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| author | Ronak Kanabar <ronak.kanabar@intel.com> | 2022-01-31 11:22:45 +0530 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2022-03-10 15:14:22 +0000 |
| commit | 40ca79714ad7d5f2aa201d83db4d97f21260d924 (patch) | |
| tree | c4533792fd071b8281781baf719f2a151b3b73ef /src | |
| parent | a4b821a9af333cf9ea639cbb70e40c602d531d67 (diff) | |
Revert "drivers/intel/fsp2_0: Allow `mp_startup_all_cpus()` to run serially"
This reverts commit 6af980a2aeca9b8cedfb3d7734389e6e36099c88.
BUG=b:199246420
Change-Id: Iddb7aa6d52b563485a496798f2fe31ed64b4f4a8
Signed-off-by: Ronak Kanabar <ronak.kanabar@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/61498
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Maulik V Vaghela <maulik.v.vaghela@intel.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/drivers/intel/fsp2_0/ppi/mp_service_ppi.c | 21 |
1 files changed, 4 insertions, 17 deletions
diff --git a/src/drivers/intel/fsp2_0/ppi/mp_service_ppi.c b/src/drivers/intel/fsp2_0/ppi/mp_service_ppi.c index 9aef1b6dce..50e35b0e8f 100644 --- a/src/drivers/intel/fsp2_0/ppi/mp_service_ppi.c +++ b/src/drivers/intel/fsp2_0/ppi/mp_service_ppi.c @@ -94,23 +94,10 @@ efi_return_status_t mp_startup_all_cpus(efi_ap_procedure procedure, /* Run on BSP */ procedure(argument); - /* - * Run on APs Serially - * - * FIXME: As per MP service specification, EDK2 is allowed to specify the mode - * in which a 'func' routine should be executed on APs (i.e. execute serially - * or concurrently). - * - * MP service API `StartupAllCPUs` doesn't specify such requirement. - * Hence, running the `CpuCacheInfoCollectCoreAndCacheData` - * (UefiCpuPkg/Library/CpuCacheInfoLib/CpuCacheInfoLib.c#194) - * simultaneously on APs results in a coherency issue (hang while executing `func`) - * due to lack of acquiring a spin lock while accessing common data structure in - * multiprocessor environment. - */ - if (mp_run_on_all_aps((void *)procedure, argument, timeout_usec, false) != - CB_SUCCESS) { - printk(BIOS_DEBUG, "%s: Exit with Failure\n", __func__); + /* Run on APs */ + if (mp_run_on_aps((void *)procedure, argument, + MP_RUN_ON_ALL_CPUS, timeout_usec) != CB_SUCCESS) { + printk(BIOS_ERR, "%s: Exit with Failure\n", __func__); return FSP_NOT_STARTED; } |