This reverts commit 6a7b4041b853ecc653e2c1dda5b736ab5fd29357.
With the PGD-propagation logic simplified, there's no need for this.
---
arch/x86/Kconfig | 8 --------
1 file changed, 8 deletions(-)
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 411838058194..babb1e53b0a6 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -2233,9 +2233,6 @@ choice
config LEGACY_VSYSCALL_NATIVE
bool "Native"
- # The VSYSCALL page comes from the kernel page tables
- # and is not available when PAGE_TABLE_ISOLATION is enabled.
- depends on !PAGE_TABLE_ISOLATION
help
Actual executable code is located in the fixed vsyscall
address mapping, implementing time() efficiently. Since
@@ -2253,11 +2250,6 @@ choice
exploits. This configuration is recommended when userspace
still uses the vsyscall area.
- When PAGE_TABLE_ISOLATION is enabled, the vsyscall area will
become
- unreadable. This emulation option still works, but
PAGE_TABLE_ISOLATION
- will make it harder to do things like trace code using the
- emulation.
-
config LEGACY_VSYSCALL_NONE
bool "None"
help
--
2.13.6
