diff options
| author | Thomas Gleixner <[email protected]> | 2017-12-04 15:07:46 +0100 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2017-12-23 21:13:00 +0100 |
| commit | 2f7412ba9c6af5ab16bdbb4a3fdb1dcd2b4fd3c2 (patch) | |
| tree | 0c497edd735accb24c3844a49dee8a12b69a8a34 | |
| parent | f7cfbee91559ca7e3e961a00ffac921208a115ad (diff) | |
x86/entry: Align entry text section to PMD boundary
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]>
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]
Signed-off-by: Ingo Molnar <[email protected]>
| -rw-r--r-- | arch/x86/kernel/vmlinux.lds.S | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S index d2a8b5a24a44..1e413a9326aa 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_ENTRY_TEXT_BEGIN . = ALIGN(PMD_SIZE); +#define ALIGN_ENTRY_TEXT_END . = ALIGN(PMD_SIZE); + #else #define X64_ALIGN_RODATA_BEGIN #define X64_ALIGN_RODATA_END +#define ALIGN_ENTRY_TEXT_BEGIN +#define ALIGN_ENTRY_TEXT_END + #endif PHDRS { @@ -102,8 +108,10 @@ SECTIONS CPUIDLE_TEXT LOCK_TEXT KPROBES_TEXT + ALIGN_ENTRY_TEXT_BEGIN ENTRY_TEXT IRQENTRY_TEXT + ALIGN_ENTRY_TEXT_END SOFTIRQENTRY_TEXT *(.fixup) *(.gnu.warning) |