Re: [Part1 PATCH v7 13/17] x86/io: Unroll string I/O when SEV is active

2017-10-21 Thread Brijesh Singh
Hi Alan, On 10/20/17 1:39 PM, Alan Cox wrote: > On Fri, 20 Oct 2017 09:30:55 -0500 > Brijesh Singh wrote: > >> From: Tom Lendacky >> >> Secure Encrypted Virtualization (SEV) does not support string I/O, so >> unroll the string I/O operation into a loop operating on one element at >> a time. > D

Re: [Part1 PATCH v7 13/17] x86/io: Unroll string I/O when SEV is active

2017-10-20 Thread Alan Cox
On Fri, 20 Oct 2017 09:30:55 -0500 Brijesh Singh wrote: > From: Tom Lendacky > > Secure Encrypted Virtualization (SEV) does not support string I/O, so > unroll the string I/O operation into a loop operating on one element at > a time. Does this also mean that any firmware running in the virtua

[Part1 PATCH v7 13/17] x86/io: Unroll string I/O when SEV is active

2017-10-20 Thread Brijesh Singh
From: Tom Lendacky Secure Encrypted Virtualization (SEV) does not support string I/O, so unroll the string I/O operation into a loop operating on one element at a time. Signed-off-by: Tom Lendacky Signed-off-by: Brijesh Singh Reviewed-by: Borislav Petkov Tested-by: Borislav Petkov Cc: Thomas