linux-kernel - [PATCH 0/2] irqchip/gic-v3-its: Mark ITS tables as decrypted

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20240905091738.28544-1-steven.price@arm.com>
Date: Thu,  5 Sep 2024 10:17:36 +0100
From: Steven Price <steven.price@....com>
To: Marc Zyngier <maz@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>
Cc: Steven Price <steven.price@....com>,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	Will Deacon <will@...nel.org>,
	Suzuki K Poulose <suzuki.poulose@....com>
Subject: [PATCH 0/2] irqchip/gic-v3-its: Mark ITS tables as decrypted

These two patches are taken from the larger series to support running
Linux as a realm guest in CCA[1]. They add support to the GIC for
allocating the ITS pages such that they are decrypted so that the host
can access then for emulation purposes.

Note that there are likely to be future changes to make this more
configurable in the future, as it's possible that in a future
configuration a protected component within the realm could take on the
emulation responsibilities ('Planes support')[2]. But this is a good
building block for the future.

Sorry for the delay in posting this as a separate series!

[1] https://lore.kernel.org/r/20240819131924.372366-1-steven.price%40arm.com
[2] https://lore.kernel.org/r/beff9162-e1ba-4f72-91ea-329eaed48dbc%40arm.com

Steven Price (2):
  irqchip/gic-v3-its: Share ITS tables with a non-trusted hypervisor
  irqchip/gic-v3-its: Rely on genpool alignment

 drivers/irqchip/irq-gic-v3-its.c | 142 +++++++++++++++++++++++++------
 1 file changed, 117 insertions(+), 25 deletions(-)

-- 
2.34.1