kernel_optimize_test/arch/x86/mm
Dexuan Cui d1cd121083 x86, pageattr: Prevent overflow in slow_virt_to_phys() for X86_PAE
pte_pfn() returns a PFN of long (32 bits in 32-PAE), so "long <<
PAGE_SHIFT" will overflow for PFNs above 4GB.

Due to this issue, some Linux 32-PAE distros, running as guests on Hyper-V,
with 5GB memory assigned, can't load the netvsc driver successfully and
hence the synthetic network device can't work (we can use the kernel parameter
mem=3000M to work around the issue).

Cast pte_pfn() to phys_addr_t before shifting.

Fixes: "commit d765653445: x86, mm: Create slow_virt_to_phys()"
Signed-off-by: Dexuan Cui <decui@microsoft.com>
Cc: K. Y. Srinivasan <kys@microsoft.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: gregkh@linuxfoundation.org
Cc: linux-mm@kvack.org
Cc: olaf@aepfle.de
Cc: apw@canonical.com
Cc: jasowang@redhat.com
Cc: dave.hansen@intel.com
Cc: riel@redhat.com
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/1414580017-27444-1-git-send-email-decui@microsoft.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-10-29 10:57:21 +01:00
..
kmemcheck x86: Replace __get_cpu_var uses 2014-08-26 13:45:49 -04:00
amdtopology.c
dump_pagetables.c x86-64, ptdump: Mark espfix area only if existent 2014-09-08 11:57:34 -07:00
extable.c
fault.c Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-10-14 02:22:41 +02:00
gup.c
highmem_32.c
hugetlbpage.c hugetlb: restrict hugepage_migration_support() to x86_64 2014-06-04 16:53:51 -07:00
init_32.c x86: remove the Xen-specific _PAGE_IOMAP PTE flag 2014-09-23 13:36:20 +00:00
init_64.c Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-10-14 02:22:41 +02:00
init.c x86/mm: Add tracepoints for TLB flushes 2014-07-31 08:48:51 -07:00
iomap_32.c
ioremap.c x86: use optimized ioresource lookup in ioremap function 2014-10-14 02:18:22 +02:00
kmmio.c
Makefile
memtest.c
mm_internal.h
mmap.c x86/mm: Apply the section attribute to the variable, not its type 2014-09-09 07:13:39 +02:00
mmio-mod.c
numa_32.c
numa_64.c
numa_emulation.c
numa_internal.h
numa.c Merge branch 'akpm' (patches from Andrew Morton) 2014-10-14 03:54:50 +02:00
pageattr-test.c x86: define _PAGE_NUMA by reusing software bits on the PMD and PTE levels 2014-06-04 16:53:55 -07:00
pageattr.c x86, pageattr: Prevent overflow in slow_virt_to_phys() for X86_PAE 2014-10-29 10:57:21 +01:00
pat_internal.h
pat_rbtree.c
pat.c
pf_in.c
pf_in.h
pgtable_32.c x86: Remove set_pmd_pfn 2014-09-01 10:15:31 +02:00
pgtable.c Merge branch 'x86/vdso' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into next 2014-06-05 08:05:29 -07:00
physaddr.c
physaddr.h
setup_nx.c
srat.c x86/mm: Avoid duplicated pxm_to_node() calls 2014-02-09 15:32:31 +01:00
testmmiotrace.c
tlb.c x86/mm: Fix sparse 'tlb_single_page_flush_ceiling' warning and make the variable read-mostly 2014-08-10 09:07:18 +02:00