Re: [PATCH v2] x86/msr: expose MSR_FAM10H_MMIO_CONF_BASE on AMD

2025-03-05 Thread Jan Beulich
On 03.03.2025 15:13, Roger Pau Monné wrote: > On Mon, Mar 03, 2025 at 01:41:15PM +, Andrew Cooper wrote: >> On 03/03/2025 9:19 am, Roger Pau Monne wrote: >>> The MMIO_CONF_BASE reports the base of the MCFG range on AMD systems. >>> Currently Linux is unconditionally attempting to read the MSR w

Re: [PATCH v2] x86/msr: expose MSR_FAM10H_MMIO_CONF_BASE on AMD

2025-03-05 Thread Jan Beulich
On 03.03.2025 10:19, Roger Pau Monne wrote: > The MMIO_CONF_BASE reports the base of the MCFG range on AMD systems. > Currently Linux is unconditionally attempting to read the MSR without a > safe MSR accessor, and since Xen doesn't allow access to it Linux reports > the following error: > > unche

Re: [PATCH v2] x86/msr: expose MSR_FAM10H_MMIO_CONF_BASE on AMD

2025-03-03 Thread Roger Pau Monné
On Mon, Mar 03, 2025 at 01:41:15PM +, Andrew Cooper wrote: > On 03/03/2025 9:19 am, Roger Pau Monne wrote: > > The MMIO_CONF_BASE reports the base of the MCFG range on AMD systems. > > Currently Linux is unconditionally attempting to read the MSR without a > > safe MSR accessor, and since Xen d

Re: [PATCH v2] x86/msr: expose MSR_FAM10H_MMIO_CONF_BASE on AMD

2025-03-03 Thread Andrew Cooper
On 03/03/2025 9:19 am, Roger Pau Monne wrote: > The MMIO_CONF_BASE reports the base of the MCFG range on AMD systems. > Currently Linux is unconditionally attempting to read the MSR without a > safe MSR accessor, and since Xen doesn't allow access to it Linux reports > the following error: > > unch

[PATCH v2] x86/msr: expose MSR_FAM10H_MMIO_CONF_BASE on AMD

2025-03-03 Thread Roger Pau Monne
The MMIO_CONF_BASE reports the base of the MCFG range on AMD systems. Currently Linux is unconditionally attempting to read the MSR without a safe MSR accessor, and since Xen doesn't allow access to it Linux reports the following error: unchecked MSR access error: RDMSR from 0xc0010058 at rIP: 0xf