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From: Christophe Leroy <christophe.leroy@c-s.fr>
To: Segher Boessenkool <segher@kernel.crashing.org>,
	Alastair D'Silva <alastair@au1.ibm.com>
Cc: David Hildenbrand <david@redhat.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	linux-kernel@vger.kernel.org, Nicholas Piggin <npiggin@gmail.com>,
	Paul Mackerras <paulus@samba.org>,
	stable@vger.kernel.org, alastair@d-silva.org,
	Qian Cai <cai@lca.pw>, Thomas Gleixner <tglx@linutronix.de>,
	linuxppc-dev@lists.ozlabs.org,
	Andrew Morton <akpm@linux-foundation.org>,
	Allison Randal <allison@lohutok.net>
Subject: Re: [PATCH v5 1/6] powerpc: Allow flush_icache_range to work across ranges >4GB
Date: Tue, 5 Nov 2019 07:04:04 +0100
Message-ID: <74435ba6-51dc-1dff-b55b-cdcf85e2e302@c-s.fr> (raw)
In-Reply-To: <20191104194357.GE16031@gate.crashing.org>



Le 04/11/2019 à 20:43, Segher Boessenkool a écrit :
> On Mon, Nov 04, 2019 at 01:32:53PM +1100, Alastair D'Silva wrote:
>> When calling flush_icache_range with a size >4GB, we were masking
>> off the upper 32 bits, so we would incorrectly flush a range smaller
>> than intended.
>>
>> This patch replaces the 32 bit shifts with 64 bit ones, so that
>> the full size is accounted for.
> 
> Please send this separately, to be committed right now?  It is a bug fix,
> independent of the rest of the series.
> 

Patch 4/6 needs it, as it drops the function.

Or do you mean that the series should drop the assembly at once, and 
this patch should only go into stable ?

But I guess mpe can take this patch alone if he wants to ?

By the way, Patch 2/6 is also a bugfix.

Christophe

  reply index

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-04  2:32 [PATCH v5 0/6] powerpc: convert cache asm to C Alastair D'Silva
2019-11-04  2:32 ` [PATCH v5 1/6] powerpc: Allow flush_icache_range to work across ranges >4GB Alastair D'Silva
2019-11-04 19:43   ` Segher Boessenkool
2019-11-05  6:04     ` Christophe Leroy [this message]
2019-11-06 17:49       ` Segher Boessenkool
2019-11-14  9:08   ` Michael Ellerman
2019-11-04  2:32 ` [PATCH v5 2/6] powerpc: Allow 64bit VDSO __kernel_sync_dicache " Alastair D'Silva
2019-11-04  2:32 ` [PATCH v5 3/6] powerpc: define helpers to get L1 icache sizes Alastair D'Silva
2019-11-04  2:32 ` [PATCH v5 4/6] powerpc: Convert flush_icache_range & friends to C Alastair D'Silva
2019-11-04  4:54   ` kbuild test robot
2019-11-12 10:49   ` Michael Ellerman
2019-11-04  2:32 ` [PATCH v5 5/6] powerpc: Chunk calls to flush_dcache_range in arch_*_memory Alastair D'Silva
2019-11-07 11:54   ` Michael Ellerman
2019-11-04  2:32 ` [PATCH v5 6/6] powerpc: Don't flush caches when adding memory Alastair D'Silva

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