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KVM: x86/xen: add support for 32-bit guests in SCHEDOP_poll
authorMetin Kaya <metikaya@amazon.com>
Mon, 21 Mar 2022 11:05:32 +0000 (11:05 +0000)
committerDavid Woodhouse <dwmw@amazon.co.uk>
Wed, 30 Nov 2022 19:24:56 +0000 (19:24 +0000)
commit214b0a88c46d5f32d80abe0d1bc2eea1cbd38f11
treed8a88db46573406a8be2a144e38f000eb2e6bce5tree | snapshot
parentdf0bb47baa95aad133820b149851d5b94cbc6790commit | diff
KVM: x86/xen: add support for 32-bit guests in SCHEDOP_poll

This patch introduces compat version of struct sched_poll for
SCHEDOP_poll sub-operation of sched_op hypercall, reads correct amount
of data (16 bytes in 32-bit case, 24 bytes otherwise) by using new
compat_sched_poll struct, copies it to sched_poll properly, and lets
rest of the code run as is.

Signed-off-by: Metin Kaya <metikaya@amazon.com>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
arch/x86/kvm/xen.c diff | blob | history
arch/x86/kvm/xen.h diff | blob | history
Domain: System / Kernel;