From: Thomas Huth <thuth@redhat.com>
To: qemu-ppc@nongnu.org, david@gibson.dropbear.id.au
Cc: qemu-devel@nongnu.org
Subject: [Qemu-devel] [PATCH v2 0/4] hw/ppc/spapr: Add "Processor Register Hypervisor Resource Access" H-calls
Date: Thu, 11 Feb 2016 13:47:17 +0100 [thread overview]
Message-ID: <1455194841-4283-1-git-send-email-thuth@redhat.com> (raw)
While we were recently debugging a problem with the H_SET_DABR
call [1], I noticed that some hypercalls from the chapter 14.5.4.3
("Processor Register Hypervisor Resource Access") from the LoPAPR
spec [2] are still missing in QEMU.
So here's are some patches that implement these hypercalls. Linux
apparently does not depend on these hypercalls yet (otherwise somebody
would have noticed this earlier), but the hypercalls are rather simple,
so I think the implementations are quite straight-forward and easy to
read.
v2:
- Don't use set_spr() and set cpu->env.spr[] directly instead
- Completely reworked the H_PAGE_INIT patch to map the source
and target pages for higher speed, and to be able to flush now
the caches if requested.
[1] http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=760a7364f27d974d
[2] https://members.openpowerfoundation.org/document/dl/469
Thomas Huth (4):
hw/ppc/spapr: Add h_set_sprg0 hypercall
hw/ppc/spapr: Implement h_set_dabr
hw/ppc/spapr: Implement the h_set_xdabr hypercall
hw/ppc/spapr: Implement the h_page_init hypercall
hw/ppc/spapr_hcall.c | 132 ++++++++++++++++++++++++++++++++++++++++++++++++---
target-ppc/kvm_ppc.h | 24 +++++++++-
2 files changed, 147 insertions(+), 9 deletions(-)
--
1.8.3.1
next reply other threads:[~2016-02-11 12:47 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-11 12:47 Thomas Huth [this message]
2016-02-11 12:47 ` [Qemu-devel] [PATCH v2 1/4] hw/ppc/spapr: Add h_set_sprg0 hypercall Thomas Huth
2016-02-11 12:47 ` [Qemu-devel] [PATCH v2 2/4] hw/ppc/spapr: Implement h_set_dabr Thomas Huth
2016-02-11 12:47 ` [Qemu-devel] [PATCH v2 3/4] hw/ppc/spapr: Implement the h_set_xdabr hypercall Thomas Huth
2016-02-11 12:47 ` [Qemu-devel] [PATCH v2 4/4] hw/ppc/spapr: Implement the h_page_init hypercall Thomas Huth
2016-02-12 0:43 ` David Gibson
2016-02-12 0:31 ` [Qemu-devel] [PATCH v2 0/4] hw/ppc/spapr: Add "Processor Register Hypervisor Resource Access" H-calls David Gibson
2016-02-15 10:37 ` Thomas Huth
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