lkml.org 
[lkml]   [2018]   [Feb]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v2 5/8] efi: Decode IA32/X64 Cache, TLB, and Bus Check structures
On Mon, Feb 26, 2018 at 01:39:01PM -0600, Yazen Ghannam wrote:
> +static void print_err_info(const char *pfx, u8 err_type, u64 check)
> +{
> + u16 validation_bits = CHECK_VALID_BITS(check);
> +
> + printk("%sValidation Bits: 0x%04x\n", pfx, validation_bits);
> +
> + if (err_type == ERR_TYPE_MS)
> + return;
> +
> + if (validation_bits & CHECK_VALID_TRANS_TYPE) {
> + u8 trans_type = CHECK_TRANS_TYPE(check);
> +
> + printk("%sTransaction Type: %u, %s\n", pfx, trans_type,
> + trans_type < ARRAY_SIZE(ia_check_trans_type_strs) ?
> + ia_check_trans_type_strs[trans_type] : "unknown");
> + }
> +
> + if (validation_bits & CHECK_VALID_OPERATION) {
> + u8 op = CHECK_OPERATION(check);
> +
> + /*
> + * CACHE has more operation types than TLB or BUS, though the
> + * name and the order are the same.
> + */
> + u8 max_ops = (err_type == ERR_TYPE_CACHE) ? 9 : 7;
> +
> + printk("%sOperation: %u, %s\n", pfx, op,
> + op < max_ops ? ia_check_op_strs[op] : "unknown");
> + }
> +
> + if (validation_bits & CHECK_VALID_LEVEL)
> + printk("%sLevel: %llu\n", pfx, CHECK_LEVEL(check));
> +
> + if (validation_bits & CHECK_VALID_PCC)
> + print_bool("Processor Context Corrupt", pfx, check, CHECK_PCC);

I think we want to print PCC here unconditionally and say:

PCC: (yes|no|invalid)

I don't think the absence of PCC in the error record is a good enough
hint that the PCC field is invalid.

Ditto for the rest and transaction type above too. I think it would be
much easier if we have fixed fields error record.

--
Regards/Gruss,
Boris.

SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg)
--

\
 
 \ /
  Last update: 2018-02-27 16:06    [W:0.321 / U:1.384 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site