tjh.dev / kernel
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x86/PVH: Use boot params to pass RSDP address in start_info page

After commit e6e094e053af75 ("x86/acpi, x86/boot: Take RSDP address from
boot params if available"), the RSDP address can be passed in boot
params. Therefore, store the RSDP address in start_info page into boot
params in the PVH entry instead of registering a different callback.
This removes an absolute reference during the PVH entry and is more
standardized.

Signed-off-by: Hou Wenlong <houwenlong.hwl@antgroup.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Message-ID: <76675c4d49d3a8f72252076812ef8f22276230c2.1772282441.git.houwenlong.hwl@antgroup.com>

authored by

Hou Wenlong and committed by
Juergen Gross 7271cb98 b8c460a0

+1 -6
+1 -6
arch/x86/platform/pvh/enlighten.c
··· 25 25 26 26 const unsigned int __initconst pvh_start_info_sz = sizeof(pvh_start_info); 27 27 28 - static u64 __init pvh_get_root_pointer(void) 29 - { 30 - return pvh_start_info.rsdp_paddr; 31 - } 32 - 33 28 /* 34 29 * Xen guests are able to obtain the memory map from the hypervisor via the 35 30 * HYPERVISOR_memory_op hypercall. ··· 90 95 pvh_bootparams.hdr.version = (2 << 8) | 12; 91 96 pvh_bootparams.hdr.type_of_loader = ((xen_guest ? 0x9 : 0xb) << 4) | 0; 92 97 93 - x86_init.acpi.get_root_pointer = pvh_get_root_pointer; 98 + pvh_bootparams.acpi_rsdp_addr = pvh_start_info.rsdp_paddr; 94 99 } 95 100 96 101 /*