Date: Sat, 4 Aug 2018 21:18:58 +0200 From: Emmanuel Vadot <manu@bidouilliste.com> To: Ian Lepore <ian@freebsd.org> Cc: Konstantin Belousov <kostikbel@gmail.com>, Kyle Evans <kevans@freebsd.org>, freebsd-current Current <freebsd-current@freebsd.org>, Eitan Adler <eadler@freebsd.org> Subject: Re: panic: mutex pmap not owned at ... efirt_machdep.c:255 Message-ID: <20180804211858.e7ea14c07b239cacf06ef248@bidouilliste.com> In-Reply-To: <1533397631.9860.14.camel@freebsd.org> References: <CAF6rxg=4OnHEJa1OnJerMeEKD66nZg3j-H-XZ-9YAA1TE_NoDQ@mail.gmail.com> <CACNAnaFv9Gj%2BM2Gb8FbwY5q56dnTR6OgjZ5qth9gjr8LreHeow@mail.gmail.com> <20180804083720.GJ6049@kib.kiev.ua> <CACNAnaGZJxm=_oM_f0xinUe2NZ=tZn3w%2BnLTE62_r9EAm0UuTA@mail.gmail.com> <20180804131352.GL6049@kib.kiev.ua> <CACNAnaFUto6gSaDx3vrgnSykRfBhV_Mgx4OLaXJgENvgqjgSHg@mail.gmail.com> <1533394281.9860.5.camel@freebsd.org> <CACNAnaF9vqxrKsOUDTjMhHOyTX==0irDbrHrmLbHUZ_kqH1MSg@mail.gmail.com> <20180804152225.GP6049@kib.kiev.ua> <1533396347.9860.11.camel@freebsd.org> <20180804154327.GQ6049@kib.kiev.ua> <1533397631.9860.14.camel@freebsd.org>
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On Sat, 04 Aug 2018 09:47:11 -0600 Ian Lepore <ian@freebsd.org> wrote: > On Sat, 2018-08-04 at 18:43 +0300, Konstantin Belousov wrote: > > On Sat, Aug 04, 2018 at 09:25:47AM -0600, Ian Lepore wrote: > > >=20 > > > On Sat, 2018-08-04 at 18:22 +0300, Konstantin Belousov wrote: > > > >=20 > > > > On Sat, Aug 04, 2018 at 09:58:43AM -0500, Kyle Evans wrote: > > > > >=20 > > > > >=20 > > > > > On Sat, Aug 4, 2018 at 9:51 AM, Ian Lepore <ian@freebsd.org> wrot= e: > > > > > >=20 > > > > > >=20 > > > > > >=20 > [...] > > > > > > What do we do on 32-bit arm that has no dmap but may have efi > > > > > > runtime > > > > > > support? > > > > > >=20 > > > > > This should probably just be compiled out for !arm64 && !x86 - its > > > > > sole purpose was to compensate for outdated loader.efi that hasn't > > > > > done the SetVirtualAddressMap. EFI on 32-bit ARM is "new" enough > > > > > that > > > > > it shouldn't have this problem. > > > > Does EFI on 32bit arm have RT support ? > > > I suspect the uboot implementation doesn't, but I can't think of any > > > reason why other implementations are not possible/available. In > > > particular, even 32bit arm supports virtualization and such an > > > environment could provide rt support. > > No, I mean, does our kernel has RT support on armv7 ?=A0=A0I only imple= mented > > necessary VM tricks for amd64, then it was ported to arm64, and in both > > cases it relies on 64bit address space and specific location of the KVA. >=20 > I didn't realize the kernel implementation was arch-specific. So I > guess this comes under the category of "we'll solve that problem when > something comes along that provides efi rt for arm32." U-Boot doesn't provide a runtime service, I never tested the available port of EDK2 for BBB or RPI, I guess they boot the kernel in HYP/non-secure mode and install an runtime in secure world along with some psci firmware. --=20 Emmanuel Vadot <manu@bidouilliste.com> <manu@freebsd.org>
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