64: mm: add support for memmap kernel parameters > > > > On Wed, Nov 18

RE: [PATCH] arm64: mm: add support for memmap kernel parameters

2020-11-18 Thread Song Bao Hua (Barry Song)
@linux-foundation.org; > anshuman.khand...@arm.com; Linuxarm > Subject: Re: [PATCH] arm64: mm: add support for memmap kernel parameters > > On Wed, Nov 18, 2020 at 07:38:54PM +0200, Mike Rapoport wrote: > > On Wed, Nov 18, 2020 at 07:33:14PM +1300, Barry Song wrote: > >

Re: [PATCH] arm64: mm: add support for memmap kernel parameters

2020-11-18 Thread Will Deacon
On Wed, Nov 18, 2020 at 07:38:54PM +0200, Mike Rapoport wrote: > On Wed, Nov 18, 2020 at 07:33:14PM +1300, Barry Song wrote: > > memmap should be an useful kernel parameter which has been supported by > > x86, mips and xtensa. > > Why is this parameter should be useful for ARM64? > My understandi

Re: [PATCH] arm64: mm: add support for memmap kernel parameters

2020-11-18 Thread Mike Rapoport
Hi Barry, On Wed, Nov 18, 2020 at 07:33:14PM +1300, Barry Song wrote: > memmap should be an useful kernel parameter which has been supported by > x86, mips and xtensa. Why is this parameter should be useful for ARM64? My understanding is that it is required only to work around really broken boot