Merge tag 'powerpc-3.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux

Pull powerpc updates from Michael Ellerman:
 "Some nice cleanups like removing bootmem, and removal of
  __get_cpu_var().

  There is one patch to mm/gup.c.  This is the generic GUP
  implementation, but is only used by us and arm(64).  We have an ack
  from Steve Capper, and although we didn't get an ack from Andrew he
  told us to take the patch through the powerpc tree.

  There's one cxl patch.  This is in drivers/misc, but Greg said he was
  happy for us to manage fixes for it.

  There is an infrastructure patch to support an IPMI driver for OPAL.

  There is also an RTC driver for OPAL.  We weren't able to get any
  response from the RTC maintainer, Alessandro Zummo, so in the end we
  just merged the driver.

  The usual batch of Freescale updates from Scott"

* tag 'powerpc-3.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux: (101 commits)
  powerpc/powernv: Return to cpu offline loop when finished in KVM guest
  powerpc/book3s: Fix partial invalidation of TLBs in MCE code.
  powerpc/mm: don't do tlbie for updatepp request with NO HPTE fault
  powerpc/xmon: Cleanup the breakpoint flags
  powerpc/xmon: Enable HW instruction breakpoint on POWER8
  powerpc/mm/thp: Use tlbiel if possible
  powerpc/mm/thp: Remove code duplication
  powerpc/mm/hugetlb: Sanity check gigantic hugepage count
  powerpc/oprofile: Disable pagefaults during user stack read
  powerpc/mm: Check for matching hpte without taking hpte lock
  powerpc: Drop useless warning in eeh_init()
  powerpc/powernv: Cleanup unused MCE definitions/declarations.
  powerpc/eeh: Dump PHB diag-data early
  powerpc/eeh: Recover EEH error on ownership change for BCM5719
  powerpc/eeh: Set EEH_PE_RESET on PE reset
  powerpc/eeh: Refactor eeh_reset_pe()
  powerpc: Remove more traces of bootmem
  powerpc/pseries: Initialise nvram_pstore_info's buf_lock
  cxl: Name interrupts in /proc/interrupt
  cxl: Return error to PSL if IRQ demultiplexing fails & print clearer warning
  ...

1 files changed, 5 insertions, 55 deletions

diff --git a/arch/powerpc/mm/hugepage-hash64.c b/arch/powerpc/mm/hugepage-hash64.c
index 5f5e6328c21c..86686514ae13 100644
--- a/arch/powerpc/mm/hugepage-hash64.c
+++ b/arch/powerpc/mm/hugepage-hash64.c
@@ -18,60 +18,9 @@
 #include <linux/mm.h>
 #include <asm/machdep.h>
 
-static void invalidate_old_hpte(unsigned long vsid, unsigned long addr,
-				pmd_t *pmdp, unsigned int psize, int ssize)
-{
-	int i, max_hpte_count, valid;
-	unsigned long s_addr;
-	unsigned char *hpte_slot_array;
-	unsigned long hidx, shift, vpn, hash, slot;
-
-	s_addr = addr & HPAGE_PMD_MASK;
-	hpte_slot_array = get_hpte_slot_array(pmdp);
-	/*
-	 * IF we try to do a HUGE PTE update after a withdraw is done.
-	 * we will find the below NULL. This happens when we do
-	 * split_huge_page_pmd
-	 */
-	if (!hpte_slot_array)
-		return;
-
-	if (ppc_md.hugepage_invalidate)
-		return ppc_md.hugepage_invalidate(vsid, s_addr, hpte_slot_array,
-						  psize, ssize);
-	/*
-	 * No bluk hpte removal support, invalidate each entry
-	 */
-	shift = mmu_psize_defs[psize].shift;
-	max_hpte_count = HPAGE_PMD_SIZE >> shift;
-	for (i = 0; i < max_hpte_count; i++) {
-		/*
-		 * 8 bits per each hpte entries
-		 * 000| [ secondary group (one bit) | hidx (3 bits) | valid bit]
-		 */
-		valid = hpte_valid(hpte_slot_array, i);
-		if (!valid)
-			continue;
-		hidx =  hpte_hash_index(hpte_slot_array, i);
-
-		/* get the vpn */
-		addr = s_addr + (i * (1ul << shift));
-		vpn = hpt_vpn(addr, vsid, ssize);
-		hash = hpt_hash(vpn, shift, ssize);
-		if (hidx & _PTEIDX_SECONDARY)
-			hash = ~hash;
-
-		slot = (hash & htab_hash_mask) * HPTES_PER_GROUP;
-		slot += hidx & _PTEIDX_GROUP_IX;
-		ppc_md.hpte_invalidate(slot, vpn, psize,
-				       MMU_PAGE_16M, ssize, 0);
-	}
-}
-
-
 int __hash_page_thp(unsigned long ea, unsigned long access, unsigned long vsid,
-		    pmd_t *pmdp, unsigned long trap, int local, int ssize,
-		    unsigned int psize)
+		    pmd_t *pmdp, unsigned long trap, unsigned long flags,
+		    int ssize, unsigned int psize)
 {
 	unsigned int index, valid;
 	unsigned char *hpte_slot_array;
@@ -145,7 +94,8 @@ int __hash_page_thp(unsigned long ea, unsigned long access, unsigned long vsid,
 		 * hash page table entries.
 		 */
 		if ((old_pmd & _PAGE_HASHPTE) && !(old_pmd & _PAGE_COMBO))
-			invalidate_old_hpte(vsid, ea, pmdp, MMU_PAGE_64K, ssize);
+			flush_hash_hugepage(vsid, ea, pmdp, MMU_PAGE_64K,
+					    ssize, flags);
 	}
 
 	valid = hpte_valid(hpte_slot_array, index);
@@ -158,7 +108,7 @@ int __hash_page_thp(unsigned long ea, unsigned long access, unsigned long vsid,
 		slot += hidx & _PTEIDX_GROUP_IX;
 
 		ret = ppc_md.hpte_updatepp(slot, rflags, vpn,
-					   psize, lpsize, ssize, local);
+					   psize, lpsize, ssize, flags);
 		/*
 		 * We failed to update, try to insert a new entry.
 		 */