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Author	SHA1	Message	Date
Al Viro	c120f3b81e	x86: switch cp_stat64() to unsafe_put_user() Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>	2020-06-03 16:59:21 -04:00
Brian Gerst	121b32a58a	x86/entry/32: Use IA32-specific wrappers for syscalls taking 64-bit arguments For the 32-bit syscall interface, 64-bit arguments (loff_t) are passed via a pair of 32-bit registers. These register pairs end up in consecutive stack slots, which matches the C ABI for 64-bit arguments. But when accessing the registers directly from pt_regs, the wrapper needs to manually reassemble the 64-bit value. These wrappers already exist for 32-bit compat, so make them available to 32-bit native in preparation for enabling pt_regs-based syscalls. Signed-off-by: Brian Gerst <brgerst@gmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Dominik Brodowski <linux@dominikbrodowski.net> Link: https://lkml.kernel.org/r/20200313195144.164260-16-brgerst@gmail.com	2020-03-21 16:03:24 +01:00

Author

SHA1

Message

Date

Al Viro

c120f3b81e

x86: switch cp_stat64() to unsafe_put_user()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

2020-06-03 16:59:21 -04:00

Brian Gerst

121b32a58a

x86/entry/32: Use IA32-specific wrappers for syscalls taking 64-bit arguments

For the 32-bit syscall interface, 64-bit arguments (loff_t) are passed via
a pair of 32-bit registers.  These register pairs end up in consecutive stack
slots, which matches the C ABI for 64-bit arguments.  But when accessing the
registers directly from pt_regs, the wrapper needs to manually reassemble the
64-bit value.  These wrappers already exist for 32-bit compat, so make them
available to 32-bit native in preparation for enabling pt_regs-based syscalls.

Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Dominik Brodowski <linux@dominikbrodowski.net>
Link: https://lkml.kernel.org/r/20200313195144.164260-16-brgerst@gmail.com

2020-03-21 16:03:24 +01:00

2 Commits