From: Thomas Gleixner <[email protected]> The (irq)entry text must be visible in the user space page tables. To allow simple PMD based sharing, make the entry text PMD aligned.
Signed-off-by: Thomas Gleixner <[email protected]> Signed-off-by: Ingo Molnar <[email protected]> Cc: Andy Lutomirski <[email protected]> Cc: Boris Ostrovsky <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Brian Gerst <[email protected]> Cc: Dave Hansen <[email protected]> Cc: David Laight <[email protected]> Cc: Denys Vlasenko <[email protected]> Cc: Eduardo Valentin <[email protected]> Cc: Greg KH <[email protected]> Cc: H. Peter Anvin <[email protected]> Cc: Josh Poimboeuf <[email protected]> Cc: Juergen Gross <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Will Deacon <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] --- arch/x86/kernel/vmlinux.lds.S | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S index d2a8b5a24a44..fe3084f270af 100644 --- a/arch/x86/kernel/vmlinux.lds.S +++ b/arch/x86/kernel/vmlinux.lds.S @@ -61,11 +61,17 @@ jiffies_64 = jiffies; . = ALIGN(HPAGE_SIZE); \ __end_rodata_hpage_align = .; +#define ALIGN_ENRTY_TEXT_BEGIN . = ALIGN(PMD_SIZE); +#define ALIGN_ENRTY_TEXT_END . = ALIGN(PMD_SIZE); + #else #define X64_ALIGN_RODATA_BEGIN #define X64_ALIGN_RODATA_END +#define ALIGN_ENRTY_TEXT_BEGIN +#define ALIGN_ENRTY_TEXT_END + #endif PHDRS { @@ -102,8 +108,10 @@ SECTIONS CPUIDLE_TEXT LOCK_TEXT KPROBES_TEXT + ALIGN_ENRTY_TEXT_BEGIN ENTRY_TEXT IRQENTRY_TEXT + ALIGN_ENRTY_TEXT_END SOFTIRQENTRY_TEXT *(.fixup) *(.gnu.warning) -- 2.14.1
