From: catalin.marinas@arm.com (Catalin Marinas)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v4 0/8] arm64: Privileged Access Never using TTBR0_EL1 switching
Date: Fri, 28 Oct 2016 18:27:08 +0100 [thread overview]
Message-ID: <1477675636-3957-1-git-send-email-catalin.marinas@arm.com> (raw)
This is the fourth version of the arm64 PAN emulation using TTBR0_EL1
switching. The series does not include the empty_zero_page patch from
Ard B. as I didn't have an up to date patch, nor figured out where the
discussion was left.
The patches are available on this branch:
git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux ttbr0-pan
Changes since v3:
- Xen hyp call now only enables TTBR0_EL1 if needed without clearing PAN
- Fix for user space cache maintenance trapping/emulation
- Simplified asm macros based on Mark R's "alternative_else_nop_endif"
- Separate patch for fixing the synchronous external abort description
- #includes clean-up
Catalin Marinas (8):
arm64: Update the synchronous external abort fault description
arm64: Factor out PAN enabling/disabling into separate uaccess_*
macros
arm64: Factor out TTBR0_EL1 post-update workaround into a specific asm
macro
arm64: Introduce uaccess_{disable,enable} functionality based on
TTBR0_EL1
arm64: Disable TTBR0_EL1 during normal kernel execution
arm64: Handle faults caused by inadvertent user access with PAN
enabled
arm64: xen: Enable user access before a privcmd hvc call
arm64: Enable CONFIG_ARM64_SW_TTBR0_PAN
arch/arm64/Kconfig | 8 ++
arch/arm64/include/asm/assembler.h | 29 ++++++
arch/arm64/include/asm/cpufeature.h | 6 ++
arch/arm64/include/asm/efi.h | 26 ++++-
arch/arm64/include/asm/futex.h | 17 ++--
arch/arm64/include/asm/kernel-pgtable.h | 7 ++
arch/arm64/include/asm/mmu_context.h | 53 +++++++---
arch/arm64/include/asm/thread_info.h | 3 +
arch/arm64/include/asm/uaccess.h | 175 ++++++++++++++++++++++++++++++--
arch/arm64/kernel/armv8_deprecated.c | 11 +-
arch/arm64/kernel/asm-offsets.c | 3 +
arch/arm64/kernel/cpufeature.c | 1 +
arch/arm64/kernel/entry.S | 67 +++++++++++-
arch/arm64/kernel/head.S | 6 +-
arch/arm64/kernel/setup.c | 9 ++
arch/arm64/kernel/traps.c | 9 +-
arch/arm64/kernel/vmlinux.lds.S | 5 +
arch/arm64/lib/clear_user.S | 11 +-
arch/arm64/lib/copy_from_user.S | 11 +-
arch/arm64/lib/copy_in_user.S | 11 +-
arch/arm64/lib/copy_to_user.S | 11 +-
arch/arm64/mm/cache.S | 6 +-
arch/arm64/mm/context.c | 7 +-
arch/arm64/mm/fault.c | 22 ++--
arch/arm64/mm/proc.S | 6 +-
arch/arm64/xen/hypercall.S | 15 +++
26 files changed, 437 insertions(+), 98 deletions(-)
next reply other threads:[~2016-10-28 17:27 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-28 17:27 Catalin Marinas [this message]
2016-10-28 17:27 ` [PATCH v4 1/8] arm64: Update the synchronous external abort fault description Catalin Marinas
2016-10-28 17:27 ` [PATCH v4 2/8] arm64: Factor out PAN enabling/disabling into separate uaccess_* macros Catalin Marinas
2016-10-28 17:27 ` [PATCH v4 3/8] arm64: Factor out TTBR0_EL1 post-update workaround into a specific asm macro Catalin Marinas
2016-10-28 17:27 ` [PATCH v4 4/8] arm64: Introduce uaccess_{disable, enable} functionality based on TTBR0_EL1 Catalin Marinas
2016-10-28 17:27 ` [PATCH v4 5/8] arm64: Disable TTBR0_EL1 during normal kernel execution Catalin Marinas
2016-10-28 17:27 ` [PATCH v4 6/8] arm64: Handle faults caused by inadvertent user access with PAN enabled Catalin Marinas
2016-10-28 17:27 ` [PATCH v4 7/8] arm64: xen: Enable user access before a privcmd hvc call Catalin Marinas
2016-10-28 17:27 ` [PATCH v4 8/8] arm64: Enable CONFIG_ARM64_SW_TTBR0_PAN Catalin Marinas
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1477675636-3957-1-git-send-email-catalin.marinas@arm.com \
--to=catalin.marinas@arm.com \
--cc=linux-arm-kernel@lists.infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).