Re: [PATCH] powerpc/xive: discard ESB load value when interrupt is invalid

2020-01-16 Thread Cédric Le Goater
>> You might want to use 'git tag --contains': >> >> [greg@bahia kernel-linus]$ git tag --contains da15c03b047d >> for-linus >> kvm-5.4-2 >> next-20191118 >> next-20191126 >> tags/kvm-5.4-1 >> tags/kvm-5.4-2 >> v5.4 >> v5.4-rc1 > > Or: > > $ git describe --match "v[0-9]*" --contains

Re: [PATCH] powerpc/xive: discard ESB load value when interrupt is invalid

2020-01-15 Thread Michael Ellerman
Greg Kurz writes: > On Tue, 14 Jan 2020 08:44:54 +0100 > Cédric Le Goater wrote: >> On 1/14/20 2:14 AM, Michael Ellerman wrote: >> > Cédric Le Goater writes: >> >> On 1/13/20 2:01 PM, Cédric Le Goater wrote: >> >>> From: Frederic Barrat >> >>> >> >>> A load on an ESB page returning all 1's

Re: [PATCH] powerpc/xive: discard ESB load value when interrupt is invalid

2020-01-14 Thread Greg Kurz
On Tue, 14 Jan 2020 08:44:54 +0100 Cédric Le Goater wrote: > On 1/14/20 2:14 AM, Michael Ellerman wrote: > > Cédric Le Goater writes: > >> On 1/13/20 2:01 PM, Cédric Le Goater wrote: > >>> From: Frederic Barrat > >>> > >>> A load on an ESB page returning all 1's means that the underlying > >>>

Re: [PATCH] powerpc/xive: discard ESB load value when interrupt is invalid

2020-01-14 Thread Cédric Le Goater
On 1/14/20 2:14 AM, Michael Ellerman wrote: > Cédric Le Goater writes: >> On 1/13/20 2:01 PM, Cédric Le Goater wrote: >>> From: Frederic Barrat >>> >>> A load on an ESB page returning all 1's means that the underlying >>> device has invalidated the access to the PQ state of the interrupt >>>

Re: [PATCH] powerpc/xive: discard ESB load value when interrupt is invalid

2020-01-13 Thread Michael Ellerman
Cédric Le Goater writes: > On 1/13/20 2:01 PM, Cédric Le Goater wrote: >> From: Frederic Barrat >> >> A load on an ESB page returning all 1's means that the underlying >> device has invalidated the access to the PQ state of the interrupt >> through mmio. It may happen, for example when querying

[PATCH] powerpc/xive: discard ESB load value when interrupt is invalid

2020-01-13 Thread Cédric Le Goater
From: Frederic Barrat A load on an ESB page returning all 1's means that the underlying device has invalidated the access to the PQ state of the interrupt through mmio. It may happen, for example when querying a PHB interrupt while the PHB is in an error state. In that case, we should consider

Re: [PATCH] powerpc/xive: discard ESB load value when interrupt is invalid

2020-01-13 Thread Cédric Le Goater
On 1/13/20 2:01 PM, Cédric Le Goater wrote: > From: Frederic Barrat > > A load on an ESB page returning all 1's means that the underlying > device has invalidated the access to the PQ state of the interrupt > through mmio. It may happen, for example when querying a PHB interrupt > while the PHB