[IA64] MCA recovery based on PSP bits (a14f25a0) · Commits · 戴 / test

The determination of whether an MCA is recoverable or not must be based on the bits set in the PSP (Processor State Parameter). The specific bits are shown in the Intel IA-64 Architecture Software Developer's Manual, Vol 2, Table 11-6 Software Recovery Bits in Processor State Parameter. Those bits should be consistent across the entire IA-64 family of processors. Signed-off-by:

Russ Anderson <rja@sgi.com> Signed-off-by:

Tony Luck <tony.luck@intel.com>

arch/ia64/kernel/mca_drv.c

+13 −4

Original line number	Diff line number	Diff line
		@@ -546,9 +546,20 @@ recover_from_processor_error(int platform, slidx_table_t *slidx,
		(pal_processor_state_info_t*)peidx_psp(peidx);

		/*
		* We cannot recover errors with other than bus_check.
		* Processor recovery status must key off of the PAL recovery
		* status in the Processor State Parameter.
		*/
		if (psp->cc \|\| psp->rc \|\| psp->uc)

		/*
		* The machine check is corrected.
		*/
		if (psp->cm == 1)
		return 1;

		/*
		* The error was not contained. Software must be reset.
		*/
		if (psp->us \|\| psp->ci == 0)
		return 0;

		/*
		@@ -569,8 +580,6 @@ recover_from_processor_error(int platform, slidx_table_t *slidx,
		return 0;
		if (pbci->eb && pbci->bsi > 0)
		return 0;
		if (psp->ci == 0)
		return 0;

		/*
		* This is a local MCA and estimated as recoverble external bus error.

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