diff options
Diffstat (limited to 'arch/x86/mm/pti.c')
| -rw-r--r-- | arch/x86/mm/pti.c | 13 |
1 files changed, 3 insertions, 10 deletions
diff --git a/arch/x86/mm/pti.c b/arch/x86/mm/pti.c index 843aa10a4cb6..a8a924b3c335 100644 --- a/arch/x86/mm/pti.c +++ b/arch/x86/mm/pti.c @@ -34,7 +34,6 @@ #include <asm/vsyscall.h> #include <asm/cmdline.h> #include <asm/pti.h> -#include <asm/pgtable.h> #include <asm/pgalloc.h> #include <asm/tlbflush.h> #include <asm/desc.h> @@ -448,13 +447,7 @@ static void __init pti_clone_user_shared(void) * the sp1 and sp2 slots. * * This is done for all possible CPUs during boot to ensure - * that it's propagated to all mms. If we were to add one of - * these mappings during CPU hotplug, we would need to take - * some measure to make sure that every mm that subsequently - * ran on that CPU would have the relevant PGD entry in its - * pagetables. The usual vmalloc_fault() mechanism would not - * work for page faults taken in entry_SYSCALL_64 before RSP - * is set up. + * that it's propagated to all mms. */ unsigned long va = (unsigned long)&per_cpu(cpu_tss_rw, cpu); @@ -499,12 +492,12 @@ static void __init pti_setup_espfix64(void) } /* - * Clone the populated PMDs of the entry and irqentry text and force it RO. + * Clone the populated PMDs of the entry text and force it RO. */ static void pti_clone_entry_text(void) { pti_clone_pgtable((unsigned long) __entry_text_start, - (unsigned long) __irqentry_text_end, + (unsigned long) __entry_text_end, PTI_CLONE_PMD); } |