These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / arch / parisc / mm / init.c

diff --git a/kernel/arch/parisc/mm/init.c b/kernel/arch/parisc/mm/init.c
index c229427..1b366c4 100644 (file)
--- a/kernel/arch/parisc/mm/init.c
+++ b/kernel/arch/parisc/mm/init.c
@@ -23,6 +23,7 @@
 #include <linux/unistd.h>
 #include <linux/nodemask.h>    /* for node_online_map */
 #include <linux/pagemap.h>     /* for release_pages and page_cache_release */
+#include <linux/compat.h>
 
 #include <asm/pgalloc.h>
 #include <asm/pgtable.h>
@@ -30,6 +31,7 @@
 #include <asm/pdc_chassis.h>
 #include <asm/mmzone.h>
 #include <asm/sections.h>
+#include <asm/msgbuf.h>
 
 extern int  data_start;
 extern void parisc_kernel_start(void); /* Kernel entry point in head.S */
@@ -407,15 +409,11 @@ static void __init map_pages(unsigned long start_vaddr,
        unsigned long vaddr;
        unsigned long ro_start;
        unsigned long ro_end;
-       unsigned long fv_addr;
-       unsigned long gw_addr;
-       extern const unsigned long fault_vector_20;
-       extern void * const linux_gateway_page;
+       unsigned long kernel_end;
 
        ro_start = __pa((unsigned long)_text);
        ro_end   = __pa((unsigned long)&data_start);
-       fv_addr  = __pa((unsigned long)&fault_vector_20) & PAGE_MASK;
-       gw_addr  = __pa((unsigned long)&linux_gateway_page) & PAGE_MASK;
+       kernel_end  = __pa((unsigned long)&_end);
 
        end_paddr = start_paddr + size;
 
@@ -473,24 +471,25 @@ static void __init map_pages(unsigned long start_vaddr,
                        for (tmp2 = start_pte; tmp2 < PTRS_PER_PTE; tmp2++, pg_table++) {
                                pte_t pte;
 
-                               /*
-                                * Map the fault vector writable so we can
-                                * write the HPMC checksum.
-                                */
                                if (force)
                                        pte =  __mk_pte(address, pgprot);
-                               else if (parisc_text_address(vaddr) &&
-                                        address != fv_addr)
+                               else if (parisc_text_address(vaddr)) {
                                        pte = __mk_pte(address, PAGE_KERNEL_EXEC);
+                                       if (address >= ro_start && address < kernel_end)
+                                               pte = pte_mkhuge(pte);
+                               }
                                else
 #if defined(CONFIG_PARISC_PAGE_SIZE_4KB)
-                               if (address >= ro_start && address < ro_end
-                                                       && address != fv_addr
-                                                       && address != gw_addr)
-                                       pte = __mk_pte(address, PAGE_KERNEL_RO);
-                               else
+                               if (address >= ro_start && address < ro_end) {
+                                       pte = __mk_pte(address, PAGE_KERNEL_EXEC);
+                                       pte = pte_mkhuge(pte);
+                               } else
 #endif
+                               {
                                        pte = __mk_pte(address, pgprot);
+                                       if (address >= ro_start && address < kernel_end)
+                                               pte = pte_mkhuge(pte);
+                               }
 
                                if (address >= end_paddr) {
                                        if (force)
@@ -534,15 +533,12 @@ void free_initmem(void)
 
        /* force the kernel to see the new TLB entries */
        __flush_tlb_range(0, init_begin, init_end);
-       /* Attempt to catch anyone trying to execute code here
-        * by filling the page with BRK insns.
-        */
-       memset((void *)init_begin, 0x00, init_end - init_begin);
+
        /* finally dump all the instructions which were cached, since the
         * pages are no-longer executable */
        flush_icache_range(init_begin, init_end);
        
-       free_initmem_default(-1);
+       free_initmem_default(POISON_FREE_INITMEM);
 
        /* set up a new led state on systems shipped LED State panel */
        pdc_chassis_send_status(PDC_CHASSIS_DIRECT_BCOMPLETE);
@@ -590,6 +586,20 @@ unsigned long pcxl_dma_start __read_mostly;
 
 void __init mem_init(void)
 {
+       /* Do sanity checks on IPC (compat) structures */
+       BUILD_BUG_ON(sizeof(struct ipc64_perm) != 48);
+#ifndef CONFIG_64BIT
+       BUILD_BUG_ON(sizeof(struct semid64_ds) != 80);
+       BUILD_BUG_ON(sizeof(struct msqid64_ds) != 104);
+       BUILD_BUG_ON(sizeof(struct shmid64_ds) != 104);
+#endif
+#ifdef CONFIG_COMPAT
+       BUILD_BUG_ON(sizeof(struct compat_ipc64_perm) != sizeof(struct ipc64_perm));
+       BUILD_BUG_ON(sizeof(struct compat_semid64_ds) != 80);
+       BUILD_BUG_ON(sizeof(struct compat_msqid64_ds) != 104);
+       BUILD_BUG_ON(sizeof(struct compat_shmid64_ds) != 104);
+#endif
+
        /* Do sanity checks on page table constants */
        BUILD_BUG_ON(PTE_ENTRY_SIZE != sizeof(pte_t));
        BUILD_BUG_ON(PMD_ENTRY_SIZE != sizeof(pmd_t));
@@ -712,8 +722,8 @@ static void __init pagetable_init(void)
                unsigned long size;
 
                start_paddr = pmem_ranges[range].start_pfn << PAGE_SHIFT;
-               end_paddr = start_paddr + (pmem_ranges[range].pages << PAGE_SHIFT);
                size = pmem_ranges[range].pages << PAGE_SHIFT;
+               end_paddr = start_paddr + size;
 
                map_pages((unsigned long)__va(start_paddr), start_paddr,
                          size, PAGE_KERNEL, 0);