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| Started by | Andy Lutomirski <luto@kernel.org> |
|---|---|
| First post | 2016-01-31 18:40 +0100 |
| Last post | 2016-02-01 09:10 +0100 |
| Articles | 2 — 2 participants |
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[PATCH 3/3] x86/syscalls/64: Mark sys_iopl as using ptregs Andy Lutomirski <luto@kernel.org> - 2016-01-31 18:40 +0100
[tip:x86/asm] x86/syscalls/64: Mark sys_iopl() as using ptregs tip-bot for Andy Lutomirski <tipbot@zytor.com> - 2016-02-01 09:10 +0100
| From | Andy Lutomirski <luto@kernel.org> |
|---|---|
| Date | 2016-01-31 18:40 +0100 |
| Subject | [PATCH 3/3] x86/syscalls/64: Mark sys_iopl as using ptregs |
| Message-ID | <qX48F-6C6-3@gated-at.bofh.it> |
sys_iopl both reads and writes pt_regs->flags. Mark it as using ptregs. This isn't strictly necessary, as pt_regs->flags is available even in the fast path, but this is very lightweight now that we have syscall qualifiers and it could avoid some pain down the road. Signed-off-by: Andy Lutomirski <luto@kernel.org> --- arch/x86/entry/syscalls/syscall_64.tbl | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/entry/syscalls/syscall_64.tbl b/arch/x86/entry/syscalls/syscall_64.tbl index dcf107ce2cd4..2e5b565adacc 100644 --- a/arch/x86/entry/syscalls/syscall_64.tbl +++ b/arch/x86/entry/syscalls/syscall_64.tbl @@ -178,7 +178,7 @@ 169 common reboot sys_reboot 170 common sethostname sys_sethostname 171 common setdomainname sys_setdomainname -172 common iopl sys_iopl +172 common iopl sys_iopl/ptregs 173 common ioperm sys_ioperm 174 64 create_module 175 common init_module sys_init_module -- 2.5.0
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| From | tip-bot for Andy Lutomirski <tipbot@zytor.com> |
|---|---|
| Date | 2016-02-01 09:10 +0100 |
| Subject | [tip:x86/asm] x86/syscalls/64: Mark sys_iopl() as using ptregs |
| Message-ID | <qXhIC-8c0-17@gated-at.bofh.it> |
| In reply to | #1322685 |
Commit-ID: bb56968a37a44070de92d5690c4b08dd98a5d3f1 Gitweb: http://git.kernel.org/tip/bb56968a37a44070de92d5690c4b08dd98a5d3f1 Author: Andy Lutomirski <luto@kernel.org> AuthorDate: Sun, 31 Jan 2016 09:33:28 -0800 Committer: Ingo Molnar <mingo@kernel.org> CommitDate: Mon, 1 Feb 2016 08:53:25 +0100 x86/syscalls/64: Mark sys_iopl() as using ptregs sys_iopl() both reads and writes pt_regs->flags. Mark it as using ptregs. This isn't strictly necessary, as pt_regs->flags is available even in the fast path, but this is very lightweight now that we have syscall qualifiers and it could avoid some pain down the road. Reported-and-tested-by: Borislav Petkov <bp@suse.de> Signed-off-by: Andy Lutomirski <luto@kernel.org> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/3de0ca692fa8bf414c5e3d7afe3e6195d1a10e1f.1454261517.git.luto@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org> --- arch/x86/entry/syscalls/syscall_64.tbl | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/entry/syscalls/syscall_64.tbl b/arch/x86/entry/syscalls/syscall_64.tbl index dcf107c..2e5b565 100644 --- a/arch/x86/entry/syscalls/syscall_64.tbl +++ b/arch/x86/entry/syscalls/syscall_64.tbl @@ -178,7 +178,7 @@ 169 common reboot sys_reboot 170 common sethostname sys_sethostname 171 common setdomainname sys_setdomainname -172 common iopl sys_iopl +172 common iopl sys_iopl/ptregs 173 common ioperm sys_ioperm 174 64 create_module 175 common init_module sys_init_module
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