From: Kees Cook <keescook@chromium.org> To: samitolvanen@google.com Cc: Will Deacon <will@kernel.org>, Catalin Marinas <catalin.marinas@arm.com>, Steven Rostedt <rostedt@goodmis.org>, Masami Hiramatsu <mhiramat@kernel.org>, Ard Biesheuvel <ard.biesheuvel@linaro.org>, Dave Martin <Dave.Martin@arm.com>, Laura Abbott <labbott@redhat.com>, Mark Rutland <mark.rutland@arm.com>, Nick Desaulniers <ndesaulniers@google.com>, Jann Horn <jannh@google.com>, Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>, Masahiro Yamada <yamada.masahiro@socionext.com>, clang-built-linux@googlegroups.com, kernel-hardening@lists.openwall.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v3 03/17] arm64: kvm: stop treating register x18 as caller save Date: Thu, 31 Oct 2019 20:48:15 -0700 Message-ID: <201910312048.3B34452@keescook> (raw) In-Reply-To: <20191031164637.48901-4-samitolvanen@google.com> On Thu, Oct 31, 2019 at 09:46:23AM -0700, samitolvanen@google.com wrote: > In preparation of reserving x18, stop treating it as caller save in > the KVM guest entry/exit code. Currently, the code assumes there is > no need to preserve it for the host, given that it would have been > assumed clobbered anyway by the function call to __guest_enter(). > Instead, preserve its value and restore it upon return. > > Link: https://patchwork.kernel.org/patch/9836891/ > Co-developed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> > [ updated commit message, switched from x18 to x29 for the guest context ] > Signed-off-by: Sami Tolvanen <samitolvanen@google.com> Reviewed-by: Kees Cook <keescook@chromium.org> -Kees > --- > arch/arm64/kvm/hyp/entry.S | 41 +++++++++++++++++++------------------- > 1 file changed, 20 insertions(+), 21 deletions(-) > > diff --git a/arch/arm64/kvm/hyp/entry.S b/arch/arm64/kvm/hyp/entry.S > index e5cc8d66bf53..c3c2d842c609 100644 > --- a/arch/arm64/kvm/hyp/entry.S > +++ b/arch/arm64/kvm/hyp/entry.S > @@ -23,6 +23,7 @@ > .pushsection .hyp.text, "ax" > > .macro save_callee_saved_regs ctxt > + str x18, [\ctxt, #CPU_XREG_OFFSET(18)] > stp x19, x20, [\ctxt, #CPU_XREG_OFFSET(19)] > stp x21, x22, [\ctxt, #CPU_XREG_OFFSET(21)] > stp x23, x24, [\ctxt, #CPU_XREG_OFFSET(23)] > @@ -32,6 +33,8 @@ > .endm > > .macro restore_callee_saved_regs ctxt > + // We assume \ctxt is not x18-x28 > + ldr x18, [\ctxt, #CPU_XREG_OFFSET(18)] > ldp x19, x20, [\ctxt, #CPU_XREG_OFFSET(19)] > ldp x21, x22, [\ctxt, #CPU_XREG_OFFSET(21)] > ldp x23, x24, [\ctxt, #CPU_XREG_OFFSET(23)] > @@ -48,7 +51,7 @@ ENTRY(__guest_enter) > // x0: vcpu > // x1: host context > // x2-x17: clobbered by macros > - // x18: guest context > + // x29: guest context > > // Store the host regs > save_callee_saved_regs x1 > @@ -67,31 +70,28 @@ alternative_else_nop_endif > ret > > 1: > - add x18, x0, #VCPU_CONTEXT > + add x29, x0, #VCPU_CONTEXT > > // Macro ptrauth_switch_to_guest format: > // ptrauth_switch_to_guest(guest cxt, tmp1, tmp2, tmp3) > // The below macro to restore guest keys is not implemented in C code > // as it may cause Pointer Authentication key signing mismatch errors > // when this feature is enabled for kernel code. > - ptrauth_switch_to_guest x18, x0, x1, x2 > + ptrauth_switch_to_guest x29, x0, x1, x2 > > // Restore guest regs x0-x17 > - ldp x0, x1, [x18, #CPU_XREG_OFFSET(0)] > - ldp x2, x3, [x18, #CPU_XREG_OFFSET(2)] > - ldp x4, x5, [x18, #CPU_XREG_OFFSET(4)] > - ldp x6, x7, [x18, #CPU_XREG_OFFSET(6)] > - ldp x8, x9, [x18, #CPU_XREG_OFFSET(8)] > - ldp x10, x11, [x18, #CPU_XREG_OFFSET(10)] > - ldp x12, x13, [x18, #CPU_XREG_OFFSET(12)] > - ldp x14, x15, [x18, #CPU_XREG_OFFSET(14)] > - ldp x16, x17, [x18, #CPU_XREG_OFFSET(16)] > - > - // Restore guest regs x19-x29, lr > - restore_callee_saved_regs x18 > - > - // Restore guest reg x18 > - ldr x18, [x18, #CPU_XREG_OFFSET(18)] > + ldp x0, x1, [x29, #CPU_XREG_OFFSET(0)] > + ldp x2, x3, [x29, #CPU_XREG_OFFSET(2)] > + ldp x4, x5, [x29, #CPU_XREG_OFFSET(4)] > + ldp x6, x7, [x29, #CPU_XREG_OFFSET(6)] > + ldp x8, x9, [x29, #CPU_XREG_OFFSET(8)] > + ldp x10, x11, [x29, #CPU_XREG_OFFSET(10)] > + ldp x12, x13, [x29, #CPU_XREG_OFFSET(12)] > + ldp x14, x15, [x29, #CPU_XREG_OFFSET(14)] > + ldp x16, x17, [x29, #CPU_XREG_OFFSET(16)] > + > + // Restore guest regs x18-x29, lr > + restore_callee_saved_regs x29 > > // Do not touch any register after this! > eret > @@ -114,7 +114,7 @@ ENTRY(__guest_exit) > // Retrieve the guest regs x0-x1 from the stack > ldp x2, x3, [sp], #16 // x0, x1 > > - // Store the guest regs x0-x1 and x4-x18 > + // Store the guest regs x0-x1 and x4-x17 > stp x2, x3, [x1, #CPU_XREG_OFFSET(0)] > stp x4, x5, [x1, #CPU_XREG_OFFSET(4)] > stp x6, x7, [x1, #CPU_XREG_OFFSET(6)] > @@ -123,9 +123,8 @@ ENTRY(__guest_exit) > stp x12, x13, [x1, #CPU_XREG_OFFSET(12)] > stp x14, x15, [x1, #CPU_XREG_OFFSET(14)] > stp x16, x17, [x1, #CPU_XREG_OFFSET(16)] > - str x18, [x1, #CPU_XREG_OFFSET(18)] > > - // Store the guest regs x19-x29, lr > + // Store the guest regs x18-x29, lr > save_callee_saved_regs x1 > > get_host_ctxt x2, x3 > -- > 2.24.0.rc0.303.g954a862665-goog > -- Kees Cook
next prev parent reply index Thread overview: 252+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-10-18 16:10 [PATCH 00/18] add support for Clang's Shadow Call Stack Sami Tolvanen 2019-10-18 16:10 ` [PATCH 01/18] arm64: mm: don't use x18 in idmap_kpti_install_ng_mappings Sami Tolvanen 2019-10-18 16:43 ` Nick Desaulniers 2019-10-18 16:10 ` [PATCH 02/18] arm64/lib: copy_page: avoid x18 register in assembler code Sami Tolvanen 2019-10-18 16:10 ` [PATCH 03/18] arm64: kvm: stop treating register x18 as caller save Sami Tolvanen 2019-10-21 6:19 ` Ard Biesheuvel 2019-10-22 17:22 ` Marc Zyngier 2019-10-22 21:45 ` Sami Tolvanen 2019-10-18 16:10 ` [PATCH 04/18] arm64: kernel: avoid x18 as an arbitrary temp register Sami Tolvanen 2019-10-18 16:10 ` [PATCH 05/18] arm64: kbuild: reserve reg x18 from general allocation by the compiler Sami Tolvanen 2019-10-18 17:32 ` Nick Desaulniers 2019-10-18 19:00 ` Sami Tolvanen 2019-10-21 6:12 ` Ard Biesheuvel 2019-10-21 20:43 ` Sami Tolvanen 2019-10-18 16:10 ` [PATCH 06/18] add support for Clang's Shadow Call Stack (SCS) Sami Tolvanen 2019-10-18 16:58 ` Joe Perches 2019-10-18 17:08 ` Nick Desaulniers 2019-10-18 17:11 ` Sami Tolvanen 2019-10-18 18:32 ` Miguel Ojeda 2019-10-18 20:33 ` Nick Desaulniers 2019-10-19 0:21 ` Miguel Ojeda 2019-10-18 17:42 ` Jann Horn 2019-10-18 17:56 ` Sami Tolvanen 2019-10-22 16:28 ` Mark Rutland 2019-10-22 16:30 ` Kees Cook 2019-10-22 16:49 ` Mark Rutland 2019-10-22 19:26 ` Sami Tolvanen 2019-10-24 13:28 ` Mark Rutland 2019-10-24 14:38 ` Masahiro Yamada 2019-10-23 16:59 ` Sami Tolvanen 2019-10-24 1:47 ` Masahiro Yamada 2019-10-24 12:04 ` Steven Rostedt 2019-10-24 22:17 ` Sami Tolvanen 2019-10-18 16:10 ` [PATCH 07/18] scs: add accounting Sami Tolvanen 2019-10-18 16:10 ` [PATCH 08/18] scs: add support for stack usage debugging Sami Tolvanen 2019-10-18 16:10 ` [PATCH 09/18] trace: disable function graph tracing with SCS Sami Tolvanen 2019-10-18 17:01 ` Steven Rostedt 2019-10-18 17:08 ` Sami Tolvanen 2019-10-21 6:15 ` Ard Biesheuvel 2019-10-18 16:10 ` [PATCH 10/18] kprobes: fix compilation without CONFIG_KRETPROBES Sami Tolvanen 2019-10-18 17:02 ` Steven Rostedt 2019-10-21 9:13 ` Masami Hiramatsu 2019-10-18 16:10 ` [PATCH 11/18] kprobes: disable kretprobes with SCS Sami Tolvanen 2019-10-18 17:04 ` Steven Rostedt 2019-10-21 9:15 ` Masami Hiramatsu 2019-10-18 16:10 ` [PATCH 12/18] arm64: reserve x18 only with Shadow Call Stack Sami Tolvanen 2019-10-18 21:23 ` Nick Desaulniers 2019-10-22 16:00 ` Mark Rutland 2019-10-22 16:27 ` Kees Cook 2019-10-18 16:10 ` [PATCH 13/18] arm64: preserve x18 when CPU is suspended Sami Tolvanen 2019-10-18 16:49 ` Nick Desaulniers 2019-10-18 17:05 ` Sami Tolvanen 2019-10-21 16:56 ` Mark Rutland 2019-10-21 22:43 ` Sami Tolvanen 2019-10-22 15:47 ` Mark Rutland 2019-10-18 16:10 ` [PATCH 14/18] arm64: efi: restore x18 if it was corrupted Sami Tolvanen 2019-10-21 6:20 ` Ard Biesheuvel 2019-10-21 22:39 ` Sami Tolvanen 2019-10-22 5:54 ` Ard Biesheuvel 2019-10-18 16:10 ` [PATCH 15/18] arm64: vdso: disable Shadow Call Stack Sami Tolvanen 2019-10-18 16:10 ` [PATCH 16/18] arm64: kprobes: fix kprobes without CONFIG_KRETPROBES Sami Tolvanen 2019-10-21 6:21 ` Ard Biesheuvel 2019-10-21 16:06 ` Kees Cook 2019-10-18 16:10 ` [PATCH 17/18] arm64: disable SCS for hypervisor code Sami Tolvanen 2019-10-18 16:10 ` [PATCH 18/18] arm64: implement Shadow Call Stack Sami Tolvanen 2019-10-18 17:12 ` Jann Horn 2019-10-18 17:18 ` Sami Tolvanen 2019-10-18 17:23 ` Mark Rutland 2019-10-18 17:35 ` Sami Tolvanen 2019-10-21 16:49 ` Mark Rutland 2019-10-21 9:28 ` [PATCH 00/18] add support for Clang's " Masami Hiramatsu 2019-10-24 22:51 ` [PATCH v2 00/17] " samitolvanen 2019-10-24 22:51 ` [PATCH v2 01/17] arm64: mm: don't use x18 in idmap_kpti_install_ng_mappings samitolvanen 2019-10-25 9:24 ` Mark Rutland 2019-10-24 22:51 ` [PATCH v2 02/17] arm64/lib: copy_page: avoid x18 register in assembler code samitolvanen 2019-10-25 9:41 ` Mark Rutland 2019-10-25 21:40 ` Sami Tolvanen 2019-10-24 22:51 ` [PATCH v2 03/17] arm64: kvm: stop treating register x18 as caller save samitolvanen 2019-10-24 22:51 ` [PATCH v2 04/17] arm64: kernel: avoid x18 as an arbitrary temp register samitolvanen 2019-10-25 10:02 ` Mark Rutland 2019-10-24 22:51 ` [PATCH v2 05/17] add support for Clang's Shadow Call Stack (SCS) samitolvanen 2019-10-25 10:56 ` Mark Rutland 2019-10-25 20:49 ` Sami Tolvanen 2019-10-28 16:35 ` Mark Rutland 2019-10-28 19:57 ` Kees Cook 2019-10-29 18:06 ` Sami Tolvanen 2019-10-25 16:22 ` Nick Desaulniers 2019-10-25 20:51 ` Sami Tolvanen 2019-10-26 15:57 ` Joe Perches 2019-10-28 15:19 ` Sami Tolvanen 2019-10-28 15:31 ` Miguel Ojeda 2019-10-28 16:15 ` Sami Tolvanen 2019-10-24 22:51 ` [PATCH v2 06/17] scs: add accounting samitolvanen 2019-10-24 22:51 ` [PATCH v2 07/17] scs: add support for stack usage debugging samitolvanen 2019-10-24 22:51 ` [PATCH v2 08/17] kprobes: fix compilation without CONFIG_KRETPROBES samitolvanen 2019-10-24 22:51 ` [PATCH v2 09/17] arm64: disable function graph tracing with SCS samitolvanen 2019-10-25 11:03 ` Mark Rutland 2019-10-29 17:45 ` Sami Tolvanen 2019-10-29 20:35 ` Nick Desaulniers 2019-10-24 22:51 ` [PATCH v2 10/17] arm64: disable kretprobes " samitolvanen 2019-10-24 22:51 ` [PATCH v2 11/17] arm64: reserve x18 from general allocation " samitolvanen 2019-10-24 22:51 ` [PATCH v2 12/17] arm64: preserve x18 when CPU is suspended samitolvanen 2019-10-24 22:51 ` [PATCH v2 13/17] arm64: efi: restore x18 if it was corrupted samitolvanen 2019-10-24 22:51 ` [PATCH v2 14/17] arm64: vdso: disable Shadow Call Stack samitolvanen 2019-10-24 22:51 ` [PATCH v2 15/17] arm64: kprobes: fix kprobes without CONFIG_KRETPROBES samitolvanen 2019-10-24 22:51 ` [PATCH v2 16/17] arm64: disable SCS for hypervisor code samitolvanen 2019-10-25 1:20 ` Steven Rostedt 2019-10-25 1:29 ` Masahiro Yamada 2019-10-25 1:42 ` Steven Rostedt 2019-10-25 19:24 ` Sami Tolvanen 2019-10-24 22:51 ` [PATCH v2 17/17] arm64: implement Shadow Call Stack samitolvanen 2019-10-31 16:46 ` [PATCH v3 00/17] add support for Clang's " samitolvanen 2019-10-31 16:46 ` [PATCH v3 01/17] arm64: mm: avoid x18 in idmap_kpti_install_ng_mappings samitolvanen 2019-10-31 16:46 ` [PATCH v3 02/17] arm64/lib: copy_page: avoid x18 register in assembler code samitolvanen 2019-10-31 16:46 ` [PATCH v3 03/17] arm64: kvm: stop treating register x18 as caller save samitolvanen 2019-11-01 3:48 ` Kees Cook [this message] 2019-10-31 16:46 ` [PATCH v3 04/17] arm64: kernel: avoid x18 __cpu_soft_restart samitolvanen 2019-11-01 3:47 ` Kees Cook 2019-10-31 16:46 ` [PATCH v3 05/17] add support for Clang's Shadow Call Stack (SCS) samitolvanen 2019-11-01 3:51 ` Kees Cook 2019-11-01 16:28 ` Sami Tolvanen 2019-10-31 16:46 ` [PATCH v3 06/17] scs: add accounting samitolvanen 2019-11-01 3:52 ` Kees Cook 2019-10-31 16:46 ` [PATCH v3 07/17] scs: add support for stack usage debugging samitolvanen 2019-11-01 3:55 ` Kees Cook 2019-11-01 16:32 ` Sami Tolvanen 2019-11-01 19:02 ` Kees Cook 2019-10-31 16:46 ` [PATCH v3 08/17] kprobes: fix compilation without CONFIG_KRETPROBES samitolvanen 2019-11-01 3:55 ` Kees Cook 2019-10-31 16:46 ` [PATCH v3 09/17] arm64: kprobes: fix kprobes " samitolvanen 2019-11-01 3:56 ` Kees Cook 2019-10-31 16:46 ` [PATCH v3 10/17] arm64: disable kretprobes with SCS samitolvanen 2019-11-01 3:56 ` Kees Cook 2019-10-31 16:46 ` [PATCH v3 11/17] arm64: disable function graph tracing " samitolvanen 2019-11-01 3:58 ` Kees Cook 2019-11-01 20:32 ` Sami Tolvanen 2019-10-31 16:46 ` [PATCH v3 12/17] arm64: reserve x18 from general allocation " samitolvanen 2019-10-31 17:11 ` Nick Desaulniers 2019-11-01 3:59 ` Kees Cook 2019-10-31 16:46 ` [PATCH v3 13/17] arm64: preserve x18 when CPU is suspended samitolvanen 2019-10-31 17:18 ` Nick Desaulniers 2019-10-31 17:27 ` Sami Tolvanen 2019-10-31 17:34 ` Nick Desaulniers 2019-10-31 17:42 ` Sami Tolvanen 2019-11-01 3:59 ` Kees Cook 2019-10-31 16:46 ` [PATCH v3 14/17] arm64: efi: restore x18 if it was corrupted samitolvanen 2019-11-01 4:00 ` Kees Cook 2019-10-31 16:46 ` [PATCH v3 15/17] arm64: vdso: disable Shadow Call Stack samitolvanen 2019-10-31 17:28 ` Nick Desaulniers 2019-11-01 4:01 ` Kees Cook 2019-10-31 16:46 ` [PATCH v3 16/17] arm64: disable SCS for hypervisor code samitolvanen 2019-11-01 3:46 ` Kees Cook 2019-11-01 4:02 ` Kees Cook 2019-10-31 16:46 ` [PATCH v3 17/17] arm64: implement Shadow Call Stack samitolvanen 2019-11-01 3:45 ` Kees Cook 2019-11-01 15:44 ` Sami Tolvanen 2019-11-01 22:11 ` [PATCH v4 00/17] add support for Clang's " Sami Tolvanen 2019-11-01 22:11 ` [PATCH v4 01/17] arm64: mm: avoid x18 in idmap_kpti_install_ng_mappings Sami Tolvanen 2019-11-01 22:11 ` [PATCH v4 02/17] arm64/lib: copy_page: avoid x18 register in assembler code Sami Tolvanen 2019-11-01 22:11 ` [PATCH v4 03/17] arm64: kvm: stop treating register x18 as caller save Sami Tolvanen 2019-11-04 11:04 ` Marc Zyngier 2019-11-04 13:30 ` Marc Zyngier 2019-11-04 11:51 ` Mark Rutland 2019-11-04 21:44 ` Sami Tolvanen 2019-11-01 22:11 ` [PATCH v4 04/17] arm64: kernel: avoid x18 __cpu_soft_restart Sami Tolvanen 2019-11-04 11:39 ` Mark Rutland 2019-11-04 16:44 ` Sami Tolvanen 2019-11-01 22:11 ` [PATCH v4 05/17] add support for Clang's Shadow Call Stack (SCS) Sami Tolvanen 2019-11-01 22:36 ` Miguel Ojeda 2019-11-04 12:31 ` Mark Rutland 2019-11-04 18:25 ` Sami Tolvanen 2019-11-01 22:11 ` [PATCH v4 06/17] scs: add accounting Sami Tolvanen 2019-11-04 13:13 ` Marc Zyngier 2019-11-04 16:42 ` Sami Tolvanen 2019-11-04 16:59 ` Marc Zyngier 2019-11-01 22:11 ` [PATCH v4 07/17] scs: add support for stack usage debugging Sami Tolvanen 2019-11-02 17:31 ` Kees Cook 2019-11-04 12:40 ` Mark Rutland 2019-11-04 21:35 ` Sami Tolvanen 2019-11-05 9:17 ` Mark Rutland 2019-11-01 22:11 ` [PATCH v4 08/17] kprobes: fix compilation without CONFIG_KRETPROBES Sami Tolvanen 2019-11-13 20:27 ` Steven Rostedt 2019-11-01 22:11 ` [PATCH v4 09/17] arm64: kprobes: fix kprobes " Sami Tolvanen 2019-11-01 22:11 ` [PATCH v4 10/17] arm64: disable kretprobes with SCS Sami Tolvanen 2019-11-04 17:04 ` Mark Rutland 2019-11-04 23:42 ` Sami Tolvanen 2019-11-05 9:04 ` Mark Rutland 2019-11-01 22:11 ` [PATCH v4 11/17] arm64: disable function graph tracing " Sami Tolvanen 2019-11-04 17:11 ` Mark Rutland 2019-11-04 23:44 ` Sami Tolvanen 2019-11-05 9:15 ` Mark Rutland 2019-11-05 20:00 ` Nick Desaulniers 2019-11-05 22:05 ` Sami Tolvanen 2019-11-01 22:11 ` [PATCH v4 12/17] arm64: reserve x18 from general allocation " Sami Tolvanen 2019-11-01 22:11 ` [PATCH v4 13/17] arm64: preserve x18 when CPU is suspended Sami Tolvanen 2019-11-04 13:20 ` Marc Zyngier 2019-11-04 21:38 ` Sami Tolvanen 2019-11-04 21:59 ` Nick Desaulniers 2019-11-05 0:02 ` Sami Tolvanen 2019-11-05 14:55 ` Marc Zyngier 2019-11-01 22:11 ` [PATCH v4 14/17] arm64: efi: restore x18 if it was corrupted Sami Tolvanen 2019-11-01 22:11 ` [PATCH v4 15/17] arm64: vdso: disable Shadow Call Stack Sami Tolvanen 2019-11-01 22:11 ` [PATCH v4 16/17] arm64: disable SCS for hypervisor code Sami Tolvanen 2019-11-01 22:11 ` [PATCH v4 17/17] arm64: implement Shadow Call Stack Sami Tolvanen 2019-11-05 23:55 ` [PATCH v5 00/14] add support for Clang's " Sami Tolvanen 2019-11-05 23:55 ` [PATCH v5 01/14] arm64: mm: avoid x18 in idmap_kpti_install_ng_mappings Sami Tolvanen 2019-11-05 23:55 ` [PATCH v5 02/14] arm64/lib: copy_page: avoid x18 register in assembler code Sami Tolvanen 2019-11-05 23:55 ` [PATCH v5 03/14] arm64: kvm: stop treating register x18 as caller save Sami Tolvanen 2019-11-05 23:55 ` [PATCH v5 04/14] arm64: kernel: avoid x18 in __cpu_soft_restart Sami Tolvanen 2019-11-05 23:55 ` [PATCH v5 05/14] add support for Clang's Shadow Call Stack (SCS) Sami Tolvanen 2019-11-15 15:37 ` Mark Rutland 2019-11-15 18:34 ` Sami Tolvanen 2019-11-05 23:56 ` [PATCH v5 06/14] scs: add accounting Sami Tolvanen 2019-11-05 23:56 ` [PATCH v5 07/14] scs: add support for stack usage debugging Sami Tolvanen 2019-11-05 23:56 ` [PATCH v5 08/14] arm64: disable function graph tracing with SCS Sami Tolvanen 2019-11-15 14:18 ` Mark Rutland 2019-11-05 23:56 ` [PATCH v5 09/14] arm64: reserve x18 from general allocation " Sami Tolvanen 2019-11-05 23:56 ` [PATCH v5 10/14] arm64: preserve x18 when CPU is suspended Sami Tolvanen 2019-11-06 20:39 ` Nick Desaulniers 2019-11-15 14:27 ` Mark Rutland 2019-11-05 23:56 ` [PATCH v5 11/14] arm64: efi: restore x18 if it was corrupted Sami Tolvanen 2019-11-06 4:45 ` Miguel Ojeda 2019-11-07 10:51 ` Ard Biesheuvel 2019-11-07 16:26 ` Sami Tolvanen 2019-11-05 23:56 ` [PATCH v5 12/14] arm64: vdso: disable Shadow Call Stack Sami Tolvanen 2019-11-15 14:43 ` Mark Rutland 2019-11-05 23:56 ` [PATCH v5 13/14] arm64: disable SCS for hypervisor code Sami Tolvanen 2019-11-15 14:46 ` Mark Rutland 2019-11-05 23:56 ` [PATCH v5 14/14] arm64: implement Shadow Call Stack Sami Tolvanen 2019-11-15 15:20 ` Mark Rutland 2019-11-15 20:19 ` Sami Tolvanen 2019-11-18 23:13 ` Sami Tolvanen 2019-11-12 23:44 ` [PATCH v5 00/14] add support for Clang's " Kees Cook 2019-11-13 12:03 ` Will Deacon 2019-11-13 18:33 ` Kees Cook 2019-11-15 14:16 ` Mark Rutland 2019-12-06 22:13 ` [PATCH v6 00/15] " Sami Tolvanen 2019-12-06 22:13 ` [PATCH v6 01/15] arm64: mm: avoid x18 in idmap_kpti_install_ng_mappings Sami Tolvanen 2019-12-06 22:13 ` [PATCH v6 02/15] arm64/lib: copy_page: avoid x18 register in assembler code Sami Tolvanen 2019-12-06 22:13 ` [PATCH v6 03/15] arm64: kvm: stop treating register x18 as caller save Sami Tolvanen 2019-12-06 22:13 ` [PATCH v6 04/15] arm64: kernel: avoid x18 in __cpu_soft_restart Sami Tolvanen 2019-12-06 22:13 ` [PATCH v6 05/15] add support for Clang's Shadow Call Stack (SCS) Sami Tolvanen 2019-12-06 22:13 ` [PATCH v6 06/15] scs: add accounting Sami Tolvanen 2019-12-06 22:13 ` [PATCH v6 07/15] scs: add support for stack usage debugging Sami Tolvanen 2019-12-06 22:13 ` [PATCH v6 08/15] arm64: disable function graph tracing with SCS Sami Tolvanen 2019-12-06 22:13 ` [PATCH v6 09/15] arm64: reserve x18 from general allocation " Sami Tolvanen 2019-12-06 22:13 ` [PATCH v6 10/15] arm64: preserve x18 when CPU is suspended Sami Tolvanen 2019-12-06 22:13 ` [PATCH v6 11/15] arm64: efi: restore x18 if it was corrupted Sami Tolvanen 2019-12-06 22:13 ` [PATCH v6 12/15] arm64: vdso: disable Shadow Call Stack Sami Tolvanen 2019-12-06 22:13 ` [PATCH v6 13/15] arm64: disable SCS for hypervisor code Sami Tolvanen 2019-12-06 22:13 ` [PATCH v6 14/15] arm64: implement Shadow Call Stack Sami Tolvanen 2019-12-06 22:13 ` [PATCH v6 15/15] arm64: scs: add shadow stacks for SDEI Sami Tolvanen
Reply instructions: You may reply publically 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=201910312048.3B34452@keescook \ --to=keescook@chromium.org \ --cc=Dave.Martin@arm.com \ --cc=ard.biesheuvel@linaro.org \ --cc=catalin.marinas@arm.com \ --cc=clang-built-linux@googlegroups.com \ --cc=jannh@google.com \ --cc=kernel-hardening@lists.openwall.com \ --cc=labbott@redhat.com \ --cc=linux-arm-kernel@lists.infradead.org \ --cc=linux-kernel@vger.kernel.org \ --cc=mark.rutland@arm.com \ --cc=mhiramat@kernel.org \ --cc=miguel.ojeda.sandonis@gmail.com \ --cc=ndesaulniers@google.com \ --cc=rostedt@goodmis.org \ --cc=samitolvanen@google.com \ --cc=will@kernel.org \ --cc=yamada.masahiro@socionext.com \ /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
Kernel-hardening archive on lore.kernel.org Archives are clonable: git clone --mirror https://lore.kernel.org/kernel-hardening/0 kernel-hardening/git/0.git # If you have public-inbox 1.1+ installed, you may # initialize and index your mirror using the following commands: public-inbox-init -V2 kernel-hardening kernel-hardening/ https://lore.kernel.org/kernel-hardening \ kernel-hardening@lists.openwall.com public-inbox-index kernel-hardening Example config snippet for mirrors Newsgroup available over NNTP: nntp://nntp.lore.kernel.org/com.openwall.lists.kernel-hardening AGPL code for this site: git clone https://public-inbox.org/public-inbox.git