CC Will and Jonathan
On 2017/8/16 21:55, Baicar, Tyler wrote:
> On 8/16/2017 2:14 AM, Dongjiu Geng wrote:
>> The revision 0x300 generic error data entry is different
>> from the old version, but currently iterating through the
>> GHES estatus blocks does not take into account this difference.
>> This will lead to failure to get the right data entry if GHES
>> has revision 0x300 error data entry.
>>
>> Update the GHES estatus iteration to properly increment using
>> acpi_hest_get_next, and correct the iteration termination condition
>> because the status block data length only includes error data length.
>> Clear the CPER estatus printing iteration logic to use same macro.
>>
>> Signed-off-by: Dongjiu Geng <gengdongjiu@xxxxxxxxxx>
>> CC: Tyler Baicar <tbaicar@xxxxxxxxxxxxxx>
> Tested-by: Tyler Baicar <tbaicar@xxxxxxxxxxxxxx>
>
> Works good for me!
>
> Thanks,
> Tyler
>> ---
>> drivers/acpi/apei/apei-internal.h | 5 -----
>> drivers/firmware/efi/cper.c | 12 ++----------
>> include/acpi/ghes.h | 5 +++++
>> 3 files changed, 7 insertions(+), 15 deletions(-)
>>
>> diff --git a/drivers/acpi/apei/apei-internal.h b/drivers/acpi/apei/apei-internal.h
>> index 6e9f14c0a71b..cb4126051f62 100644
>> --- a/drivers/acpi/apei/apei-internal.h
>> +++ b/drivers/acpi/apei/apei-internal.h
>> @@ -120,11 +120,6 @@ int apei_exec_collect_resources(struct apei_exec_context *ctx,
>> struct dentry;
>> struct dentry *apei_get_debugfs_dir(void);
>> -#define apei_estatus_for_each_section(estatus, section) \
>> - for (section = (struct acpi_hest_generic_data *)(estatus + 1); \
>> - (void *)section - (void *)estatus < estatus->data_length; \
>> - section = (void *)(section+1) + section->error_data_length)
>> -
>> static inline u32 cper_estatus_len(struct acpi_hest_generic_status *estatus)
>> {
>> if (estatus->raw_data_length)
>> diff --git a/drivers/firmware/efi/cper.c b/drivers/firmware/efi/cper.c
>> index 48a8f69da42a..bf3672a81e49 100644
>> --- a/drivers/firmware/efi/cper.c
>> +++ b/drivers/firmware/efi/cper.c
>> @@ -606,7 +606,6 @@ void cper_estatus_print(const char *pfx,
>> const struct acpi_hest_generic_status *estatus)
>> {
>> struct acpi_hest_generic_data *gdata;
>> - unsigned int data_len;
>> int sec_no = 0;
>> char newpfx[64];
>> __u16 severity;
>> @@ -617,14 +616,10 @@ void cper_estatus_print(const char *pfx,
>> "It has been corrected by h/w "
>> "and requires no further action");
>> printk("%s""event severity: %s\n", pfx, cper_severity_str(severity));
>> - data_len = estatus->data_length;
>> - gdata = (struct acpi_hest_generic_data *)(estatus + 1);
>> snprintf(newpfx, sizeof(newpfx), "%s%s", pfx, INDENT_SP);
>> - while (data_len >= acpi_hest_get_size(gdata)) {
>> + apei_estatus_for_each_section(estatus, gdata) {
>> cper_estatus_print_section(newpfx, gdata, sec_no);
>> - data_len -= acpi_hest_get_record_size(gdata);
>> - gdata = acpi_hest_get_next(gdata);
>> sec_no++;
>> }
>> }
>> @@ -653,15 +648,12 @@ int cper_estatus_check(const struct acpi_hest_generic_status *estatus)
>> if (rc)
>> return rc;
>> data_len = estatus->data_length;
>> - gdata = (struct acpi_hest_generic_data *)(estatus + 1);
>> - while (data_len >= acpi_hest_get_size(gdata)) {
>> + apei_estatus_for_each_section(estatus, gdata) {
>> gedata_len = acpi_hest_get_error_length(gdata);
>> if (gedata_len > data_len - acpi_hest_get_size(gdata))
>> return -EINVAL;
>> -
>> data_len -= acpi_hest_get_record_size(gdata);
>> - gdata = acpi_hest_get_next(gdata);
>> }
>> if (data_len)
>> return -EINVAL;
>> diff --git a/include/acpi/ghes.h b/include/acpi/ghes.h
>> index 9f26e01186ae..9061c5c743b3 100644
>> --- a/include/acpi/ghes.h
>> +++ b/include/acpi/ghes.h
>> @@ -113,6 +113,11 @@ static inline void *acpi_hest_get_next(struct acpi_hest_generic_data *gdata)
>> return (void *)(gdata) + acpi_hest_get_record_size(gdata);
>> }
>> +#define apei_estatus_for_each_section(estatus, section) \
>> + for (section = (struct acpi_hest_generic_data *)(estatus + 1); \
>> + (void *)section - (void *)(estatus + 1) < estatus->data_length; \
>> + section = acpi_hest_get_next(section))
>> +
>> int ghes_notify_sea(void);
>> #endif /* GHES_H */
>
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