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hv: vpci: add PCI BAR re-program address check

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In theory, guest could re-program PCI BAR address to any address. However, ACRN
hypervisor only support [0, top_address_space) EPT memory mapping. So we need to
check whether the PCI BAR re-program address is within this scope.

Tracked-On: #3475
Signed-off-by: Li, Fei1 <fei1.li@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Li, Fei1
2019-10-14 23:26:57 +08:00
committed by wenlingz
parent dab14856c2
commit dc1e2adaec
4 changed files with 37 additions and 11 deletions
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11
hypervisor/include/arch/x86/guest/ept.h
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@@ -18,6 +18,17 @@ typedef void (*pge_handler)(uint64_t *pgentry, uint64_t size);
#define INVALID_HPA (0x1UL << 52U)
#define INVALID_GPA (0x1UL << 52U)
/* External Interfaces */
/**
* @brief Check guest-physical memory region mapping valid
*
* @param[in] vm the pointer that points to VM data structure
* @param[in] base The specified start guest physical address of guest
* physical memory region
* @param[in] size The size of guest physical memory region
*
* @retval true if the guest-physical memory region mapping valid, false otherwise.
*/
bool ept_is_mr_valid(const struct acrn_vm *vm, uint64_t base, uint64_t size);
/**
* @brief EPT page tables destroy
*