diff options
| author | David Woodhouse <dwmw@amazon.co.uk> | 2021-12-10 16:36:22 +0000 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-01-07 10:44:45 -0500 |
| commit | 1cfc9c4b9d4606a1e90e7dbc50058b9f0c1d43a6 (patch) | |
| tree | 1bfa5ca90e8aab707e92882cf3cbb5ab009f053c /arch/x86/include | |
| parent | 982ed0de4753ed6e71dbd40f82a5a066baf133ed (diff) | |
| download | linux-1cfc9c4b9d4606a1e90e7dbc50058b9f0c1d43a6.tar.gz | |
KVM: x86/xen: Maintain valid mapping of Xen shared_info page
Use the newly reinstated gfn_to_pfn_cache to maintain a kernel mapping
of the Xen shared_info page so that it can be accessed in atomic context.
Note that we do not participate in dirty tracking for the shared info
page and we do not explicitly mark it dirty every single tim we deliver
an event channel interrupts. We wouldn't want to do that even if we *did*
have a valid vCPU context with which to do so.
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Message-Id: <20211210163625.2886-4-dwmw2@infradead.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/kvm_host.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index ce622b89c5d8..6e61e11e750f 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -1020,7 +1020,7 @@ struct msr_bitmap_range { struct kvm_xen { bool long_mode; u8 upcall_vector; - gfn_t shinfo_gfn; + struct gfn_to_pfn_cache shinfo_cache; }; enum kvm_irqchip_mode { |