From: Deepak Gupta <debug@rivosinc.com>
To: paul.walmsley@sifive.com, rick.p.edgecombe@intel.com,
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Subject: Re: [PATCH v2 11/27] riscv mmu: teach pte_mkwrite to manufacture shadow stack PTEs
Date: Thu, 28 Mar 2024 22:15:40 -0700 [thread overview]
Message-ID: <CAKC1njTheY9+gRFgiWaA8fG5hiOFXqESz7eGDbhHhDZC7Kignw@mail.gmail.com> (raw)
In-Reply-To: <20240329044459.3990638-12-debug@rivosinc.com>
On Thu, Mar 28, 2024 at 9:46 PM Deepak Gupta <debug@rivosinc.com> wrote:
>
> pte_mkwrite creates PTEs with WRITE encodings for underlying arch. Underlying
> arch can have two types of writeable mappings. One that can be written using
> regular store instructions. Another one that can only be written using specialized
> store instructions (like shadow stack stores). pte_mkwrite can select write PTE
> encoding based on VMA range.
>
> On riscv, presence of only VM_WRITE in vma->vm_flags means it's a shadow stack.
>
> Signed-off-by: Deepak Gupta <debug@rivosinc.com>
>
> rebase with a30f0ca0fa31cdb2ac3d24b7b5be9e3ae75f4175
>
hmm.. Note to self:
Missed removing this lingering commit message. Will remove it in the
next version.
next prev parent reply other threads:[~2024-03-29 5:15 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-29 4:44 [PATCH v2 00/27] riscv control-flow integrity for usermode Deepak Gupta
2024-03-29 4:44 ` [PATCH v2 01/27] riscv: envcfg save and restore on task switching Deepak Gupta
2024-03-29 4:44 ` [PATCH v2 02/27] riscv: define default value for envcfg Deepak Gupta
2024-03-29 4:44 ` [PATCH v2 03/27] riscv/Kconfig: enable HAVE_EXIT_THREAD for riscv Deepak Gupta
2024-03-29 4:44 ` [PATCH v2 04/27] riscv: zicfiss/zicfilp enumeration Deepak Gupta
2024-03-29 5:08 ` Stefan O'Rear
2024-03-29 5:13 ` Deepak Gupta
2024-03-29 7:24 ` Conor Dooley
2024-03-29 4:44 ` [PATCH v2 05/27] riscv: zicfiss/zicfilp extension csr and bit definitions Deepak Gupta
2024-03-29 4:44 ` [PATCH v2 06/27] riscv: usercfi state for task and save/restore of CSR_SSP on trap entry/exit Deepak Gupta
2024-03-29 4:44 ` [PATCH v2 07/27] mm: Define VM_SHADOW_STACK for RISC-V Deepak Gupta
2024-03-29 4:44 ` [PATCH v2 08/27] mm: abstract shadow stack vma behind `arch_is_shadow_stack` Deepak Gupta
2024-03-29 4:44 ` [PATCH v2 09/27] riscv/mm : ensure PROT_WRITE leads to VM_READ | VM_WRITE Deepak Gupta
2024-03-29 4:44 ` [PATCH v2 10/27] riscv mm: manufacture shadow stack pte Deepak Gupta
2024-03-29 4:44 ` [PATCH v2 11/27] riscv mmu: teach pte_mkwrite to manufacture shadow stack PTEs Deepak Gupta
2024-03-29 5:15 ` Deepak Gupta [this message]
2024-03-29 4:44 ` [PATCH v2 12/27] riscv mmu: write protect and shadow stack Deepak Gupta
2024-03-29 4:44 ` [PATCH v2 13/27] riscv/mm: Implement map_shadow_stack() syscall Deepak Gupta
2024-03-29 4:44 ` [PATCH v2 14/27] riscv/shstk: If needed allocate a new shadow stack on clone Deepak Gupta
2024-03-29 4:44 ` [PATCH v2 15/27] prctl: arch-agnostic prctl for shadow stack Deepak Gupta
2024-03-29 4:44 ` [PATCH v2 16/27] prctl: arch-agnostic prtcl for indirect branch tracking Deepak Gupta
2024-03-29 4:44 ` [PATCH v2 17/27] riscv: Implements arch agnostic shadow stack prctls Deepak Gupta
2024-03-29 4:44 ` [PATCH v2 18/27] riscv: Implements arch argnostic indirect branch tracking prctls Deepak Gupta
2024-03-29 4:44 ` [PATCH v2 19/27] riscv/kernel: update __show_regs to print shadow stack register Deepak Gupta
2024-03-29 4:44 ` [PATCH v2 20/27] riscv/traps: Introduce software check exception Deepak Gupta
2024-03-29 4:44 ` [PATCH v2 21/27] riscv sigcontext: adding cfi state field in sigcontext Deepak Gupta
2024-03-29 4:44 ` [PATCH v2 22/27] riscv signal: Save and restore of shadow stack for signal Deepak Gupta
2024-03-29 4:44 ` [PATCH v2 23/27] riscv/ptrace: riscv cfi status and state via ptrace and in core files Deepak Gupta
2024-03-29 4:44 ` [PATCH v2 24/27] riscv: create a config for shadow stack and landing pad instr support Deepak Gupta
2024-03-29 4:44 ` [PATCH v2 25/27] riscv: Documentation for landing pad / indirect branch tracking Deepak Gupta
2024-03-29 4:44 ` [PATCH v2 26/27] riscv: Documentation for shadow stack on riscv Deepak Gupta
2024-03-29 4:44 ` [PATCH v2 27/27] kselftest/riscv: kselftest for user mode cfi Deepak Gupta
2024-03-29 19:50 ` Muhammad Usama Anjum
2024-03-29 20:02 ` Deepak Gupta
2024-04-01 9:46 ` Muhammad Usama Anjum
2024-04-01 17:34 ` Deepak Gupta
2024-04-01 17:55 ` Deepak Gupta
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