Gabriel Krisman Bertazi ff170cd059 x86/mm: Convert mmu context ia32_compat into a proper flags field ... The ia32_compat attribute is a weird thing. It mirrors TIF_IA32 and TIF_X32 and is used only in two very unrelated places: (1) to decide if the vsyscall page is accessible (2) for uprobes to find whether the patched instruction is 32 or 64 bit. In preparation to remove the TIF flags, a new mechanism is required for ia32_compat, but given its odd semantics, adding a real flags field which configures these specific behaviours is the best option. So, set_personality_x64() can ask for the vsyscall page, which is not available in x32/ia32 and set_personality_ia32() can configure the uprobe code as needed. uprobe cannot rely on other methods like user_64bit_mode() to decide how to patch, so it needs some specific flag like this. Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Andy Lutomirski<luto@kernel.org> Link: https://lore.kernel.org/r/20201004032536.1229030-10-krisman@collabora.com		2020-10-26 13:46:47 +01:00
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Makefile	x86/vdso: Switch to generic vDSO implementation	2019-06-22 21:21:10 +02:00
vsyscall_64.c	x86/mm: Convert mmu context ia32_compat into a proper flags field	2020-10-26 13:46:47 +01:00
vsyscall_emu_64.S	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 180	2019-05-30 11:29:20 -07:00
vsyscall_trace.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00