From: "Edgecombe, Rick P" <rick.p.edgecombe@intel.com>
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Subject: Re: [PATCH v3 21/36] arm64/mm: Implement map_shadow_stack()
Date: Mon, 31 Jul 2023 15:56:50 +0000 [thread overview]
Message-ID: <5461c56cf4896f18bddaa66c3beec7b909fc8fb9.camel@intel.com> (raw)
In-Reply-To: <20230731-arm64-gcs-v3-21-cddf9f980d98@kernel.org>
On Mon, 2023-07-31 at 14:43 +0100, Mark Brown wrote:
> +SYSCALL_DEFINE3(map_shadow_stack, unsigned long, addr, unsigned
> long, size, unsigned int, flags)
> +{
> + unsigned long alloc_size;
> + unsigned long __user *cap_ptr;
> + unsigned long cap_val;
> + int ret;
> +
> + if (!system_supports_gcs())
> + return -EOPNOTSUPP;
> +
> + if (flags)
> + return -EINVAL;
Any thoughts on the questions at the end of this mail?
https://lore.kernel.org/lkml/7a4c97f68347d4188286c543cdccaa12577cdb9e.camel@intel.com/
next prev parent reply other threads:[~2023-07-31 15:57 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-31 13:43 [PATCH v3 00/36] arm64/gcs: Provide support for GCS in userspace Mark Brown
2023-07-31 13:43 ` [PATCH v3 01/36] prctl: arch-agnostic prctl for shadow stack Mark Brown
2023-07-31 13:43 ` [PATCH v3 02/36] arm64: Document boot requirements for Guarded Control Stacks Mark Brown
2023-07-31 13:43 ` [PATCH v3 03/36] arm64/gcs: Document the ABI " Mark Brown
2023-07-31 13:43 ` [PATCH v3 04/36] arm64/sysreg: Add new system registers for GCS Mark Brown
2023-07-31 13:43 ` [PATCH v3 05/36] arm64/sysreg: Add definitions for architected GCS caps Mark Brown
2023-07-31 13:43 ` [PATCH v3 06/36] arm64/gcs: Add manual encodings of GCS instructions Mark Brown
2023-07-31 13:43 ` [PATCH v3 07/36] arm64/gcs: Provide copy_to_user_gcs() Mark Brown
2023-07-31 13:43 ` [PATCH v3 08/36] arm64/cpufeature: Runtime detection of Guarded Control Stack (GCS) Mark Brown
2023-07-31 13:43 ` [PATCH v3 09/36] arm64/mm: Allocate PIE slots for EL0 guarded control stack Mark Brown
2023-07-31 13:43 ` [PATCH v3 10/36] mm: Define VM_SHADOW_STACK for arm64 when we support GCS Mark Brown
2023-08-01 16:53 ` Mike Rapoport
2023-07-31 13:43 ` [PATCH v3 11/36] arm64/mm: Map pages for guarded control stack Mark Brown
2023-08-01 17:02 ` Mike Rapoport
2023-08-01 19:05 ` Mark Brown
2023-07-31 13:43 ` [PATCH v3 12/36] KVM: arm64: Manage GCS registers for guests Mark Brown
2023-07-31 13:43 ` [PATCH v3 13/36] arm64/gcs: Allow GCS usage at EL0 and EL1 Mark Brown
2023-07-31 13:43 ` [PATCH v3 14/36] arm64/idreg: Add overrride for GCS Mark Brown
2023-07-31 13:43 ` [PATCH v3 15/36] arm64/hwcap: Add hwcap " Mark Brown
2023-07-31 13:43 ` [PATCH v3 16/36] arm64/traps: Handle GCS exceptions Mark Brown
2023-07-31 13:43 ` [PATCH v3 17/36] arm64/mm: Handle GCS data aborts Mark Brown
2023-07-31 13:43 ` [PATCH v3 18/36] arm64/gcs: Context switch GCS state for EL0 Mark Brown
2023-07-31 13:43 ` [PATCH v3 19/36] arm64/gcs: Allocate a new GCS for threads with GCS enabled Mark Brown
2023-07-31 13:43 ` [PATCH v3 20/36] arm64/gcs: Implement shadow stack prctl() interface Mark Brown
2023-07-31 13:43 ` [PATCH v3 21/36] arm64/mm: Implement map_shadow_stack() Mark Brown
2023-07-31 15:56 ` Edgecombe, Rick P [this message]
2023-07-31 17:06 ` Mark Brown
2023-07-31 23:19 ` Edgecombe, Rick P
2023-08-01 14:01 ` Mark Brown
2023-08-01 17:07 ` Edgecombe, Rick P
2023-08-01 17:28 ` Mike Rapoport
2023-08-01 18:03 ` Mark Brown
2023-08-01 17:57 ` Mark Brown
2023-08-01 20:57 ` Edgecombe, Rick P
2023-08-02 16:27 ` Mark Brown
2023-08-04 13:38 ` Mark Brown
2023-08-04 16:43 ` Edgecombe, Rick P
2023-08-04 17:10 ` Mark Brown
2023-08-07 10:20 ` Szabolcs Nagy
2023-08-07 13:00 ` Mark Brown
2023-08-08 8:21 ` Szabolcs Nagy
2023-08-08 20:42 ` Mark Brown
2023-07-31 13:43 ` [PATCH v3 22/36] arm64/signal: Set up and restore the GCS context for signal handlers Mark Brown
2023-07-31 13:43 ` [PATCH v3 23/36] arm64/signal: Expose GCS state in signal frames Mark Brown
2023-07-31 13:43 ` [PATCH v3 24/36] arm64/ptrace: Expose GCS via ptrace and core files Mark Brown
2023-07-31 13:43 ` [PATCH v3 25/36] arm64: Add Kconfig for Guarded Control Stack (GCS) Mark Brown
2023-07-31 13:43 ` [PATCH v3 26/36] kselftest/arm64: Verify the GCS hwcap Mark Brown
2023-07-31 13:43 ` [PATCH v3 27/36] kselftest/arm64: Add GCS as a detected feature in the signal tests Mark Brown
2023-07-31 13:43 ` [PATCH v3 28/36] kselftest/arm64: Add framework support for GCS to signal handling tests Mark Brown
2023-07-31 13:43 ` [PATCH v3 29/36] kselftest/arm64: Allow signals tests to specify an expected si_code Mark Brown
2023-07-31 13:43 ` [PATCH v3 30/36] kselftest/arm64: Always run signals tests with GCS enabled Mark Brown
2023-07-31 13:43 ` [PATCH v3 31/36] kselftest/arm64: Add very basic GCS test program Mark Brown
2023-07-31 13:43 ` [PATCH v3 32/36] kselftest/arm64: Add a GCS test program built with the system libc Mark Brown
2023-07-31 13:43 ` [PATCH v3 33/36] kselftest/arm64: Add test coverage for GCS mode locking Mark Brown
2023-07-31 13:43 ` [PATCH v3 34/36] selftests/arm64: Add GCS signal tests Mark Brown
2023-07-31 13:43 ` [PATCH v3 35/36] kselftest/arm64: Add a GCS stress test Mark Brown
2023-07-31 13:43 ` [PATCH v3 36/36] kselftest/arm64: Enable GCS for the FP stress tests Mark Brown
2023-08-01 14:13 ` [PATCH v3 00/36] arm64/gcs: Provide support for GCS in userspace Will Deacon
2023-08-01 15:09 ` Mark Brown
2023-08-08 10:27 ` Szabolcs Nagy
2023-08-08 13:38 ` Will Deacon
2023-08-08 20:25 ` Mark Brown
2023-08-10 9:40 ` Will Deacon
2023-08-10 16:05 ` Mark Brown
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