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target/i386: SEV: store pointer to decoded id_block in SevSnpGuest

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Do not rely on finish->id_block_uaddr, so that there are no casts from
pointer to uint64_t.  They break on 32-bit hosts.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2024-06-26 19:05:21 +02:00
parent 68c3aa3e97
commit dd1b2fb554
1 changed files with 6 additions and 5 deletions
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11
target/i386/sev.c
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@ -153,6 +153,7 @@ struct SevSnpGuestState {
/* configuration parameters */
char *guest_visible_workarounds;
char *id_block_base64;
uint8_t *id_block;
char *id_auth;
char *host_data;
@ -2170,16 +2171,15 @@ sev_snp_guest_set_id_block(Object *obj, const char *value, Error **errp)
gsize len;
finish->id_block_en = 0;
g_free(sev_snp_guest->id_block);
g_free(sev_snp_guest->id_block_base64);
g_free((guchar *)finish->id_block_uaddr);
/* store the base64 str so we don't need to re-encode in getter */
sev_snp_guest->id_block_base64 = g_strdup(value);
sev_snp_guest->id_block =
qbase64_decode(sev_snp_guest->id_block_base64, -1, &len, errp);
finish->id_block_uaddr =
(uint64_t)qbase64_decode(sev_snp_guest->id_block_base64, -1, &len, errp);
if (!finish->id_block_uaddr) {
if (!sev_snp_guest->id_block) {
return;
}
@ -2190,6 +2190,7 @@ sev_snp_guest_set_id_block(Object *obj, const char *value, Error **errp)
}
finish->id_block_en = 1;
finish->id_block_uaddr = (uintptr_t)sev_snp_guest->id_block;
}
static char *