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powerpc/pseries: hwpoison the pages upon hitting UE

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Add support to hwpoison the pages upon hitting machine check
exception.

This patch queues the address where UE is hit to percpu array
and schedules work to plumb it into memory poison infrastructure.

Reviewed-by: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>
Signed-off-by: Ganesh Goudar <ganeshgr@linux.ibm.com>
[mpe: Combine #ifdefs, drop PPC_BIT8(), and empty inline stub]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Ganesh Goudar
2019-04-15 15:35:44 +05:30
committed by Michael Ellerman
parent 4df2cb633b
commit 7f177f9810
3 changed files with 85 additions and 1 deletions
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2
arch/powerpc/kernel/mce_power.c
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@@ -36,7 +36,7 @@
* Convert an address related to an mm to a PFN. NOTE: we are in real
* mode, we could potentially race with page table updates.
*/
static unsigned long addr_to_pfn(struct pt_regs *regs, unsigned long addr)
unsigned long addr_to_pfn(struct pt_regs *regs, unsigned long addr)
{
pte_t *ptep;
unsigned long flags;