[
{
"EventCode": "0xE8",
"Counter": "0,1,2,3",
"UMask": "0x1",
"EventName": "BPU_CLEARS.EARLY",
"SampleAfterValue": "2000000",
"BriefDescription": "Early Branch Prediciton Unit clears"
},
{
"EventCode": "0xE8",
"Counter": "0,1,2,3",
"UMask": "0x2",
"EventName": "BPU_CLEARS.LATE",
"SampleAfterValue": "2000000",
"BriefDescription": "Late Branch Prediction Unit clears"
},
{
"EventCode": "0xE5",
"Counter": "0,1,2,3",
"UMask": "0x1",
"EventName": "BPU_MISSED_CALL_RET",
"SampleAfterValue": "2000000",
"BriefDescription": "Branch prediction unit missed call or return"
},
{
"EventCode": "0xD5",
"Counter": "0,1,2,3",
"UMask": "0x1",
"EventName": "ES_REG_RENAMES",
"SampleAfterValue": "2000000",
"BriefDescription": "ES segment renames"
},
{
"EventCode": "0x6C",
"Counter": "0,1,2,3",
"UMask": "0x1",
"EventName": "IO_TRANSACTIONS",
"SampleAfterValue": "2000000",
"BriefDescription": "I/O transactions"
},
{
"EventCode": "0x80",
"Counter": "0,1,2,3",
"UMask": "0x4",
"EventName": "L1I.CYCLES_STALLED",
"SampleAfterValue": "2000000",
"BriefDescription": "L1I instruction fetch stall cycles"
},
{
"EventCode": "0x80",
"Counter": "0,1,2,3",
"UMask": "0x1",
"EventName": "L1I.HITS",
"SampleAfterValue": "2000000",
"BriefDescription": "L1I instruction fetch hits"
},
{
"EventCode": "0x80",
"Counter": "0,1,2,3",
"UMask": "0x2",
"EventName": "L1I.MISSES",
"SampleAfterValue": "2000000",
"BriefDescription": "L1I instruction fetch misses"
},
{
"EventCode": "0x80",
"Counter": "0,1,2,3",
"UMask": "0x3",
"EventName": "L1I.READS",
"SampleAfterValue": "2000000",
"BriefDescription": "L1I Instruction fetches"
},
{
"EventCode": "0x82",
"Counter": "0,1,2,3",
"UMask": "0x1",
"EventName": "LARGE_ITLB.HIT",
"SampleAfterValue": "200000",
"BriefDescription": "Large ITLB hit"
},
{
"EventCode": "0x13",
"Counter": "0,1,2,3",
"UMask": "0x7",
"EventName": "LOAD_DISPATCH.ANY",
"SampleAfterValue": "2000000",
"BriefDescription": "All loads dispatched"
},
{
"EventCode": "0x13",
"Counter": "0,1,2,3",
"UMask": "0x4",
"EventName": "LOAD_DISPATCH.MOB",
"SampleAfterValue": "2000000",
"BriefDescription": "Loads dispatched from the MOB"
},
{
"EventCode": "0x13",
"Counter": "0,1,2,3",
"UMask": "0x1",
"EventName": "LOAD_DISPATCH.RS",
"SampleAfterValue": "2000000",
"BriefDescription": "Loads dispatched that bypass the MOB"
},
{
"EventCode": "0x13",
"Counter": "0,1,2,3",
"UMask": "0x2",
"EventName": "LOAD_DISPATCH.RS_DELAYED",
"SampleAfterValue": "2000000",
"BriefDescription": "Loads dispatched from stage 305"
},
{
"EventCode": "0x7",
"Counter": "0,1,2,3",
"UMask": "0x1",
"EventName": "PARTIAL_ADDRESS_ALIAS",
"SampleAfterValue": "200000",
"BriefDescription": "False dependencies due to partial address aliasing"
},
{
"EventCode": "0xD2",
"Counter": "0,1,2,3",
"UMask": "0xf",
"EventName": "RAT_STALLS.ANY",
"SampleAfterValue": "2000000",
"BriefDescription": "All RAT stall cycles"
},
{
"EventCode": "0xD2",
"Counter": "0,1,2,3",
"UMask": "0x1",
"EventName": "RAT_STALLS.FLAGS",
"SampleAfterValue": "2000000",
"BriefDescription": "Flag stall cycles"
},
{
"EventCode": "0xD2",
"Counter": "0,1,2,3",
"UMask": "0x2",
"EventName": "RAT_STALLS.REGISTERS",
"SampleAfterValue": "2000000",
"BriefDescription": "Partial register stall cycles"
},
{
"EventCode": "0xD2",
"Counter": "0,1,2,3",
"UMask": "0x4",
"EventName": "RAT_STALLS.ROB_READ_PORT",
"SampleAfterValue": "2000000",
"BriefDescription": "ROB read port stalls cycles"
},
{
"EventCode": "0xD2",
"Counter": "0,1,2,3",
"UMask": "0x8",
"EventName": "RAT_STALLS.SCOREBOARD",
"SampleAfterValue": "2000000",
"BriefDescription": "Scoreboard stall cycles"
},
{
"EventCode": "0x4",
"Counter": "0,1,2,3",
"UMask": "0x7",
"EventName": "SB_DRAIN.ANY",
"SampleAfterValue": "200000",
"BriefDescription": "All Store buffer stall cycles"
},
{
"EventCode": "0xD4",
"Counter": "0,1,2,3",
"UMask": "0x1",
"EventName": "SEG_RENAME_STALLS",
"SampleAfterValue": "2000000",
"BriefDescription": "Segment rename stall cycles"
},
{
"EventCode": "0xB8",
"Counter": "0,1,2,3",
"UMask": "0x1",
"EventName": "SNOOP_RESPONSE.HIT",
"SampleAfterValue": "100000",
"BriefDescription": "Thread responded HIT to snoop"
},
{
"EventCode": "0xB8",
"Counter": "0,1,2,3",
"UMask": "0x2",
"EventName": "SNOOP_RESPONSE.HITE",
"SampleAfterValue": "100000",
"BriefDescription": "Thread responded HITE to snoop"
},
{
"EventCode": "0xB8",
"Counter": "0,1,2,3",
"UMask": "0x4",
"EventName": "SNOOP_RESPONSE.HITM",
"SampleAfterValue": "100000",
"BriefDescription": "Thread responded HITM to snoop"
},
{
"EventCode": "0xF6",
"Counter": "0,1,2,3",
"UMask": "0x1",
"EventName": "SQ_FULL_STALL_CYCLES",
"SampleAfterValue": "2000000",
"BriefDescription": "Super Queue full stall cycles"
}
] FDT code, but
inadvertently created an issue with such firmware, by moving some
of the FDT manipulation to after the invocation of ExitBootServices().
Given that the stub's libfdt implementation uses the ordinary, accelerated
string functions, which rely on hardware handling of unaligned accesses,
manipulating the FDT with the MMU off may result in alignment faults.
So fix the situation by moving the update_fdt_memmap() call into the
callback function invoked by efi_exit_boot_services() right before it
calls the ExitBootServices() UEFI service (which is arguably a better
place for it anyway)
Note that disabling the MMU in ExitBootServices() is not compliant with
the UEFI spec, and carries great risk due to the fact that switching from
cached to uncached memory accesses halfway through compiler generated code
(i.e., involving a stack) can never be done in a way that is architecturally
safe.
Fixes: abfb7b686a3e ("efi/libstub/arm*: Pass latest memory map to the kernel")
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Tested-by: Riku Voipio <riku.voipio@linaro.org>
Cc: <stable@vger.kernel.org>
Cc: mark.rutland@arm.com
Cc: linux-efi@vger.kernel.org
Cc: matt@codeblueprint.co.uk
Cc: leif.lindholm@linaro.org
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/1485971102-23330-2-git-send-email-ard.biesheuvel@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>