[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v5 03/13] x86: move do_set_trap_table to pv/callback.c
That hypercall is used to set guest callbacks for traps. Signed-off-by: Wei Liu <wei.liu2@xxxxxxxxxx> --- xen/arch/x86/pv/callback.c | 50 ++++++++++++++++++++++++++++++++++++++++++++++ xen/arch/x86/traps.c | 50 ---------------------------------------------- 2 files changed, 50 insertions(+), 50 deletions(-) diff --git a/xen/arch/x86/pv/callback.c b/xen/arch/x86/pv/callback.c index d811f48110..0d7641df43 100644 --- a/xen/arch/x86/pv/callback.c +++ b/xen/arch/x86/pv/callback.c @@ -16,6 +16,7 @@ * License along with this program; If not, see <http://www.gnu.org/licenses/>. */ +#include <xen/event.h> #include <xen/guest_access.h> #include <xen/lib.h> #include <xen/sched.h> @@ -314,6 +315,55 @@ long compat_set_callbacks(unsigned long event_selector, return 0; } +long do_set_trap_table(XEN_GUEST_HANDLE_PARAM(const_trap_info_t) traps) +{ + struct trap_info cur; + struct vcpu *curr = current; + struct trap_info *dst = curr->arch.pv_vcpu.trap_ctxt; + long rc = 0; + + /* If no table is presented then clear the entire virtual IDT. */ + if ( guest_handle_is_null(traps) ) + { + memset(dst, 0, NR_VECTORS * sizeof(*dst)); + init_int80_direct_trap(curr); + return 0; + } + + for ( ; ; ) + { + if ( copy_from_guest(&cur, traps, 1) ) + { + rc = -EFAULT; + break; + } + + if ( cur.address == 0 ) + break; + + if ( !is_canonical_address(cur.address) ) + return -EINVAL; + + fixup_guest_code_selector(curr->domain, cur.cs); + + memcpy(&dst[cur.vector], &cur, sizeof(cur)); + + if ( cur.vector == 0x80 ) + init_int80_direct_trap(curr); + + guest_handle_add_offset(traps, 1); + + if ( hypercall_preempt_check() ) + { + rc = hypercall_create_continuation( + __HYPERVISOR_set_trap_table, "h", traps); + break; + } + } + + return rc; +} + /* * Local variables: * mode: C diff --git a/xen/arch/x86/traps.c b/xen/arch/x86/traps.c index 8caa9255ed..c43f3f1095 100644 --- a/xen/arch/x86/traps.c +++ b/xen/arch/x86/traps.c @@ -2073,56 +2073,6 @@ int send_guest_trap(struct domain *d, uint16_t vcpuid, unsigned int trap_nr) return -EIO; } - -long do_set_trap_table(XEN_GUEST_HANDLE_PARAM(const_trap_info_t) traps) -{ - struct trap_info cur; - struct vcpu *curr = current; - struct trap_info *dst = curr->arch.pv_vcpu.trap_ctxt; - long rc = 0; - - /* If no table is presented then clear the entire virtual IDT. */ - if ( guest_handle_is_null(traps) ) - { - memset(dst, 0, NR_VECTORS * sizeof(*dst)); - init_int80_direct_trap(curr); - return 0; - } - - for ( ; ; ) - { - if ( copy_from_guest(&cur, traps, 1) ) - { - rc = -EFAULT; - break; - } - - if ( cur.address == 0 ) - break; - - if ( !is_canonical_address(cur.address) ) - return -EINVAL; - - fixup_guest_code_selector(curr->domain, cur.cs); - - memcpy(&dst[cur.vector], &cur, sizeof(cur)); - - if ( cur.vector == 0x80 ) - init_int80_direct_trap(curr); - - guest_handle_add_offset(traps, 1); - - if ( hypercall_preempt_check() ) - { - rc = hypercall_create_continuation( - __HYPERVISOR_set_trap_table, "h", traps); - break; - } - } - - return rc; -} - void activate_debugregs(const struct vcpu *curr) { ASSERT(curr == current); -- 2.11.0 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx https://lists.xen.org/xen-devel
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