Re: [PATCH v3 2/8] x86/svm: silently drop writes to SYSCFG and related MSRs

2020-09-04 Thread Andrew Cooper
On 04/09/2020 09:36, Jan Beulich wrote: > On 01.09.2020 12:54, Roger Pau Monne wrote: >> The SYSCFG, TOP_MEM1 and TOP_MEM2 MSRs are currently exposed to guests >> and writes are silently discarded. Make this explicit in the SVM code >> now, and just return default constant values when attempting to

Re: [PATCH v3 2/8] x86/svm: silently drop writes to SYSCFG and related MSRs

2020-09-04 Thread Jan Beulich
On 01.09.2020 12:54, Roger Pau Monne wrote: > The SYSCFG, TOP_MEM1 and TOP_MEM2 MSRs are currently exposed to guests > and writes are silently discarded. Make this explicit in the SVM code > now, and just return default constant values when attempting to read > any of the MSRs, while continuing to

[PATCH v3 2/8] x86/svm: silently drop writes to SYSCFG and related MSRs

2020-09-01 Thread Roger Pau Monne
The SYSCFG, TOP_MEM1 and TOP_MEM2 MSRs are currently exposed to guests and writes are silently discarded. Make this explicit in the SVM code now, and just return default constant values when attempting to read any of the MSRs, while continuing to silently drop writes. Signed-off-by: Roger Pau Monn