Description: powerpc/tm: Fix FP/VMX unavailable exceptions inside a transaction
References:
Notes:
 carnil> Commit fixes f48e91e87e67 ("powerpc/tm: Fix FP and VMX register
 carnil> corruption") but that commit was backported as well to older
 carnil> versions than 4.12, so the CC to stable@v.k.o does not seem
 carnil> completely correct. It was included as well in 4.9.30.
 carnil> Fix can be defered to point release when updating to new
 carnil> upstream stable versions as we disable
 carnil> CONFIG_PPC_TRANSACTIONAL_MEM since 5.2.6-1 (sid), 4.19.67-2
 carnil> (buster) and 4.9.184-1 (stretch).
Bugs:
upstream: released (5.3-rc8) [8205d5d98ef7f155de211f5e2eb6ca03d95a5a60]
4.19-upstream-stable: released (4.19.73) [47a0f70d7d9ac3d6b1a96b312d07bc67af3834e9]
4.9-upstream-stable: released (4.9.193) [acdf558ef62ceb71938d87f5b700b7ecc0bbee90]
3.16-upstream-stable: N/A "Vulnerable code not present"
sid: released (5.2.17-1)
4.19-buster-security: released (4.19.87-1)
4.9-stretch-security: released (4.9.210-1)
3.16-jessie-security: N/A "Vulnerable code not present"