diff options
Diffstat (limited to 'include/user/guest-host.h')
| -rw-r--r-- | include/user/guest-host.h | 49 |
1 files changed, 19 insertions, 30 deletions
diff --git a/include/user/guest-host.h b/include/user/guest-host.h index 8d2079bbbb..8f7ef75896 100644 --- a/include/user/guest-host.h +++ b/include/user/guest-host.h @@ -8,9 +8,9 @@ #ifndef USER_GUEST_HOST_H #define USER_GUEST_HOST_H -#include "user/abitypes.h" +#include "exec/vaddr.h" #include "user/guest-base.h" -#include "cpu.h" +#include "accel/tcg/cpu-ops.h" /* * If non-zero, the guest virtual address space is a contiguous subset @@ -23,59 +23,48 @@ extern unsigned long reserved_va; /* - * Limit the guest addresses as best we can. - * - * When not using -R reserved_va, we cannot really limit the guest - * to less address space than the host. For 32-bit guests, this - * acts as a sanity check that we're not giving the guest an address - * that it cannot even represent. For 64-bit guests... the address - * might not be what the real kernel would give, but it is at least - * representable in the guest. - * - * TODO: Improve address allocation to avoid this problem, and to - * avoid setting bits at the top of guest addresses that might need - * to be used for tags. + * The last byte of the guest address space. + * If reserved_va is non-zero, guest_addr_max matches. + * If reserved_va is zero, guest_addr_max equals the full guest space. */ -#define GUEST_ADDR_MAX_ \ - ((MIN_CONST(TARGET_VIRT_ADDR_SPACE_BITS, TARGET_ABI_BITS) <= 32) ? \ - UINT32_MAX : ~0ul) -#define GUEST_ADDR_MAX (reserved_va ? : GUEST_ADDR_MAX_) +extern unsigned long guest_addr_max; -#ifndef TARGET_TAGGED_ADDRESSES -static inline abi_ptr cpu_untagged_addr(CPUState *cs, abi_ptr x) +static inline vaddr cpu_untagged_addr(CPUState *cs, vaddr x) { + const TCGCPUOps *tcg_ops = cs->cc->tcg_ops; + if (tcg_ops->untagged_addr) { + return tcg_ops->untagged_addr(cs, x); + } return x; } -#endif /* All direct uses of g2h and h2g need to go away for usermode softmmu. */ -static inline void *g2h_untagged(abi_ptr x) +static inline void *g2h_untagged(vaddr x) { return (void *)((uintptr_t)(x) + guest_base); } -static inline void *g2h(CPUState *cs, abi_ptr x) +static inline void *g2h(CPUState *cs, vaddr x) { return g2h_untagged(cpu_untagged_addr(cs, x)); } -static inline bool guest_addr_valid_untagged(abi_ulong x) +static inline bool guest_addr_valid_untagged(vaddr x) { - return x <= GUEST_ADDR_MAX; + return x <= guest_addr_max; } -static inline bool guest_range_valid_untagged(abi_ulong start, abi_ulong len) +static inline bool guest_range_valid_untagged(vaddr start, vaddr len) { - return len - 1 <= GUEST_ADDR_MAX && start <= GUEST_ADDR_MAX - len + 1; + return len - 1 <= guest_addr_max && start <= guest_addr_max - len + 1; } #define h2g_valid(x) \ - (HOST_LONG_BITS <= TARGET_VIRT_ADDR_SPACE_BITS || \ - (uintptr_t)(x) - guest_base <= GUEST_ADDR_MAX) + ((uintptr_t)(x) - guest_base <= guest_addr_max) #define h2g_nocheck(x) ({ \ uintptr_t __ret = (uintptr_t)(x) - guest_base; \ - (abi_ptr)__ret; \ + (vaddr)__ret; \ }) #define h2g(x) ({ \ |