From: Andrew Lunn <andrew@lunn.ch>
To: Vivek Kumar <quic_vivekuma@quicinc.com>
Cc: corbet@lwn.net, catalin.marinas@arm.com, will@kernel.org,
tglx@linutronix.de, maz@kernel.org, axboe@kernel.dk,
rafael@kernel.org, akpm@linux-foundation.org,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-block@vger.kernel.org, linux-pm@vger.kernel.org,
linux-mm@kvack.org, len.brown@intel.com, pavel@ucw.cz,
paulmck@kernel.org, bp@suse.de, keescook@chromium.org,
songmuchun@bytedance.com, rdunlap@infradead.org,
damien.lemoal@opensource.wdc.com, pasha.tatashin@soleen.com,
tabba@google.com, ardb@kernel.org, tsoni@quicinc.com,
quic_psodagud@quicinc.com, quic_svaddagi@quicinc.com,
Prasanna Kumar <quic_kprasan@quicinc.com>
Subject: Re: [RFC 4/6] mm: swap: Add randomization check for swapon/off calls
Date: Wed, 18 May 2022 14:27:05 +0200 [thread overview]
Message-ID: <YoTmGREvHTpTeeUH@lunn.ch> (raw)
In-Reply-To: <1652860121-24092-5-git-send-email-quic_vivekuma@quicinc.com>
On Wed, May 18, 2022 at 01:18:39PM +0530, Vivek Kumar wrote:
> Add addtional check on swapon/swapoff sycalls to disable
> randomization of swap offsets if GENHD_FL_NO_RANDOMIZE
> flag is passed.
Is there already a flag in the image header which tells you if the
image is randomozied or not? I assume the bootloader needs to know,
doing a linear read of a randomized image is not going to end well.
Andrew
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next prev parent reply other threads:[~2022-05-18 12:28 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-18 7:48 [RFC 0/6] Bootloader based hibernation Vivek Kumar
2022-05-18 7:48 ` [RFC 1/6] arm64: hibernate: Introduce new entry point to kernel Vivek Kumar
2022-05-19 15:27 ` Marc Zyngier
2022-05-18 7:48 ` [RFC 2/6] PM: Hibernate: Add option to disable disk offset randomization Vivek Kumar
2022-05-18 12:19 ` Andrew Lunn
2022-05-18 13:00 ` Christoph Hellwig
2022-05-23 20:49 ` Randy Dunlap
2022-05-18 7:48 ` [RFC 3/6] block: gendisk: Add a new genhd capability flag Vivek Kumar
2022-05-18 8:08 ` Christoph Hellwig
2022-05-18 7:48 ` [RFC 4/6] mm: swap: Add randomization check for swapon/off calls Vivek Kumar
2022-05-18 12:27 ` Andrew Lunn [this message]
2022-05-18 7:48 ` [RFC 5/6] Hibernate: Add check for pte_valid in saveable page Vivek Kumar
2022-05-18 13:09 ` Christoph Hellwig
2022-05-18 7:48 ` [RFC 6/6] irqchip/gic-v3: Re-init GIC hardware upon hibernation restore Vivek Kumar
2022-05-19 7:59 ` Marc Zyngier
2022-05-18 16:55 ` [RFC 0/6] Bootloader based hibernation Pasha Tatashin
2022-05-20 16:43 ` Mark Rutland
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