Re: [PATCH v2 2/2] s390: mm: Fix secure storage access exception handling

2021-01-22 Thread Claudio Imbrenda
On Thu, 21 Jan 2021 10:14:35 -0500 Janosch Frank wrote: > Turns out that the bit 61 in the TEID is not always 1 and if that's > the case the address space ID and the address are > unpredictable. Without an address and its address space ID we can't > export memory and hence we can only send a SIGS

Re: [PATCH v2 2/2] s390: mm: Fix secure storage access exception handling

2021-01-21 Thread Christian Borntraeger
On 21.01.21 16:14, Janosch Frank wrote: > Turns out that the bit 61 in the TEID is not always 1 and if that's > the case the address space ID and the address are > unpredictable. Without an address and its address space ID we can't > export memory and hence we can only send a SIGSEGV to the proce

[PATCH v2 2/2] s390: mm: Fix secure storage access exception handling

2021-01-21 Thread Janosch Frank
Turns out that the bit 61 in the TEID is not always 1 and if that's the case the address space ID and the address are unpredictable. Without an address and its address space ID we can't export memory and hence we can only send a SIGSEGV to the process or panic the kernel depending on who caused the