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watchdog: hpwdt: Changes to handle NX secure bit in 32bit path

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This patch makes use of the set_memory_x() kernel API in order
to make necessary BIOS calls to source NMIs.

This is needed for SLES11 SP2 and the latest upstream kernel as it appears
the NX Execute Disable has grown in its control.

Signed-off by: Thomas Mingarelli <thomas.mingarelli@hp.com>
Signed-off by: Wim Van Sebroeck <wim@iguana.be>
Cc: stable@kernel.org
This commit is contained in:
Mingarelli, Thomas 2011-11-07 10:59:00 +01:00 committed by Wim Van Sebroeck
parent bb558dac67
commit e67d668e14
1 changed files with 4 additions and 1 deletions
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5
drivers/watchdog/hpwdt.c
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@ -231,6 +231,7 @@ static int __devinit cru_detect(unsigned long map_entry,
cmn_regs.u1.reax = CRU_BIOS_SIGNATURE_VALUE;
set_memory_x((unsigned long)bios32_entrypoint, (2 * PAGE_SIZE));
asminline_call(&cmn_regs, bios32_entrypoint);
if (cmn_regs.u1.ral != 0) {
@ -248,8 +249,10 @@ static int __devinit cru_detect(unsigned long map_entry,
if ((physical_bios_base + physical_bios_offset)) {
cru_rom_addr =
ioremap(cru_physical_address, cru_length);
if (cru_rom_addr)
if (cru_rom_addr) {
set_memory_x((unsigned long)cru_rom_addr, cru_length);
retval = 0;
}
}
printk(KERN_DEBUG "hpwdt: CRU Base Address: 0x%lx\n",