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Commit 3e6bdf47 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86 

* git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86:
  x86: fix deadlock, make pgd_lock irq-safe
  virtio: fix trivial build bug
  x86: fix mttr trimming
  x86: delay CPA self-test and repeat it
  x86: fix 64-bit sections
  generic: add __FINITDATA
  x86: remove suprious ifdefs from pageattr.c
  x86: mark the .rodata section also NX
  x86: fix iret exception recovery on 64-bit
  cpuidle: dubious one-bit signed bitfield in cpuidle.h
  x86: fix sparse warnings in powernow-k8.c
  x86: fix sparse error in traps_32.c
  x86: trivial sparse/checkpatch in quirks.c
  x86 ptrace: disallow null cs/ss
  MAINTAINERS: RDC R-321x SoC maintainer
  brk randomization: introduce CONFIG_COMPAT_BRK
  brk: check the lower bound properly
  x86: remove X2 workaround
  x86: make spurious fault handler aware of large mappings
  x86: make traps on entry code be debuggable in user space, 64-bit
parents 3d4d4582 58d5d0d8

MAINTAINERS

+6 −0
Original line number Diff line number Diff line
@@ -3224,6 +3224,12 @@ M: mporter@kernel.crashing.org 
L:	linux-kernel@vger.kernel.org

S:	Maintained



RDC R-321X SoC

P:	Florian Fainelli

M:	florian.fainelli@telecomint.eu

L:	linux-kernel@vger.kernel.org

S:	Maintained



RDC R6040 FAST ETHERNET DRIVER

P:	Florian Fainelli

M:	florian.fainelli@telecomint.eu

arch/x86/Kconfig.debug

+2 −2
Original line number Diff line number Diff line
@@ -220,9 +220,9 @@ config DEBUG_BOOT_PARAMS 
	  This option will cause struct boot_params to be exported via debugfs.



config CPA_DEBUG

	bool "CPA self test code"

	bool "CPA self-test code"

	depends on DEBUG_KERNEL

	help

	  Do change_page_attr self tests at boot.

	  Do change_page_attr() self-tests every 30 seconds.



endmenu

arch/x86/kernel/cpu/cpufreq/powernow-k8.c

+0 −1
Original line number Diff line number Diff line
@@ -827,7 +827,6 @@ static int fill_powernow_table_pstate(struct powernow_k8_data *data, struct cpuf 


	for (i = 0; i < data->acpi_data.state_count; i++) {

		u32 index;

		u32 hi = 0, lo = 0;



		index = data->acpi_data.states[i].control & HW_PSTATE_MASK;

		if (index > data->max_hw_pstate) {

arch/x86/kernel/cpu/mtrr/main.c

+9 −10
Original line number Diff line number Diff line
@@ -659,7 +659,7 @@ static __init int amd_special_default_mtrr(void) 
 */

int __init mtrr_trim_uncached_memory(unsigned long end_pfn)

{

	unsigned long i, base, size, highest_addr = 0, def, dummy;

	unsigned long i, base, size, highest_pfn = 0, def, dummy;

	mtrr_type type;

	u64 trim_start, trim_size;
@@ -682,28 +682,27 @@ int __init mtrr_trim_uncached_memory(unsigned long end_pfn) 
		mtrr_if->get(i, &base, &size, &type);

		if (type != MTRR_TYPE_WRBACK)

			continue;

		base <<= PAGE_SHIFT;

		size <<= PAGE_SHIFT;

		if (highest_addr < base + size)

			highest_addr = base + size;

		if (highest_pfn < base + size)

			highest_pfn = base + size;

	}



	/* kvm/qemu doesn't have mtrr set right, don't trim them all */

	if (!highest_addr) {

	if (!highest_pfn) {

		printk(KERN_WARNING "WARNING: strange, CPU MTRRs all blank?\n");

		WARN_ON(1);

		return 0;

	}



	if ((highest_addr >> PAGE_SHIFT) < end_pfn) {

	if (highest_pfn < end_pfn) {

		printk(KERN_WARNING "WARNING: BIOS bug: CPU MTRRs don't cover"

			" all of memory, losing %LdMB of RAM.\n",

			(((u64)end_pfn << PAGE_SHIFT) - highest_addr) >> 20);

			" all of memory, losing %luMB of RAM.\n",

			(end_pfn - highest_pfn) >> (20 - PAGE_SHIFT));



		WARN_ON(1);



		printk(KERN_INFO "update e820 for mtrr\n");

		trim_start = highest_addr;

		trim_start = highest_pfn;

		trim_start <<= PAGE_SHIFT;

		trim_size = end_pfn;

		trim_size <<= PAGE_SHIFT;

		trim_size -= trim_start;

arch/x86/kernel/entry_64.S

+16 −8
Original line number Diff line number Diff line
@@ -582,7 +582,6 @@ retint_restore_args: /* return to kernel space */ 
	TRACE_IRQS_IRETQ

restore_args:

	RESTORE_ARGS 0,8,0						

iret_label:	

#ifdef CONFIG_PARAVIRT

	INTERRUPT_RETURN

#endif
@@ -593,13 +592,22 @@ ENTRY(native_iret) 
	.quad native_iret, bad_iret

	.previous

	.section .fixup,"ax"

	/* force a signal here? this matches i386 behaviour */

	/* running with kernel gs */

bad_iret:

	movq $11,%rdi	/* SIGSEGV */

	TRACE_IRQS_ON

	ENABLE_INTERRUPTS(CLBR_ANY | ~(CLBR_RDI))

	jmp do_exit

	/*

	 * The iret traps when the %cs or %ss being restored is bogus.

	 * We've lost the original trap vector and error code.

	 * #GPF is the most likely one to get for an invalid selector.

	 * So pretend we completed the iret and took the #GPF in user mode.

	 *

	 * We are now running with the kernel GS after exception recovery.

	 * But error_entry expects us to have user GS to match the user %cs,

	 * so swap back.

	 */

	pushq $0



	SWAPGS

	jmp general_protection



	.previous



	/* edi: workmask, edx: work */
@@ -911,7 +919,7 @@ error_kernelspace: 
	   iret run with kernel gs again, so don't set the user space flag.

	   B stepping K8s sometimes report an truncated RIP for IRET 

	   exceptions returning to compat mode. Check for these here too. */

	leaq iret_label(%rip),%rbp

	leaq native_iret(%rip),%rbp

	cmpq %rbp,RIP(%rsp) 

	je   error_swapgs

	movl %ebp,%ebp	/* zero extend */